DE10256220B4 - Method and device for carrying out a deformation compensation of end-position valve flaps in air conditioning devices - Google Patents

Abstract

Method for carrying out a deformation compensation of end valves located in air conditioning devices, wherein the valve flap (1) with an existing within an elastic overall system actuator (2) with a drive shaft (5) provided with incremental positioning movements, in communication and between two of the end positions A ₀ , B ₀ associated with stops (3, 4) is moved,
characterized in that
a) the achievement of an angular displacement α in the final position A _v , B _{v of} the drive shaft (5) to the in the end position A ₀ , B ₀ on the stop (3, 4) located and deformed valve flap (1) is detected, wherein the angular displacement α occurs by the loading deformation of the elastic overall system including the valve flap (1) by the action of a torque M of the drive shaft (5),
b) within the angular displacement α, an age-related change in the deformation of the elastic overall system including the valve flap is taken into account by a programmed age compensation,
c) upon reaching the angular offset end position A _v , B _{v of} the drive shaft (5) and after the standstill of the drive shaft ...

Description

The The invention relates to a method and a device for carrying out a Deformation compensation of valve leaves located in end positions in climate control devices, wherein the valve flap with an inside an elastic overall system existing actuator with a Drive shaft, provided with incremental positioning movements, in conjunction stands and moves between two end positions associated attacks becomes.

devices of the type described above are used for deformation compensation of Valve flaps when driven by actuators between two end positions, wherein due to the elastic deformation of the valve flap a Position deviation between the end positions of the valve flap and the end positions the drive shaft of the actuator occurs.

A exact positioning of the valve flap is due to a position deviation between the end position of the valve flap and the end position of the driving Motor shaft of the actuator prevented. Causes for the position deviation are summated tolerances in the moving parts and the elastic Deformation of the components of the valve flap. This affects the Components of the valve flap to varying degrees. Influence, for example, the flexural rigidity of the valve flap, the dimensional stability of the actuator and the compressive strength of a Seal material and the bearing surface whose size is inversely proportional to the indentation depth and thus to the deformation of the entire system behaves.

These Position deviation makes an initialization of the angular position of the travel the valve flap impossible. On the one hand, when trying to initialize the angular position the valve flap at its end position the deviating end position the motor shaft of the actuator a different end and thus start position for the Movement of the valve flap in the opposite direction to the actuator control back. On the other hand, in the elastic deformation of the valve flap by pressure against the end position mechanical energy in the valve flap saved. When switching off the power supply after detected End position through the control, the mechanical energy is released and leads to one return the valve flap away from its end position. A positional deviation between a supposed zero position of the motor shaft, as from the actuator control assumed, and the angular position of the valve flap unequal to it End position is the result.

In the consequence of both aforementioned effects arise for a renewed Movement of the valve flap an undefined starting position and thus an undefined target position between the two end positions in a later controlled Angular movement of the driving actuator.

