CN112550262B - Health state diagnosis method and system for automobile brake system - Google Patents
Health state diagnosis method and system for automobile brake system Download PDFInfo
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- CN112550262B CN112550262B CN202011461167.XA CN202011461167A CN112550262B CN 112550262 B CN112550262 B CN 112550262B CN 202011461167 A CN202011461167 A CN 202011461167A CN 112550262 B CN112550262 B CN 112550262B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000036541 health Effects 0.000 title claims abstract description 23
- 238000003745 diagnosis Methods 0.000 title claims abstract description 22
- 230000002159 abnormal effect Effects 0.000 claims abstract description 17
- 230000005856 abnormality Effects 0.000 claims 1
- 230000003862 health status Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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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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Abstract
The invention relates to the technical field of automobile diagnosis, and provides a method for diagnosing the health state of an automobile brake system, which specifically comprises the following steps: s1, calculating the braking deceleration under the current braking; s2, calculating the attenuation value of the brake system based on the current braking deceleration; and S3, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal. According to the invention, the running state of the brake system is diagnosed, the attenuation degree of the brake system is calculated, and the owner is reminded to check in time after the brake attenuation is judged to be abnormal, so that safety accidents are reduced.
Description
Technical Field
The invention relates to the technical field of automobile diagnosis, and provides a method and a system for diagnosing the health state of an automobile brake system.
Background
Safety is always one of the bright spots concerned by customers for purchasing automobiles, and whether some key systems in the automobiles normally operate or not is of great importance to driving safety. For example, a brake system fails to operate, and serious safety accidents such as rear-end collision and the like can be caused. The brake system failure modes are various, but the brake system failure modes are not suddenly failed under most conditions, the phenomenon of abnormal brake performance attenuation is often accompanied in the early failure period, drivers with poor driving experience due to the performance attenuation cannot find the abnormal brake performance attenuation in time, and further traffic accidents are caused.
Disclosure of Invention
The invention provides a method and a system for diagnosing the health state of an automobile brake system, aiming at improving the problems.
The invention is realized in such a way, and the method for diagnosing the health state of the automobile brake system specifically comprises the following steps:
s1, calculating the braking deceleration under the current braking;
s2, calculating the attenuation value of the brake system based on the current brake deceleration;
and S3, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal.
Further, the vehicle currently in the braking state meets the following conditions, which are specifically as follows:
1) the braking travel of the brake pedal is greater than a travel threshold;
2) the braking duration of the brake pedal is less than a time threshold.
Further, before step S1, the method further includes:
it is detected whether the slip ratio of the road surface on which the vehicle is located is smaller than the slip ratio threshold value, and if the detection result is yes, step S1 is executed.
Further, before step S1, the method further includes:
and detecting whether the current vehicle speed is greater than a vehicle speed threshold value, and if so, executing step S1.
Further, before step S1, the method further includes:
and detecting whether the current vehicle speed is greater than a vehicle speed threshold value and whether the slip ratio of the road surface where the vehicle is located is smaller than a slip ratio threshold value, and if so, executing the step S1.
Further, the calculation method of the current braking deceleration is specifically as follows:
and calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration.
Further, the method for calculating the attenuation value of the braking system specifically comprises the following steps:
s31, when the vehicle leaves the factory, calibrating the braking deceleration of the braking system under different braking duration, different braking initial speeds and different pedal strokes;
s32, obtaining the braking deceleration of the factory under the current braking condition, wherein the current braking condition consists of the braking duration under the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
and S33, calculating a difference value between the factory brake deceleration and the current brake deceleration, wherein the ratio of the difference value to the factory brake deceleration is the attenuation value of the brake system.
The present invention is achieved as such, a health state diagnosis system of an automobile brake system, the system comprising:
the ABS/ESP vehicle body stability control system is in communication connection with the BCM vehicle body control module through a CGW central gateway;
and the BCM body control module diagnoses the attenuation agenda of the brake system based on the health state diagnosis method of the automobile brake system.
According to the invention, the running state of the brake system is diagnosed, the attenuation degree of the brake system is calculated, and the owner is reminded to check in time after the brake attenuation is judged to be abnormal, so that safety accidents are reduced.
Drawings
FIG. 1 is a schematic structural diagram of a health status diagnostic system for a brake system of an automobile according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for diagnosing a health status of a brake system of an automobile according to an embodiment of the present invention.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a health status diagnosis system of a brake system of an automobile according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown.
