CN116080621B - Method for evaluating braking noise of light truck type - Google Patents
Method for evaluating braking noise of light truck type Download PDFInfo
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- CN116080621B CN116080621B CN202310064207.4A CN202310064207A CN116080621B CN 116080621 B CN116080621 B CN 116080621B CN 202310064207 A CN202310064207 A CN 202310064207A CN 116080621 B CN116080621 B CN 116080621B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 35
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000012216 screening Methods 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000012795 verification Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a method for evaluating braking noise of a light truck type, which specifically comprises the following steps: selecting friction plates made of different materials; mounting a sensor on the automobile; selecting a plurality of routes with wide places and quiet environment, respectively assembling friction plates made of different materials on an automobile, sequentially performing braking tests under a rapid working condition, a city working condition and a mountain working condition, and searching and recording braking noise and vehicle speed information in the braking process; according to the brake noise and the vehicle speed information under the rapid working condition, the urban working condition and the mountain working condition, the noise weighting data of the friction plates made of different materials are obtained, and the optimal friction plates are screened according to the noise weighting data made of different materials. According to the invention, the braking noise of the friction plates made of different materials is searched and recorded under the rapid working condition, the urban working condition and the mountain working condition, and the braking noise under different working conditions is organically combined together by giving the weight coefficient to the different working conditions, so that the optimal friction plates can be conveniently screened.
Description
Technical Field
The invention relates to the technical field of automobile braking, in particular to a method for evaluating braking noise of a light truck type.
Background
Since the light truck has a main function of a cargo transportation means, there has been much attention paid to braking efficiency, and in recent years, with the increase of comfort requirements of customers, the attention paid to the braking noise of the light truck type has been paid more and more. NVH performance of vehicles has become a particular concern in vehicle development.
The existing friction plates are various in variety and different in performance, the existing automobile brake system is more concerned about the brake performance of the friction plates, the noise of the brake system is lack of attention in the braking process, and huge noise is generated in the braking process due to the friction of the friction plates, so that the technical problem that the driving experience is improved due to the noise generated in the working process of the friction plates with small screening noise is solved.
Disclosure of Invention
The invention aims to improve and innovate defects and problems existing in the background art, and provides a method for evaluating braking noise of a light truck type.
A method for evaluating the braking noise of a light truck type specifically comprises the following steps:
s1, selecting friction plates made of different materials;
S2, installing a sensor on the automobile, wherein the sensor at least comprises a speed, a temperature, noise data and brake vibration data for searching and recording the automobile;
s3, selecting a plurality of routes with wide places and quiet environment, respectively assembling friction plates made of different materials on an automobile, sequentially performing braking tests under a rapid working condition, an urban working condition and a mountain working condition, and searching and recording cold-state and hot-state Squeal braking noise and vehicle speed information in the braking process;
and S4, acquiring Squeal noise weighted data of friction plates made of different materials according to Squeal braking noise and vehicle speed information under the rapid working condition, the urban working condition and the mountain working condition, and screening the optimal friction plates according to Squeal noise weighted data made of different materials.
According to the technical scheme, the braking noise data of the friction plates made of different materials are obtained by searching and recording the braking noise of the friction plates made of different materials under the rapid working condition, the urban working condition and the mountain working condition, so that the testing working condition is more close to the using working condition of a customer, the verification working condition is comprehensive, the using condition of the customer is fully simulated, and the actual using requirement of the customer is met; the method has multiple application verification dimensions and high reliability, and the obtained brake noise data is coupled with Squeal brake noise and vehicle speed information, so that the brake noise data can fully reflect the performance of the friction plate at each speed, and the brake noise under different working conditions are organically combined together by giving weight coefficients to the different working conditions, thereby being convenient for screening the optimal friction plate.
Further, the friction plate comprises a rubber-based friction plate, a resin-based friction plate, a carbon fiber friction plate and a semi-metal friction plate.
The further scheme is that the sensor in the step S2 at least comprises a vehicle speed sensor, a temperature sensor, a vibration acceleration sensor and a microphone sensor, wherein the vehicle speed sensor is used for recording the speed of a vehicle, the temperature sensor is used for recording the temperature of a brake, the vibration acceleration sensor is used for being installed on the brake of the automobile, the microphone sensor is installed in the middle position of a cockpit, and the microphone sensor is used for recording noise data.
