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Fault diagnosis device and method for giant magnetostrictive brake-by-wire system

A giant magnetostrictive and brake-by-wire technology, which is applied in the field of vehicle fault diagnosis, can solve the problems of no diagnosis of multiple fault causes, and that the giant magnetostrictive brake-by-wire system does not have a fault diagnosis device and method. , the effect of improving the accuracy

Active Publication Date: 2021-08-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] However, in the existing technology, only the fault diagnosis of the brake circuit fault and the brake switch sticking are carried out, and there is no diagnosis of various fault causes; the giant magnetostrictive brake-by-wire system does not yet have a fault diagnosis device and method, it is necessary A fault diagnosis method for the brake-by-wire system is proposed, so as to solve the fault troubleshooting problem when the brake failure occurs, and play a basic role in the subsequent fault-tolerant control

Method used

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Embodiment Construction

[0079] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0080] A fault diagnosis device for a giant magnetostrictive brake-by-wire system of the present invention is a disc-type brake-by-wire system based on giant magnetostrictive materials. The system includes: a brake pedal module 4, a left front brake 2, a right front brake 16, a left Rear brake 9, right rear brake 10, left front wheel 1, right front wheel 15, left rear wheel 7, right rear wheel 11, control module (ECU) 6, power supply (POWER) 5 and current regulation module (CRM) 13, such as figure 1 shown;

[0081] The brake pedal module 4 is used to receive the driver's braking signal, and while feeding back the pedal feeling to the driver, it transmits braking information to the control mo...

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Abstract

The invention discloses a giant magnetostrictive brake-by-wire system fault diagnosis device and method. The giant magnetostrictive brake-by-wire system fault diagnosis device comprises a brake state detection unit, a brake action detection unit, a current detection unit, a brake displacement detection unit, a brake displacement transmission detection unit, a tire detection unit and a calculation unit. On the basis of the giant magnetostrictive brake-by-wire system, various sensors are used for detecting components of each brake system in the braking process, and then faults are diagnosed based on sensor data; the device is easy to integrate with an existing giant magnetostrictive brake-by-wire system, and is easy to realize.

Description

technical field [0001] The invention belongs to the technical field of vehicle fault diagnosis, and in particular relates to a fault diagnosis device and method for a giant magnetostrictive brake-by-wire system. Background technique [0002] The braking of the vehicle directly affects the traffic safety and guarantees the life and property safety of the driver and pedestrians. Fast and effective braking effect is very important to the overall performance and working status of the car. Therefore, in order to avoid the braking failure of the braking system, it is necessary to diagnose and locate the fault in time and accurately, and carry out troubleshooting to ensure driving safety. [0003] The existing research on fault diagnosis of brake system lacks the research on fault diagnosis of brake-by-wire system. The Chinese invention patent application number is CN110733489A, and the patent name is "a vehicle brake fault diagnosis device and its method". The invention discloses...

Claims

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Application Information

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IPC IPC(8): G01M17/007G01D21/02
CPCG01M17/007G01D21/02
Inventor 朱耀鎏孟琦康曹铭纯于博洋张自宇周小川赵万忠王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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