The system comprises:
the ABS/ESP vehicle body stability control system is in communication connection with the BCM vehicle body control module through a CGW central gateway;
the ABS or ESP vehicle body stability control system collects four wheel speed sensor signals, converts the wheel speed sensor signals into vehicle speed signals, and uploads the vehicle speed signals periodically through a CAN bus;
the BCM vehicle body control module acquires the stroke displacement of the brake pedal sensor, acquires the brake stroke of the brake pedal, judges whether a brake intention exists or not based on the brake stroke, calculates the brake deceleration and the attenuation value of the brake system if the judgment result is yes, and judges that the brake pedal is abnormally attenuated if the attenuation value of the brake system is continuously larger than the attenuation threshold value.
Fig. 2 is a flowchart of a method for diagnosing a health status of a brake system of an automobile according to an embodiment of the present invention, where the method specifically includes the following steps:
s1, calculating the braking deceleration under the current braking, namely the current braking deceleration;
when the vehicle is in a braking state, calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration.
S2, calculating the attenuation value of the brake system based on the current braking deceleration;
in the embodiment of the present invention, the method for calculating the attenuation value of the braking system specifically includes the following steps:
s21, when the vehicle leaves the factory, calibrating the braking deceleration of the braking system under different braking duration, different braking initial speeds and different pedal strokes;
the automobile brakes at a certain initial speed, and the braking performance index of the automobile is evaluated through the deceleration in unit time. Factory parameter calibration: and (4) calibrating a simulated dry road (the slip ratio is 0.25), stepping the brake pedal to a certain stroke in unit time (T is 100 ms-500 ms), and calculating the deceleration of the vehicle.
Assuming that the vehicle is running at a constant speed of 50km/h with an initial speed V1, when the pedal depression stroke reaches 50% within T500 ms, the vehicle instantaneous speed at this time is reduced to V2, the braking deceleration is a (V1-V2)/500ms, and the factory braking deceleration under the current braking condition is a34, see table 1.
Similarly, the deceleration rates corresponding to T of 100ms to 500ms (100ms, 150ms, 200ms, 250ms, 300ms, 350ms, 400ms, 450ms, and 500ms) can be calibrated.
Table 1 factory brake deceleration table when T is 500ms
S22, obtaining the braking deceleration of the factory under the current braking condition, wherein the current braking condition consists of the braking duration of the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
in the embodiment of the invention, the braking duration, the vehicle speed at the braking start time or the brake pedal stroke under the current braking condition may not be sampling points in the table, the table is looked up based on the principle of proximity, if the vehicle speed at the braking start time is 53Km/h, the table is looked up according to 50Km/h, if the brake pedal stroke is 58%, the table is looked up according to 60%, and if the braking duration T is 268ms, the table is looked up according to T300 ms.
And S23, calculating a difference value between the factory brake deceleration and the current brake deceleration, wherein the ratio of the difference value to the factory brake deceleration is the attenuation value of the brake system.
And S3, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal. And after setting an attenuation threshold interval (30%) and 10 continuous attenuation times (the specific threshold interval and times can be calibrated), judging that the attenuation of the brake system is abnormal.
In the second embodiment of the invention, the method for diagnosing the health state of the automobile brake system specifically comprises the following steps:
and S1, judging whether the current vehicle is in a braking state, if so, executing a step S2, and if not, exiting the automobile braking system health state diagnosis process.
In the embodiment of the invention, the vehicle is judged to be in the braking state when the following conditions are met, wherein the following conditions are specifically adopted:
1) the braking stroke of the brake pedal is greater than a stroke threshold, e.g., the braking stroke of the brake pedal is greater than 50%;
2) the duration of braking of the brake pedal being less than a time threshold, e.g. 500ms
S2, calculating the braking deceleration at the current braking, namely the braking deceleration for short;
when the vehicle is in a braking state, calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration.
S3, calculating the attenuation value of the brake system;
in the embodiment of the present invention, the method for calculating the attenuation value of the braking system specifically includes the following steps:
s31, when the vehicle leaves the factory, calibrating the braking deceleration of the braking system under different braking duration, different braking initial speeds and different pedal strokes;
s32, obtaining the braking deceleration of the factory under the current braking condition, wherein the current braking condition consists of the braking duration under the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
in the embodiment of the invention, the braking duration under the current braking condition, the vehicle speed at the braking starting time or the brake pedal travel may not be sampling points in the table, the table is looked up based on the principle of proximity, if the vehicle speed at the braking starting time is 53Km/h, the table is looked up according to 50Km/h, if the brake pedal travel is 58%, the table is looked up according to 60%, and if the braking duration T is 268ms, the table is looked up according to T300 ms.
And S33, calculating a difference value between the factory brake deceleration and the current brake deceleration, wherein the ratio of the difference value to the factory brake deceleration is the attenuation value of the brake system.