• 1. ein Eingangsstromgerät, das Anschlüsse zur Aufnahme von Strom aus einer Energiequelle besitzt und daraus geregelten und Originalstrom generiert, welcher von den Bauteilen des Systems genutzt wird, wobei das Eingangsstromgerät einen Ein/Aus-Schalter besitzt, um bei Bedarf Strom vom System zu- oder abschalten zu können;
• 2. Motorsteuerelemente, welche ein erstes Set von Anschlüssen zur Aufnahme des geregelten und einfachen Stroms und ein zweites Set von Anschlüssen zum Empfang von logischen Steuersignalen besitzen, um daraus an Ausgangsanschlüssen Spannungsteuerungssignale zur bidirektionalen Steuerung der Bewegung der Motorwellen in offenen und geschlossenen Rückkopplungsschleifen-Steuerungssystemen in Erwiderung der logischen Steuersignale zu erzeugen;
• 3. einen externen Analog-Digital-Umwandler (ADC), welcher Eingangsanschlüsse besitzt, die mit Potentiometern der geschlossenen Rückkopplungsschleifen-Motoren gekoppelt sind, und welche mittels analoger Signale Positionsveränderungen der Motorwellen sichtbar machen und daraus an den Ausgangsanschlüssen äquivalent zu den analogen Signalen digitale Signale erzeugen;
• 4. eine Mikroprozessorsteuerung, bestehend aus: (1) einem Timer-System, welches ein Referenztakt-Signal liefert und in Verbindung mit RAM basierendem Zählwerk daraus an einem ersten Ausgangsanschluss ein erstes Taktsignal, – der gewählten Frequenz des Referenztakt-Signals folgend –, ausgibt sowie an einem zweiten Ausgangsanschluss ein zweites Taktsignal, – einer anderen gewählten Frequenz des ersten Referenztakt-Signals folgend –, ausgibt; (2) Klappenmotorsteuersoftware, welche Anweisungen für den Prozessor der Mikroprozessorsteuerung für die Erzeugung der digitalen Signale enthalten, welche zur Formung der logischen Steuerungssignale verwendet und an ein zweites Set von Anschlüssen der Motorsteuerelemente gesendet werden, wobei der Prozessor Anweisungen von der Klappenmotorsteuersoftware mit einer Frequenz abfragt, die durch das erste Taktsignal vorgegeben wird; (3) programmierbare Eingabe/Ausgabe-Schaltkreise, bestehend aus (a) programmierbaren Ausgaberegistern zum Empfang von digitalen Signalen des Prozessors an Eingangsanschlüssen und zur Herstellung von logischen Steuersignalen an Ausgangsanschlüssen daraus, welche zu einem zweiten Set von Ausgangsanschlüssen der Motorsteuerung gesendet werden, (b) eine serielle periphere Schnittstelle, welche die variablen digitalen Signale des externen ADC empfängt und daraus digitale Daten für den Prozessor herstellt, um Endpunkte für die an den Motorwellen angebrachten Bauteile anzuzeigen, und festzulegen, ob die externen ADC-Werte gültig sind, und (c) einen internen ADC, um Abweichungen des Originalstroms aus dem Eingangsstromgerät zu empfangen, während eine Motorwelle rotiert und dann äquivalente digitale Werte liefert, aus denen der Prozessor die durchschnittliche Systemspannung verglichen mit dem Motor ableitet; und (4) Klappenmotorsteuersoftware, welche Anweisungen für den Prozessor enthalten, die er nutzt für: (a) den Empfang der variablen digitalen Daten des externen ADC und nachfolgende Festlegung, ob die externen ADC-Werte gültig sind; (b) den Empfang der variablen Daten des ADC und Berechnung und Speicherung der daraus resultierenden durchschnittlichen Systemspannung des Motors; (c) die Abfrage der Klappenmotorsteuersoftware zur Ausführung von Anweisungen um einen Motor anzuschalten, und zum Erfassen der Dauer der Klappenbewegung von einer Ausgangsstellung bis zu einer festen Position, und um den Motor auszuschalten zur Beruhigung der Motor-Rückmeldung bei geschlossenen Rückkopplungsschleifen-Motoren, wobei der Prozessor Anweisungen der Klappenmotoreichsoftware mit derselben Frequenz abfragt, die durch das zweite Taktsignal vorgegeben wird.

A prospective setting device for electric motors and an associated calibration system are in the document US 5,369,342 A in which the principle and software for a motor calibration system for measuring the average system voltage of running electric motors and the transit time between the end positions of valve flaps, which are coupled to the drive shafts of the electric motor. The calibration system provides a software / hardware engine calibration system for measuring motor parameters of electric motors and the travel time between the end positions of the butterfly valves, a system for use in calibrating electric motors which are used as hybrid open and closed loop feedback motor control systems the closed-loop feedback control systems use motors with potentiometers which visualize changes in position of the motor shafts by means of analog signals, the motor shafts being connected to components in both open and closed feedback loop control systems in such a way as to move connected components at least between two end positions on an arc, and contains:

• 1. an input power device having terminals for receiving power from a power source and generating therefrom regulated and original power used by the components of the system, the input power unit having an on / off switch to supply power from the system as needed. or to be able to switch off;
• 2. Motor control elements having a first set of terminals for receiving the regulated and simple current and a second set of terminals for receiving logic control signals to provide at output terminals voltage control signals for bidirectionally controlling the movement of the motor shafts in open and closed loop control systems To generate response of the logical control signals;
• 3. An external analog-to-digital converter (ADC) having input terminals coupled to potentiometers of the closed loop motors, which use analog signals to detect changes in the position of the motor shafts and, at the output terminals equivalent to the analog signals, digital signals produce;
• 4. a microprocessor control comprising: (1) a timer system which provides a reference clock signal and in conjunction with RAM ba senderem counter thereof at a first output terminal, a first clock signal, - the selected frequency of the reference clock signal following - outputs, as well as at a second output terminal a second clock signal, - following another selected frequency of the first reference clock signal - outputs; (2) flap motor control software including instructions for the microprocessor control processor to generate the digital signals used to form the logic control signals and sent to a second set of engine control element ports, wherein the processor polls instructions from the engine control software at a frequency given by the first clock signal; (3) programmable input / output circuits consisting of (a) programmable output registers for receiving digital signals from the processor at input terminals and for producing logic control signals at output terminals thereof which are sent to a second set of motor controller output terminals (b ) a serial peripheral interface which receives the variable digital signals from the external ADC and uses them to generate digital data for the processor to indicate endpoints for the components attached to the motor shafts, and determine whether the external ADC values are valid, and (c ) an internal ADC to receive deviations of the original current from the input power device while a motor shaft is rotating and then providing equivalent digital values from which the processor derives the average system voltage compared to the motor; and (4) flap motor control software containing instructions for the processor that it uses for: (a) receiving the variable digital data of the external ADC and then determining whether the external ADC values are valid; (b) receiving the variable data of the ADC and calculating and storing the resulting average system voltage of the engine; (c) polling the flap motor control software to execute instructions to turn on a motor, and to detect the duration of flap movement from a home position to a fixed position, and to turn the motor off to quiet the engine feedback on closed loop motors, wherein the processor polls instructions of the flap motor software at the same frequency as dictated by the second clock signal.