Further, the step S3 specifically includes:
The friction plates made of different materials are sequentially arranged on a test automobile, the test is sequentially carried out under the rapid working condition, the urban working condition and the mountain working condition according to different speeds, the light stepping braking is respectively carried out in each direction of the forward/backward straight running, the forward/backward left turning and the forward/backward right turning, and Squeal braking noise and vehicle speed information during the light stepping braking are searched and recorded.
The further scheme is that the line mileage ratios of the fast working condition, the city working condition and the mountain working condition in the step S3 are 45%, 25% and 30% respectively.
Further, the step S4 specifically includes:
step S41, squeal noise data of friction plates made of different materials under various working conditions are obtained:
Quick condition Squeal noise data= (Squeal noise decibel 11 vehicle speed 11 + Squeal noise decibel 12 vehicle speed 12 +). Squeal noise decibel 1N vehicle speed 1N)/(vehicle speed 11 +vehicle speed 12 +). Vehicle speed 1N), wherein if the corresponding noise of the vehicle speed 1N lightly stepping brake is not Squeal noise, the Squeal noise decibel 1N is assigned to 0;
Urban operating condition Squeal noise data= (Squeal noise decibel 21 vehicle speed 21 + Squeal noise decibel 22 vehicle speed 22 +), squeal noise decibel 2K vehicle speed 2K)/(vehicle speed 21 +vehicle speed 22 +). Vehicle speed 2K), wherein if the corresponding noise of vehicle speed 2K lightly stepping on the brake is not Squeal noise, squeal noise decibel 2K is assigned as 0;
Mountain condition Squeal noise data= (Squeal noise decibel 31 vehicle speed 31 + Squeal noise decibel 32 vehicle speed 32 +). Squeal noise decibel 3L vehicle speed 3L)/(vehicle speed 31 +vehicle speed 32 +). Vehicle speed 3L), wherein if the noise corresponding to the vehicle speed 3L lightly stepping brake is not Squeal noise, squeal noise decibel 3L is assigned to 0;
step S42, squeal noise weighted data of friction plates made of different materials are obtained:
Squeal noise weighted data = fast operating mode Squeal noise + fast operating mode weighting coefficient + city operating mode Squeal noise + city operating mode weighting coefficient + mountain area operating mode Squeal noise + mountain area operating mode weighting coefficient;
And S43, judging the numerical value of Squeal noise weighted data of friction plates made of different materials, and screening the optimal friction plate.
The further scheme is that the fast working condition weight coefficient is the same as the fast working condition distance ratio, the city working condition weight coefficient is the same as the city working condition distance ratio, and the mountain working condition weight coefficient is the same as the mountain working condition distance ratio.
Further, the rapid working condition vehicle speed comprises forward running 60km/h, forward running 70km/h and forward running 80km/h and forward running left-turning and forward running right-turning 35km/h and forward running 45 km/h.
Further, the city working conditions comprise forward straight running 5km/h, 10km/h, 15km/h, 20km/h, 30km/h, 40km/h and 50km/h lightly stepping braking, forward left-turning and forward right-turning 5km/h, 10km/h, 15km/h, 20km/h and 25km/h lightly stepping braking, reverse straight running 5km/h, 10km/h, 15km/h, 20km/h and 25km/h lightly stepping braking, reverse left-turning and reverse right-turning 5km/h, 10km/h and 15km/h lightly stepping braking.
Further, the mountain area working conditions comprise forward running 10km/h, 15km/h, 20km/h, 30km/h, 35km/h, 40km/h and 45km/h and forward left turning and forward running right turning, and forward running 10km/h, 15km/h and 20km/h and lightly stepping the brakes.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the braking noise of the friction plates made of different materials is searched and recorded under the rapid working condition, the urban working condition and the mountain working condition, so that the braking noise data under the multidimensional degree is obtained, the test working condition is more close to the use working condition of a customer, the verification working condition is comprehensive, the use condition of the customer is fully simulated, and the actual use requirement of the user is met; the method has multiple application verification dimensions and high reliability, and the obtained brake noise data is coupled with Squeal brake noise and vehicle speed information, so that the brake noise data can fully reflect the performance of the friction plate at each speed, and the brake noise under different working conditions are organically combined together by giving weight coefficients to the different working conditions, thereby being convenient for screening the optimal friction plate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for evaluating braking noise of a light truck type according to an embodiment of the invention;
Detailed Description
In order that the objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the invention provides a method for evaluating braking noise of a light truck, which specifically comprises the following steps:
s1, selecting friction plates made of different materials;
specifically, the friction plates of different materials include rubber-based friction plates, resin-based friction plates, carbon fiber friction plates and semi-metal friction plates.