And S4, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal.
In the third embodiment of the present invention, the road surface slip rate of a dirt road and a sand road is high, and the diagnosis accuracy is low when the health status of the vehicle brake system is diagnosed under the road condition, so that when it is detected that the vehicle is currently in the brake state, it is necessary to further judge whether the slip rate of the current road surface meets the requirement, and therefore, the health status diagnosis method of the vehicle brake system provided in the embodiment of the present invention specifically includes the following steps:
s1, judging whether the current vehicle is in a braking state, if so, executing a step S2, and if not, exiting the automobile braking system health state diagnosis process;
in the embodiment of the invention, the vehicle is judged to be in the braking state when the following conditions are met, wherein the following conditions are specifically adopted:
1) the braking stroke of the brake pedal is greater than a stroke threshold, e.g., the braking stroke of the brake pedal is greater than 50%;
2) the duration of the braking of the brake pedal is less than a time threshold, for example 500 ms.
S2, detecting whether the slip rate of the road surface where the vehicle is located is smaller than a slip rate threshold value (the slip rate threshold value is set to be 0.3), if so, executing a step S3, and if not, exiting the automobile brake system health state diagnosis process;
s3, calculating the braking deceleration under the current braking, namely the current braking deceleration;
when the vehicle is in a braking state, calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration.
S4, calculating the attenuation value of the brake system;
in the embodiment of the present invention, the method for calculating the attenuation value of the braking system specifically includes the following steps:
s41, when the vehicle leaves a factory, calibrating the braking deceleration of the braking system under different braking time lengths, different braking initial speeds and different pedal strokes;
s42, obtaining the braking deceleration of the factory under the current braking condition, wherein the current braking condition consists of the braking duration under the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
in the embodiment of the invention, the braking duration under the current braking condition, the vehicle speed at the braking starting time or the brake pedal travel may not be sampling points in the table, the table is looked up based on the principle of proximity, if the vehicle speed at the braking starting time is 53Km/h, the table is looked up according to 50Km/h, if the brake pedal travel is 58%, the table is looked up according to 60%, and if the braking duration T is 268ms, the table is looked up according to T300 ms.
And S43, calculating a difference value between the factory brake deceleration and the current brake deceleration, wherein the ratio of the difference value to the factory brake deceleration is the attenuation value of the brake system.
And S5, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal.
In the fourth embodiment of the present invention, when the health status of the brake system of the vehicle is diagnosed at a low vehicle speed, there is a problem of a large diagnosis deviation, and therefore, when it is detected that the vehicle is currently in the brake state, it is necessary to further determine whether the current vehicle speed meets the requirement, and therefore, the health status diagnosis method of the brake system of the vehicle provided in the embodiment of the present invention specifically includes:
s1, judging whether the current vehicle is in a braking state, if so, executing a step S2, and if not, exiting the automobile braking system health state diagnosis process;
in the embodiment of the invention, the vehicle is judged to be in the braking state when the following conditions are met, wherein the following conditions are specifically adopted:
1) the braking stroke of the brake pedal is greater than a stroke threshold, e.g., the braking stroke of the brake pedal is greater than 50%;
2) the braking duration of the brake pedal is less than a time threshold, for example 500 ms.
S2, detecting whether the current vehicle speed is greater than a vehicle speed threshold (the vehicle speed threshold is set as 50Km/h), if so, executing a step S3, and if not, exiting the vehicle brake system health state diagnosis process;
s3, calculating the braking deceleration under the current braking, namely the current braking deceleration for short;
when the vehicle is in a braking state, calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration.
S4, calculating the attenuation value of the brake system;
in the embodiment of the present invention, the method for calculating the attenuation value of the braking system specifically includes the following steps:
s41, when the vehicle leaves the factory, calibrating the braking deceleration of the braking system under different braking duration, different braking initial speeds and different pedal strokes;
s42, obtaining the braking deceleration rate of the factory under the current braking condition, wherein the current braking condition consists of the braking duration under the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
s42, calculating a difference value between the braking deceleration at the time of factory shipment and the current braking deceleration, wherein the ratio of the difference value to the braking deceleration at the time of factory shipment is an attenuation value of the brake system;
in the embodiment of the invention, the braking duration under the current braking condition, the vehicle speed at the braking starting time or the brake pedal travel may not be sampling points in the table, the table is looked up based on the principle of proximity, if the vehicle speed at the braking starting time is 53Km/h, the table is looked up according to 50Km/h, if the brake pedal travel is 58%, the table is looked up according to 60%, and if the braking duration T is 268ms, the table is looked up according to T300 ms.
And S5, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal.