One Problem is that the calibration system is not on the load the elastic total system including the deformation of the valve flap dependent on from the torque of the drive shafts in the area of their end positions to the attacks refers and thus in the flap motor control software performing a Deformation compensation both in the originally installed state as well as information on aging deformation compensation missing.

Furthermore, a device for controlling an air mix door for a vehicle air conditioner in the document DE 198 17 819 C2 which includes an opening position detecting means for detecting an opening position of an air mix door and controlling a motor actuator on the basis of an opening position signal from the opening position detecting means so that the air mix door is at a target opening position provided with:
A malfunction detecting device for detecting a malfunction of the opening position detecting device;
an initial position setting device responsive to a malfunction detection of the malfunction detecting device to set the initial position of the air mix door by driving the motor actuator to a "fully hot" position or a "completely cold" position when it is necessary to move the air mix door to one of the " Very hot "position or the" totally cold "position to bring different new target opening position
a return drive time calculation means responsive to the initial position setting means determining a return opening angle width to the air mix door from the set initial position to the new target opening position detects a current battery voltage and calculates a return drive time required for reversely rotating the air mix door by the return opening angular width based on the return opening angle width and the current battery voltage in that a time error resulting from a torque variation of the motor actuator due to the battery voltage is corrected, and
a return drive means responsive to the return drive time calculation means, by driving the motor actuator, reversely driving the air mix door by the return drive time.

It should the malfunctions from the potentiometer, which is part of the control device, be eliminated.

A problem is that one of the potentiometer incorrectly specified and detected opening position of the air mix door of the trigger This is for the elimination of an occurring time disturbance. In the Potentiometerstörangaben the air mixing damper is only in the end positions on, in order to obtain a time from there, which is to serve as a basis for establishing a return time of the actuator in the intended target position of the air mix door. That is, only for the setting of a target position in the intermediate layers between the end positions of the air mixing valves, the air mix door is brought into one of its end positions, and then returned to the intended target position via the calculation of a return drive time for the actuator. The air mixing valve has neither in the end positions nor in the intermediate layers on a deformation, which would be reason to perform a compensation of the same in the respective end position. There is therefore no indication that the elastic deformation of the air mixing valve and the corresponding software reactions on the part of the control system and of the actuator to the end positions of the air mixing valve present at the stops are taken into account.

A method and a device for functional testing of motor-driven slats and / or flaps a heating and / or air conditioning system of a vehicle and an apparatus for performing the method are in the document DE 100 60 687 A1 described, which has nozzles for the air distribution and air quantity, which are arranged as center nozzles or side nozzles in the dashboard or on the door, wherein for adjusting the air device to the nozzles horizontally and / or vertically arranged lamellae and for adjusting the amount of air flow valves are provided and the fins and / or air quantity flaps are driven by a motor. It is envisaged that when the vehicle is turned off, the air quantity flaps are moved to a parking position in which a limit switch is arranged, which signals a contact pulse to the control unit.

One Problem is that the parking position in all situations, including the End positions of the air quantity flap can be, but nothing with countermeasures has to do with an elastic deformation of the air quantity flap.

The specified solutions work largely on a consistently unified system for Elimination of the occurring position deviations both in the intermediate positions as well as in the end positions of the valve flaps, but without the deformation or deflection of the elastic overall system including the postelastic valve flaps must be taken into account at the limit stop.