Step S2, installing a sensor on the automobile, wherein the sensor comprises a sensor for searching and recording the speed, the temperature, the noise data and the brake vibration data of the automobile;
Specifically, the sensor comprises a vehicle speed sensor, a temperature sensor, a vibration acceleration sensor and a microphone sensor, wherein the vehicle speed sensor is used for recording the speed of a vehicle, the temperature sensor is used for recording the temperature of a brake, and whether the temperature of the brake is cold state noise or hot state noise is judged; the vibration acceleration sensor is used for being installed on an automobile brake, the vibration acceleration sensor is used for recording vibration data when braking noise occurs, whether the vibration data belong to Squeal braking noise or not is judged through the vibration data, the microphone sensor is installed at the middle position of the cockpit, and the microphone sensor is used for recording noise data, namely braking noise decibel values. In order to avoid the influence of the environment on the braking noise, an environment humidity sensor can be installed and used for recording the environment humidity when the noise occurs, and eliminating the braking noise with larger environment humidity deviation when the data are arranged.
S3, selecting a plurality of routes with wide places and quiet environment, respectively assembling friction plates made of different materials on an automobile, sequentially performing braking tests under a rapid working condition, an urban working condition and a mountain working condition, and searching and recording cold-state and hot-state Squeal braking noise and vehicle speed information in the braking process;
Wherein Squeal braking noise is sharp and harsh steady-state noise generated by friction of a friction plate, and is the most main noise during braking. The line mileage ratios of the rapid working condition, the urban working condition and the mountain working condition are 45%, 25% and 30%, respectively, and the brake test under the rapid working condition, the urban working condition and the mountain working condition specifically comprises: the light brake is applied in each direction of the forward/reverse straight, the forward/reverse left-turn and the forward/reverse right-turn, and Squeal brake noise and vehicle speed information when the light brake is applied are searched and recorded. The rapid working conditions comprise forward running of 60km/h, 70km/h and 80km/h lightly stepping braking, forward left turning and forward right turning of 35km/h and 45km/h lightly stepping braking; the urban working conditions comprise forward straight running 5km/h, 10km/h, 15km/h, 20km/h, 30km/h, 40km/h and 50km/h lightly stepping braking, forward left-turning and forward right-turning 5km/h, 10km/h, 15km/h, 20km/h and 25km/h lightly stepping braking, reverse straight running 5km/h, 10km/h, 15km/h, 20km/h and 25km/h lightly stepping braking, reverse left-turning and reverse right-turning 5km/h, 10km/h and 15km/h lightly stepping braking; the mountain area working conditions comprise forward straight running 10km/h, 15km/h, 20km/h, 30km/h, 35km/h, 40km/h and 45km/h and forward left turning and forward right turning and light stepping braking.
The corresponding speed and the advancing direction are consistent when friction plates made of different materials lightly step on braking, for example, the rubber-based friction plates advance straight for 60km/h, 70km/h and 80km/h under a rapid working condition, and advance straight for 30km/h, 40km/h and 50km/h under an urban working condition for lightly stepping on braking; the resin-based friction plate correspondingly moves straight for 60km/h, 70km/h and 80km/h under the rapid working condition, and moves straight for 30km/h, 40km/h and 50km/h under the urban working condition to lightly step on the brake.
And S4, acquiring Squeal noise weighted data of friction plates made of different materials according to Squeal braking noise and vehicle speed information under the rapid working condition, the urban working condition and the mountain working condition, and screening the optimal friction plates according to Squeal noise weighted data made of different materials.