The fifth embodiment of the present invention is a combination of the third embodiment and the fourth embodiment, that is, when it is detected that the vehicle is currently in the braking state, it is further determined whether the slip ratio of the current road surface and the current vehicle speed meet the requirements, so the method for diagnosing the health state of the vehicle braking system provided in the embodiment of the present invention specifically includes the following steps:
s1, judging whether the current vehicle is in a braking state, if so, executing a step S2, and if not, exiting the automobile braking system health state diagnosis process;
s2, detecting whether the current vehicle speed is greater than a vehicle speed threshold (the vehicle speed threshold is 50Km/h) and whether the slip rate of the road surface where the vehicle is located is smaller than a slip rate threshold (the slip rate threshold is 0.3), if the detection result is yes, executing a step S3, and if the detection result is no, exiting the automobile brake system health state diagnosis process;
s3, calculating the braking deceleration under the current braking, namely the current braking deceleration;
when the vehicle is in a braking state, calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration.
S4, calculating the attenuation value of the brake system;
in the embodiment of the invention, the method for calculating the attenuation value of the brake system specifically comprises the following steps:
s41, when the vehicle leaves a factory, calibrating the braking deceleration of the braking system under different braking time lengths, different braking initial speeds and different pedal strokes;
s42, obtaining the braking deceleration of the factory under the current braking condition, wherein the current braking condition consists of the braking duration under the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
in the embodiment of the invention, the braking duration under the current braking condition, the vehicle speed at the braking starting time or the brake pedal travel may not be sampling points in the table, the table is looked up based on the principle of proximity, if the vehicle speed at the braking starting time is 53Km/h, the table is looked up according to 50Km/h, if the brake pedal travel is 58%, the table is looked up according to 60%, and if the braking duration T is 268ms, the table is looked up according to T300 ms.
And S43, calculating a difference value between the braking deceleration at the time of factory shipment and the current braking deceleration, wherein the ratio of the difference value to the braking deceleration at the time of factory shipment is the attenuation value of the brake system.
And S5, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal.
In the sixth embodiment of the present invention, on the basis of the first to fifth embodiments, when the attenuation of the brake system is determined to be abnormal, the operation control unit is not limited to the BCM body control module, and may also be another module or cloud in the entire vehicle, and reminds the customer to perform the brake check through various ways:
a) after the instrument receives the abnormal attenuation signal of the brake system, text or voice prompt is carried out;
b) after the TBOX receives the abnormal attenuation signal of the brake system, carrying out text or voice pushing on APPs such as a mobile phone, a bracelet and a watch;
c) the diagnostic device reads the specific relevant historical data DTC via the OBD.
According to the invention, the running state of the brake system is diagnosed, the attenuation degree of the brake system is calculated, and the owner is reminded to check in time after the brake attenuation is judged to be abnormal, so that safety accidents are reduced.
FIG. 1 illustrates the labeling:
ABS is Antilock Brake System; electronic Stability Program (ESP), a vehicle body Stability control system; BCM Body Control Module; ICM Instrument Communications Manager Instrument Cluster instruments; TBOX is a Telematics BOX vehicle networking controller; OBD is an On Board Diagnostics automobile fault diagnosis system; CGW is a Central Gateway of Central Gateway; powertrain CAN: a power system CAN bus; body CAN: a vehicle body system CAN bus; infotaine CAN: a sound entertainment system CAN bus; diagnosis CAN: the diagnostic system CAN.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (5)
1. A health state diagnosis method of an automobile brake system is characterized by specifically comprising the following steps:
s1, calculating the braking deceleration under the current braking;
s2, calculating the attenuation value of the brake system based on the current braking deceleration;
s3, if the attenuation value of the brake system is continuously larger than the attenuation threshold value, judging that the attenuation of the brake system is abnormal;
the vehicle in the current braking state meets the following conditions, which are specifically as follows:
1) the braking travel of the brake pedal is greater than a travel threshold;
2) the braking duration of the brake pedal is less than a time threshold;
the method for calculating the current braking deceleration is specifically as follows:
calculating the speed difference between the vehicle speed at the braking starting moment and the braking ending moment, wherein the ratio of the speed difference to the braking duration is the current braking deceleration;
the method for calculating the attenuation value of the brake system specifically comprises the following steps:
s31, when the vehicle leaves the factory, calibrating the braking deceleration of the braking system under different braking duration, different braking initial speeds and different pedal strokes;
s32, obtaining the braking deceleration of the factory under the current braking condition, wherein the current braking condition consists of the braking duration under the current braking operation, the vehicle speed at the braking starting moment and the travel of a brake pedal;
and S33, calculating a difference value between the factory brake deceleration and the current brake deceleration, wherein the ratio of the difference value to the factory brake deceleration is the attenuation value of the brake system.