Of the The invention is therefore based on the object, a method and a device for carrying out a deformation compensation of valve located in the end positions in climate control devices designed in such a way that at a kick-off of the Valve flap to a stop which occurs in the end positions elastic Deformation of the elastic overall system including the Valve flap by suitable steps in the area of the actuator is compensated for, springs of the elastic valve flap from the stop away and thus a backward leaps and bounds to avoid the end position. It should be a controller or a Control of the actuator can be carried out such that the valve flap and the return energy the deformed valve flap by the provision of the drive shaft including the setting of the actuator are mastered. The task is solved by the features of claims 1 and 9.

• a) das Erreichen einer Winkelversetzung α in der Endposition A_v, B_v der Antriebswelle zu der in der Endlage A₀, B₀ am Anschlag befindlichen und verformten Ventilklappe festgestellt wird, wobei die Winkelversetzung α durch die belastende Verformung des elastischen Gesamtsystems einschließlich der Ventilklappe durch Einwirkung eines Drehmoments M_x der Antriebswelle auftritt,
• b) innerhalb der Winkelversetzung α eine altersbedingte Veränderung der Verformung des elastischen Gesamtsystems einschließlich der Ventilklappe durch eine programmierte Alterskompensation berücksichtigt wird,
• c) bei Erreichen der winkelversetzten Endposition A_v, B_v der Antriebswelle und nach dem Stillstand des Stellantriebs eine Rückstellbewegung der Antriebswelle durchgeführt wird, indem die winkelversetzte Endposition A_v, B_v der Antriebswelle des Stellantriebs an die der Endlage A₀, B₀ zugeordnete definierte Position der Antriebswelle um die Winkelversetzung α zurückgestellt wird und
• d) die Energiezufuhr zum Stellantrieb erst nach dem Abschluss der Rückstellbewegung unterbrochen wird und sich die Ventilklappe dann verformungsfrei in ihrer Endlage A₀, B₀ an den Anschlägen befindet.

In the method for performing a deformation compensation of valve located in end position valves in air conditioning devices, the valve flap with an existing within an elastic overall system actuator with a drive shaft, provided with incremental positioning movements, in conjunction and is moved between two end positions A ₀ , B ₀ associated stops .
wherein according to the characterizing part of patent claim 1

• a) the achievement of an angular displacement α in the final position A _v , B _{v of} the drive shaft to the end position A ₀ , B _{0 located} at the stop and deformed valve flap is detected, the angular displacement α by the loading deformation of the elastic overall system including the valve flap by the action of a torque M _{x of} the drive shaft occurs,
• b) within the angular displacement α, an age-related change in the deformation of the elastic overall system including the valve flap is taken into account by a programmed age compensation,
• c) upon reaching the angular offset end position A _v , B _{v of} the drive shaft and after the stop of the actuator a return movement of the drive shaft is performed by the angular offset end position A _v , B _{v of} the drive shaft of the actuator to the end position A ₀ , B ₀ assigned Defined position of the drive shaft is reset by the angular displacement α and
• d) the power supply to the actuator is interrupted only after the completion of the return movement and the valve flap is then deformation-free in its end position A ₀ , B ₀ at the attacks.

The amount of the return movement over the typical deformation of the valve flap is at Einwir kung of a torque M _{x of} the drive shaft defined and there is the deformation compensation by a return movement by a return angle α of a predetermined value.

Of the Aging process of the material of the valve flap and the so accompanying change of the elastic deformation behavior can by a in a control or regulation programmed aging compensation are taken into account.

• a) die Rückstellbewegung des Stellantriebs über die stets erneut sensorisch festgestellte Verformung der Ventilklappe bei Einwirkung des Drehmoments M_x der Antriebswelle definiert werden,
• b) die Regelung der Rückstellbewegung mit einer Regeleinrichtung durch einen variablen, nach der tatsächlichen Verformung ermittelten Rückstellwinkel α und
• c) die Feststellung der aktuellen Lage der Ventilklappe durch die Sensoren und ihre Hilfsvorrichtungen durchgeführt werden.

It can

• a) the return movement of the actuator via the always sensory detected deformation of the valve flap under the influence of the torque M _{x of} the drive shaft are defined,
• b) the control of the return movement with a control device by a variable, determined after the actual deformation return angle α and
• c) the determination of the current position of the valve flap by the sensors and their auxiliary devices are performed.

Of the The elastic deformation associated return angle α can Material characteristics, from the Resistance torque of the components subjected to bending as well as the area and from the compressive strength of the material of seals as theoretical Value to be calculated.

The return angle α can be determined by measuring the deformation when applying a torque M _x .

to Function control of the actuator can at the stop a blocking-avoiding stop area be determined.

The Energy supply can be at the distance of the valve flap from the nearest Stop outside interrupted the specified anti-blocking stop area become.