The step S4 specifically includes:
step S41, squeal noise data of friction plates made of different materials under various working conditions are obtained:
Quick condition Squeal noise data= (Squeal noise decibel 11 vehicle speed 11 + Squeal noise decibel 12 vehicle speed 12 +). Squeal noise decibel 1N vehicle speed 1N)/(vehicle speed 11 +vehicle speed 12 +). Vehicle speed 1N), wherein if the corresponding noise of the vehicle speed 1N lightly stepping brake is not Squeal noise, the Squeal noise decibel 1N is assigned to 0;
Urban operating condition Squeal noise data= (Squeal noise decibel 21 vehicle speed 21 + Squeal noise decibel 22 vehicle speed 22 +), squeal noise decibel 2K vehicle speed 2K)/(vehicle speed 21 +vehicle speed 22 +). Vehicle speed 2K), wherein if the corresponding noise of vehicle speed 2K lightly stepping on the brake is not Squeal noise, squeal noise decibel 2K is assigned as 0;
Mountain condition Squeal noise data= (Squeal noise decibel 31 vehicle speed 31 + Squeal noise decibel 32 vehicle speed 32 +). Squeal noise decibel 3L vehicle speed 3L)/(vehicle speed 31 +vehicle speed 32 +). Vehicle speed 3L), wherein if the noise corresponding to the vehicle speed 3L lightly stepping brake is not Squeal noise, squeal noise decibel 3L is assigned to 0;
step S42, squeal noise weighted data of friction plates made of different materials are obtained:
Squeal noise weighted data = fast operating mode Squeal noise data x fast operating mode weight coefficient + city operating mode Squeal noise data x city operating mode weight coefficient + mountain area operating mode Squeal noise data x mountain area operating mode weight coefficient;
The fast working condition weight coefficient is the same as the fast working condition distance ratio, the city working condition weight coefficient is the same as the city working condition distance ratio, and the mountain working condition weight coefficient is the same as the mountain working condition distance ratio.
And S43, judging the numerical value of Squeal noise weighted data of friction plates made of different materials, and screening the optimal friction plate.
In summary, the invention searches and records the braking noise of the friction plates made of different materials under the rapid working condition, the urban working condition and the mountain working condition to obtain the braking noise data under the multidimensional, so that the test working condition is more close to the use working condition of the customer, the verification working condition is comprehensive, the use condition of the customer is fully simulated, and the actual use requirement of the user is met; the method has multiple application verification dimensions and high reliability, and the obtained brake noise data is coupled with Squeal brake noise and vehicle speed information, so that the brake noise data can fully reflect the performance of the friction plate at each speed, and the brake noise under different working conditions are organically combined together by giving weight coefficients to the different working conditions, thereby being convenient for screening the optimal friction plate.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
It will be apparent that the described embodiments are only some, but not all, embodiments of the application. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application for the embodiment. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The method for evaluating the braking noise of the light truck type is characterized by comprising the following steps of:
s1, selecting friction plates made of different materials;
S2, installing a sensor on the automobile, wherein the sensor at least comprises a speed, a temperature, noise data and brake vibration data for searching and recording the automobile;
s3, selecting a plurality of routes with wide places and quiet environment, respectively assembling friction plates made of different materials on an automobile, sequentially performing braking tests under a rapid working condition, an urban working condition and a mountain working condition, and searching and recording cold-state and hot-state Squeal braking noise and vehicle speed information in the braking process;
S4, acquiring Squeal noise weighted data of friction plates made of different materials according to Squeal braking noise and vehicle speed information under a rapid working condition, an urban working condition and a mountain working condition, and screening optimal friction plates according to Squeal noise weighted data made of different materials;
The line mileage ratios of the rapid working condition, the urban working condition and the mountain working condition in the step S3 are 45%, 25% and 30% respectively;
the step S4 specifically includes:
step S41, squeal noise data of friction plates made of different materials under various working conditions are obtained:
the rapid working condition Squeal noise data= (Squeal noise decibel 11 vehicle speed 11+squeal noise decibel 12 vehicle speed 12+,. Squeal noise decibel 1N vehicle speed 1N)/(vehicle speed 11+vehicle speed 12+,. Vehicle speed 1N), wherein if the noise corresponding to the light stepping brake of the vehicle speed 1N is not Squeal noise, the Squeal noise decibel 1N is assigned as 0;
Urban working condition Squeal noise data= (Squeal noise decibel 21 vehicle speed 21+squeal noise decibel 22 vehicle speed 22+. Squeal noise decibel 2K vehicle speed 2K)/(vehicle speed 21+vehicle speed 22+. Vehicle speed 2K), wherein if the noise corresponding to the light stepping brake of the vehicle speed 2K is not Squeal noise, the Squeal noise decibel 2K is assigned as 0;
The mountain area working condition Squeal noise data= (Squeal noise decibel 31 vehicle speed 31+squeal noise decibel 32 vehicle speed 32+. Squeal noise decibel 3L vehicle speed 3L)/(vehicle speed 31+vehicle speed 32+. Vehicle speed 3L), wherein if the noise corresponding to the light stepping brake of the vehicle speed 3L is not Squeal noise, the Squeal noise decibel 3L is assigned as 0;
step S42, squeal noise weighted data of friction plates made of different materials are obtained:
Squeal noise weighted data = fast operating mode Squeal noise + fast operating mode weighting coefficient + city operating mode Squeal noise + city operating mode weighting coefficient + mountain area operating mode Squeal noise + mountain area operating mode weighting coefficient;
And S43, judging the numerical value of Squeal noise weighted data of friction plates made of different materials, and screening the optimal friction plate.