2. The method for diagnosing the state of health of a brake system of a vehicle as claimed in claim 1, further comprising, before step S1:
and detecting whether the slip ratio of the road surface on which the vehicle is located is smaller than a slip ratio threshold value, and if so, executing step S1.
3. The method for diagnosing the state of health of a brake system of a vehicle as claimed in claim 1, further comprising, before step S1:
and detecting whether the current vehicle speed is greater than a vehicle speed threshold value, and if so, executing step S1.
4. The method for diagnosing the state of health of a brake system of a vehicle as claimed in claim 1, further comprising, before step S1:
and detecting whether the current vehicle speed is greater than a vehicle speed threshold value and whether the slip ratio of the road surface where the vehicle is located is smaller than a slip ratio threshold value, and if so, executing the step S1.
5. A state of health diagnostic system for a vehicle braking system, the system comprising:
the ABS or ESP vehicle body stability control system is provided with a brake pedal sensor on a brake pedal, the BCM vehicle body control module is in communication connection with the brake pedal sensor, and the ABS or ESP vehicle body stability control system is in communication connection with the BCM vehicle body control module through a CGW central gateway; the BCM body control module diagnoses the attenuation abnormality of the brake system based on the health state diagnosis method of the brake system of the automobile according to any one of claims 1 to 4.
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| CN113222187B (en) * | 2021-04-15 | 2024-05-03 | 中通服咨询设计研究院有限公司 | Intelligent monitoring method for brake health of shared power-assisted vehicle |
| CN113335258A (en) * | 2021-07-15 | 2021-09-03 | 安徽江淮汽车集团股份有限公司 | Brake pedal feel improving method |
| CN114776742B (en) * | 2022-04-27 | 2023-06-30 | 江西五十铃汽车有限公司 | Replacement reminding method and system for automobile brake pads based on Internet of vehicles platform |
| CN114715111B (en) * | 2022-05-07 | 2023-01-13 | 交通运输部公路科学研究所 | Freight vehicle brake temperature estimation method based on TBOX |
| CN114572180B (en) * | 2022-05-09 | 2022-10-14 | 所托(杭州)汽车智能设备有限公司 | Vehicle braking diagnosis method and device, electronic device and medium |
| CN116952612A (en) * | 2023-07-26 | 2023-10-27 | 山东北骏重工有限公司 | Large-scale underground dumper brake safety evaluation system based on artificial intelligence |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001206218A (en) * | 2000-01-20 | 2001-07-31 | Fuji Heavy Ind Ltd | Brake fade alarm device for vehicle, traveling control device for a/t vehicle, and traveling control device for electric vehicle |
| KR20170104225A (en) * | 2016-03-07 | 2017-09-15 | 현대자동차주식회사 | Method for fade detecting and compensation in braking |
| CN109466533A (en) * | 2018-11-26 | 2019-03-15 | 北汽福田汽车股份有限公司 | The detection method and device of vehicle and its braking system |
| CN111361413A (en) * | 2020-02-20 | 2020-07-03 | 南京工程学院 | Vehicle running detection control system and method |
| CN111976702A (en) * | 2020-07-29 | 2020-11-24 | 北京车和家信息技术有限公司 | Vehicle control method, device, equipment and computer readable storage medium |
| CN112158187A (en) * | 2020-09-17 | 2021-01-01 | 中国第一汽车股份有限公司 | Deceleration control method under brake disc heat fading working condition |
-
2020
- 2020-12-11 CN CN202011461167.XA patent/CN112550262B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001206218A (en) * | 2000-01-20 | 2001-07-31 | Fuji Heavy Ind Ltd | Brake fade alarm device for vehicle, traveling control device for a/t vehicle, and traveling control device for electric vehicle |
| KR20170104225A (en) * | 2016-03-07 | 2017-09-15 | 현대자동차주식회사 | Method for fade detecting and compensation in braking |
| CN109466533A (en) * | 2018-11-26 | 2019-03-15 | 北汽福田汽车股份有限公司 | The detection method and device of vehicle and its braking system |
| CN111361413A (en) * | 2020-02-20 | 2020-07-03 | 南京工程学院 | Vehicle running detection control system and method |
| CN111976702A (en) * | 2020-07-29 | 2020-11-24 | 北京车和家信息技术有限公司 | Vehicle control method, device, equipment and computer readable storage medium |
| CN112158187A (en) * | 2020-09-17 | 2021-01-01 | 中国第一汽车股份有限公司 | Deceleration control method under brake disc heat fading working condition |
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