In the apparatus for performing a deformation compensation of valve located in end position valves in air conditioning devices, the valve flap with a present within an elastic overall system actuator with a drive shaft, provided with incremental positioning movements, in conjunction and is movable between two end positions A ₀ , B ₀ associated attacks arranged according to the characterizing part of claim 9 of the valve flap, the actuator with the drive shaft and the end positions A ₀ , B _0, a control device is associated with a programmed compensation control in which the return movement of the offset by an angle α end position A _v , B _{v of} the drive shaft of the actuator is in the position corresponding to the end position A ₀ , B _{0 of} the valve flap at the stop, given the actual actual deformation of the elastic overall system including the valve flap depending on the applied D torque M _{x is} defined, as well as a programmed age compensation control, which determines the return movement with age-related change of the elastic deformation of the elastic overall system including the valve flap and transmits the determined return movement as a return angle α to the drive valve connected to the valve flap.

The Device may include a valve flap, an actuator, the stops, a Drive shaft of the actuator and have a control device.

Instead of the control device, the device can be a control device and further comprising a mechanical end position sensor, an approach end position sensor, a slider track of the potentiometer, a wiper of the potentiometer, a data line and an activator.

in the Below is the operation of the device according to the described Procedure explained.

The Drive shaft of the actuator leads after reaching their end positions a return movement out, whereby the drive shaft of the actuator defines a defined Occupies the final position and the amount of the return movement is defined over the typical Deformation of the valve flap under the influence of a torque of Motor shaft and the deformation compensation by a return angle α of predetermined Value takes place. The amount of a return movement corresponds the amount of the determined deformation of the valve flap including associated components. In addition, positional deviations are to be taken into account with the game the moving components of the valve flap and the drive means result. The determination of the deformation can be done by measuring a Deformation when applying the torque, that of the driving in normal operation Actuator corresponds, done. Also a calculation of the deformation can be done by over Material characteristics and the moment of resistance of the loaded on bending components and the area and compressive strength of the material of seals a theoretical Value is determined.

The function of the actuator is based on different methods. For example, stepper motors and hydraulic actuators are used, as are DC actuators without signal feedback systems. The DC actuators are based in one advantageous embodiment of the "pulse-count" technology.

Around the return movement only in the case to initiate, if the valve flap actually one of the has reached both end positions, at each stop of the actuator the position of the drive shaft or the angular position of the valve flap checked. The end position of the motor shaft is detected and accordingly the decision over the use of deformation compensation after standstill of the actuator dependent on from reaching an end position of the motor shaft. The recognition of the End position of the motor shaft is effected by a standstill algorithm (English stall detection algorithm), which registers the stalling of the engine. In order to secure its function and in case of a blocking of the engine to signal no end position at a position other than the end positions will over the count The steps of the actuator set an area within of which it is a blocking of the motor to the end position. If this is done by the control device any angular position of the valve flap between the two end positions, determined and as matching registered with the specification of the control device takes place immediately the interruption of the power supply to the actuator.

The Power supply to the motor must not be interrupted before over the Use of the deformation compensation was decided and the return movement possibly completed. The aim is to return the cocked valve flap away from the end position with all consequences to avoid. Instead, the adjusting movement is initiated back and completed in the specified amount. Only after completion of the adjusting movement, the energy supply to the Actuator interrupted and the process of exact end position positioning completed with it.

Instead of the final position of the actuator can be the end position of the valve flap be determined.

By the rigidly predetermined amount of the expected deformation, for the components the valve flap has been detected, the system can not be dynamic on changes react. For example, changes can be made in the form of changes the material properties occur. Is the valve flap made of high polymer Made of plastic, the aging of the material brings about property changes with himself. So a plastic can be subjected to a load by plastic Dodge deformation. On the other hand, embrittlement can occur, causing the Elasticity wears off and thus correspondingly elastic deformations are reduced. To the sealing surfaces applied plastic foams behave accordingly. They can become brittle and thus harder and on the other hand by the frequent Burden on the highest loaded areas impressions obtained by plastic deformation. To take these effects into account and a permanently safe and error-free operation of the system to ensure, contains the controller has a corresponding programming. The described, slow-moving changes are stored in the program memory and change the function accordingly the control in such a way that the set amount of the adjusting movement back, accordingly the known properties of the material and its time-dependent change, time-dependent is adjusted. As the aging also depends on the climatic environmental conditions depends adapted to the application variants of the aging program provided. The aging process of the material of the valve flap and the accompanying change of the elastic deformation behavior are by a in the control programmed aging compensation taken into account.