2. The method for evaluating the braking noise of a light truck type according to claim 1, wherein the friction plate comprises a rubber-based friction plate, a resin-based friction plate, a carbon fiber friction plate and a semi-metallic friction plate.
3. The method for evaluating the braking noise of the light truck type according to claim 1, wherein the sensors in the step S2 at least comprise a vehicle speed sensor for recording the vehicle speed, a temperature sensor for recording the brake temperature, a vibration acceleration sensor for being mounted on the brake of the car, and a microphone sensor for recording noise data, and the microphone sensor is mounted in the middle position of the cockpit.
4. The method for evaluating the braking noise of a light truck type according to claim 1, wherein said step S3 is
The method specifically comprises the following steps:
The friction plates made of different materials are sequentially arranged on a test automobile, the test is sequentially carried out under the rapid working condition, the urban working condition and the mountain working condition according to different speeds, the light stepping braking is respectively carried out in each direction of the forward/backward straight running, the forward/backward left turning and the forward/backward right turning, and Squeal braking noise and vehicle speed information during the light stepping braking are searched and recorded.
5. The method for evaluating the braking noise of the light truck type according to claim 1, wherein the fast working condition weight coefficient is the same as the fast working condition path ratio, the city working condition weight coefficient is the same as the city working condition path ratio, and the mountain working condition weight coefficient is the same as the mountain working condition path ratio.
6. The method for evaluating the braking noise of the light truck type according to claim 4, wherein the rapid operating mode vehicle speed comprises forward running light stepping braking of 60km/h, 70km/h and 80km/h, forward left turning and forward right turning light stepping braking of 35km/h and 45 km/h.
7. The method for evaluating the braking noise of a light truck type according to claim 4, wherein the urban operating conditions include forward straight running 5km/h, 10km/h, 15km/h, 20km/h, 30km/h, 40km/h and 50km/h lightly stepping braking, forward left-turn and forward right-turn 5km/h, 10km/h, 15km/h, 20km/h and 25km/h lightly stepping braking, reverse straight running 5km/h, 10km/h, 15km/h, 20km/h and 25km/h lightly stepping braking, reverse left-turn and reverse right-turn 5km/h, 10km/h and 15km/h lightly stepping braking.
8. The method for evaluating the braking noise of the light truck type according to claim 4, wherein the mountain area working conditions comprise forward running light braking of 10km/h, 15km/h, 20km/h, 30km/h, 35km/h, 40km/h and 45km/h, forward left-turning and forward right-turning light braking of 10km/h, 15km/h and 20 km/h.
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| KR20110072585A (en) * | 2009-12-23 | 2011-06-29 | 한국타이어 주식회사 | How to evaluate brake noise |
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| CN109677390B (en) * | 2019-01-22 | 2020-05-22 | 一汽-大众汽车有限公司 | Rapid positioning method and system for brake squeal |
| CN115112224A (en) * | 2022-05-16 | 2022-09-27 | 中国第一汽车股份有限公司 | A test method for low-pitched braking noise of passenger cars |
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| KR20110072585A (en) * | 2009-12-23 | 2011-06-29 | 한국타이어 주식회사 | How to evaluate brake noise |
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| 基于摩擦片的冷态制动噪声对策方法研究;徐开学;《机械工程师》;20170310(第3期);49-53 * |
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