The Return movement can over the always sensory detected deformation of the valve flap be defined when the torque of the motor shaft. Thus, the control of the deformation compensation with the control device takes place by a variable return angle α, the after the actual Deformation is determined, wherein the determination of the deformation or the current position of the valve flap by the sensors and their Auxiliary devices takes place. The sensors speak for the pressure the valve flap to the end position or signal the approach of Valve flap to the end position. Also in the control device of the actuator integrated systems are suitable, the end position of the valve flap to signal. So let changed voltage conditions in the circuit of the actuator to a violent stop of the Close the motor by reaching one of the end positions of the valve flap.

Instead of the rigid specification of an actuating movement back through the control device a regulation can be used. This determines by input variables the Position of the drive shaft of the actuator or the angular position the valve flap and derives from it the required adjusting movement back. The Position can be different in different ways physical effects are determined, some of which, without the possibilities restricting the position determination to be called hereafter should.

To determine the exact position of the drive shaft of the actuator and the angular position of the valve flap, a potentiometer may be connected to the drive shaft of the actuator. In addition, the number of steps of the actuator in both directions of movement can be counted to the posi tion. To determine the end position, this is provided with a sensor which emits a signal when approaching or touching the end position by the valve flap. This sensor is electromechanically designed as a limit switch or based in its function on electromagnetic field effects and signaled as the valve flap approaches the changed magnetic field or electric field.

• • Ausgleich der Verformung der Ventilklappe an den Endlagen,
• • gesicherte Signalisierung der Nullstellung an den Endlagen,
• • sichere Funktion der Steuerung bei der Positionierung an beliebigen Winkelstellungen zwischen den Endlagen und
• • bei Anwendung bei der Klimaregelung Sicherung der exakten Funktion durch korrekte Temperaturregelung im Innenraum des Fahrzeugs.

The following advantages are associated with the method according to the invention:

• • compensation of the deformation of the valve flap at the end positions,
• • secured signaling of the zero position at the end positions,
• • safe function of the control when positioning at any angle between the end positions and
• • When used with the air conditioning system, ensure the exact function by correct temperature control in the vehicle interior.

The Invention will now be described by way of embodiments with reference closer to the drawings explained. Show it:

1 : Torque applied valve flap at end position A ₀ ,

2 Valve flap near the end position A ₀ after a jump in the sudden reduction of the torque,

3 : exemplary misalignment of the valve flap,

4 : Resetting the valve flap after reaching end position A ₀ and

5 : Use of a control for deformation compensation.

1 shows the valve flap 1 , attached to the drive shaft 5 of the actuator 2 , The torque M _x , that of the actuator 2 developed and on the drive shaft 5 and the valve flap 1 transmits, thereby leading to an elastic deformation of the valve flap 1 , The angular position of the drive shaft 5 A _v is thus different from the end position A ₀ with the stop 3 the valve flap 1 , If at this moment the controller reaches the end position A ₀ with the stop 3 signals an error in the angular position in the amount of deviation between the end position A ₀ with the stop 3 and the actual angular position A _{v of} the drive shaft 5 , The deformation of the valve flap 1 is exemplary for the entirety of the components of the valve flap 1 and their elastic deformation in sum irrespective of their agreement with that in 1 indicated design. Also shown is the control device 6 and the other end position B ₀ with the stop 4 the valve flap 1 ,

2 shows the valve flap 1 after it is no longer acted upon by the torque M _x (M = 0), because the power supply to the actuator 2 was interrupted. With the elastic deformation of the valve flap 1 , corresponding 1 , is stored in this deformation energy. After the sudden reduction of the torque M _x is in the valve flap 1 stored energy free and leads to a return of the valve flap 1 from the end position A ₀ with the stop 3 path. This results in a deviation between the end position A ₀ with the stop 3 and the actual starting position A _v . The starting position A _{v of} the drive shaft is controlled by the control device 6 erroneously as end position A ₀ with the stop 3 is interpreted, but is the faulty end position A ₀ '. As a result, the actual angular positions of the valve flap are actually controlled 1 different from the desired.

3 shows the deviation of the controlled angular positions P _{n of} the valve flap 1 from the actually reached angular position P _n '. The angular deviation corresponds to the angular deviation α, the return to after 2 originated.

4 represents the application of the method. After reaching the end position A ₀ with the stop 3 through the valve flap 1 and their elastic deformation, as in 1 shown, the return movement is performed according to the method. Without the actuator 2 previously turned off, the predetermined steps in the opposite direction, ie from the actual angular position A _{v of} the drive shaft 5 when deformation away, executed. Here, the elastic deformation goes back, in the valve flap 1 stored energy is slowly dissipated, and the end position of the drive shaft 5 corresponds to the return movement of the end position A ₀ with the stop 3 the valve flap 1 ,

The thus precisely determined starting position serves the control device 6 afterwards, to precisely set the predetermined angular positions for the control of the climate control device.

The specification of the angular position to be compensated, equal to the deviation between A ₀ and A _v in 1 , according to the mechanical properties of the valve flap 1 and all related components. In particular, the properties of bending stiffness in components subjected to bending and compressive strength of components subject to pressure come into consideration. This applies accordingly to other load cases. The stiffness in turn is influenced by shape (cons standing moment) and material properties (tensile strength) of the valve flap and its components. After determining these variables, the specification of the angular position to be compensated can take place. This can take into account the mechanical properties of the valve flap 1 and the torque M _{x of} the actuator 2 be calculated. The calculation is done in the experiment by measuring the actual deformation of the valve flap 1 under the influence of the torque M _{x of} the actuator 2 tested on pressure against the end position A ₀ or B ₀ or determined solely by it.

The moment of resistance of the components of the valve flap 1 is different according to load direction. If this is the case, for the end positions A ₀ must be with the stop 3 and B ₀ with the stop 4 in each case different specifications of the angular position to be compensated take place.

Is the valve flap 1 or parts thereof are made of materials that are subject to aging, ie change their properties over time, with a change in the stiffness of the entire valve flap 1 to count. Thus, the state can set, that the original default for the deformation compensation no longer the actually occurring deformation of the valve flap 1 corresponds and thus again a deviation of the angular position occurs. To avoid this condition, the aging of the material can be anticipated and stored in a time-varying program.

The program then changes the angle of the return movement in the deformation compensation and adapts it to the expected development of the mechanical properties, in particular the elastic deformation of the valve flap 1 , at.

It can be done the control of the deformation compensation instead of the control after a fixed angular position. In the case comes in place of the controller 6 a control device 7 for use.

Such an embodiment shows 5 , In this case, the control device 6 through the control device 7 replaced. The control device 7 receives data via the data line 12 from a sensor 8th . 9 , Different embodiments of the sensors are in 5 for the end position A ₀ with the stop 3 shown. For the end position B ₀ with the stop 4 The same options and variants apply as for the use of the sensors. The end position sensor 8th registers the force of the valve flap 1 to the end positions A ₀ with the stop 3 or B ₀ with the stop 4 , The approach end position sensor 9 registered contactless approach of the valve flap 1 to the end positions A ₀ with the stop 3 or B ₀ with the stop 4 and works, for example, by registering changes in the electromagnetic properties of the environment of the sensor, or it responds to the change in the electric field as the valve flap approaches 1 or an activator attached thereto if necessary 13 which triggers the reaction at the sensor. The activator 13 is required if the material of the valve flap 1 alone does not trigger a reaction on a particular sensor. This is the case with plastics, for example.

Furthermore, the end position as well as the position of the valve flap 1 be determined in any angular position when using a potentiometer with the slider track of the potentiometer 10 and a grinder 11 is used. The grinder 11 is with the drive shaft 5 of the actuator 2 connected and moves according to the angular position of the drive shaft 5 over the slider track of the potentiometer 10 , Instead of the potentiometer for analog determination of the angular position, rotary encoders can also be used to determine the angular position and the generation of digital data.

In all variants of the deformation compensation according to the method according to the invention, the end position is to be checked before the end of the intended deformation compensation. If the end position is not reached, so is the valve flap 1 any angular position between the end positions A ₀ and B ₀ taken, and the deformation compensation may not be initiated. If reaching one of the end positions A ₀ or B _{0 of} the control device 6 or the control device 7 signaled, however, the inventive method of deformation compensation is performed.

1

valve flap

2

actuator

3

attack

4

attack

5

drive shaft of the actuator

6

control device

7

control device

8th

mechanical limit sensor

9

Approach end position detection sensor

10

slider track of the potentiometer

11

grinder of the potentiometer

12

data line

13

activator

A ₀

end position

A ₀ '

erroneous end position

B ₀

end position

A _v

end position

bv

end position

M _x

torque

α

Return angle

P _n

controlled angular position

P _n '

reached angular position

Claims (11)

Method for carrying out deformation compensation of end-position valve flaps in air conditioning devices, wherein the valve flap ( 1 ) with an existing within an elastic overall system actuator ( 2 ) with a drive shaft ( 5 ), provided with incremental actuating movements, is in communication and between two end positions A ₀ , B ₀ associated attacks ( 3 . 4 ) is moved, characterized in that a) the achievement of an angular displacement α in the end position A _v , B _{v of} the drive shaft ( 5 ) to that in the end position A ₀ , B ₀ at the stop ( 3 . 4 ) located and deformed valve flap ( 1 ), wherein the angular displacement α by the loading deformation of the elastic overall system including the valve flap ( 1 ) by the action of a torque M of the drive shaft ( 5 ) occurs, b) within the angular displacement α an age-related change in the deformation of the elastic total system including the valve flap is taken into account by a programmed age compensation, c) upon reaching the angular offset end position A _v , B _{v of} the drive shaft ( 5 ) and after the stop of the actuator ( 2 ) a return movement of the drive shaft ( 5 ) is carried out by the angular offset end position A _v , B _{v of} the drive shaft ( 5 ) of the actuator ( 2 ) to the end position A ₀ , B ₀ associated defined position of the drive shaft ( 5 ) is reset by the angular displacement α and d) the power supply to the actuator ( 2 ) is interrupted only after completion of the return movement and the valve flap ( 1 ) then deformation-free in its end position A ₀ , B ₀ at the attacks ( 3 . 4 ) is located. A method according to claim 1, characterized in that the amount of the return movement on the typical deformation of the valve flap ( 1 ) upon application of a torque M _{x of} the drive shaft ( 5 ) is defined and the deformation compensation takes place by a return movement by a return angle α of a predetermined value. A method according to claim 1 or 2, characterized in that the aging process of the material of the valve flap ( 1 ) and the concomitant change in the elastic deformation behavior by a programmed in a control or regulation aging compensation are taken into account. Method according to one of the preceding claims, characterized in that a) the return movement of the actuator ( 2 ) on the always again sensory detected deformation of the valve flap ( 1 ) upon application of the torque M _{x of} the drive shaft ( 5 ) is defined, b) the control of the return movement with a control device ( 7 ) by a variable, determined after the actual deformation return angle α and c) the determination of the current position of the valve flap ( 1 ) by the sensors and their auxiliary devices ( 8th . 9 . 10 . 11 . 12 . 13 ) be performed. Method according to one of the preceding claims, characterized in that the elastic deformation associated return angle α from material characteristics, from the moment of resistance of the loaded components on bending as well out of the plane and from the compressive strength of the material of seals as theoretical Value is calculated. Method according to one of the preceding claims, characterized in that the return angle α is determined by measuring the deformation upon application of a torque M _x . Method according to one of the preceding claims, characterized in that for the functional control of the actuator ( 2 ) at the stop ( 3 . 4 ) a blocking-avoiding attack area is determined. A method according to claim 7, characterized in that the energy supply at layer spacing of the valve flap ( 1 ) from the closest stop ( 3 . 4 ) is interrupted outside the designated anti-blocking stop area. Device for carrying out a deformation compensation of end-position valve flaps in air conditioning devices, wherein the valve flap with an existing within an elastic overall system actuator ( 2 ) with a drive shaft ( 5 ), provided with incremental actuating movements, is in communication and between two end positions A ₀ , B ₀ associated attacks ( 3 . 4 ) is arranged movable, characterized in that the valve flap ( 1 ), the actuator ( 2 ) with the drive shaft ( 5 ) and the end positions A ₀ , B ₀ a control device ( 6 ), which is a programmed compensation control in which the return movement of the offset by an angle α end position A _v , B _{v of} the drive shaft ( 5 ) of the actuator ( 2 ) in the position which the end position A ₀ , B _{0 of} the valve flap ( 1 ) at the stop ( 3 . 4 ), preassigned with the actual deformation of the elastic overall system including the valve flap ( 1 ) is defined as a function of the applied torque M, and contains a programmed age compensation control, which controls the return movement with age-related change of the elastic deformation of the elastic overall system including the valve flap ( 1 ) and the determined return movement as a return angle α to the with the valve flap ( 1 ) connected drive shaft ( 5 ) transmits. Device for carrying out a method according to claim 9, characterized in that it comprises a valve flap ( 1 ), an actuator ( 2 ), the attacks ( 3 and 4 ), a drive shaft ( 5 ) of the actuator ( 2 ) and a control device ( 6 ) having. Apparatus according to claim 10, characterized in that it is used instead of the control device ( 6 ) a control device ( 7 ) and further comprises a mechanical limit position sensor ( 10 ), an approach end position sensor ( 9 ), a slider track ( 10 ) of the potentiometer, a grinder ( 11 ) of the potentiometer, a data line ( 12 ) and an activator ( 13 ) having.