Hardware-in-the-loop test platform of by-wire control pneumatic brake and testing method thereof

A pneumatic brake and test platform technology, applied in the testing of machine/structural components, vehicle testing, measuring devices, etc., can solve the problems of simulation analysis of the pneumatic brake system that cannot be controlled by wire, independent control of braking force, and braking response Long time and other issues

Pending Publication Date: 2019-05-31
JILIN UNIV
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  • Abstract
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Problems solved by technology

[0005] In the above technical solution, the in-the-loop test platform cannot perform hardware-in-the-loop simulation analysis on the air-by-wire air brake system, and cannot perform precise braking force control on the wheels on both sides of the same axle, that is, it cannot control the braking force of the four wheels of the vehicle. The power is controlled independently, and the braking response time is long

Method used

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  • Hardware-in-the-loop test platform of by-wire control pneumatic brake and testing method thereof
  • Hardware-in-the-loop test platform of by-wire control pneumatic brake and testing method thereof
  • Hardware-in-the-loop test platform of by-wire control pneumatic brake and testing method thereof

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specific Embodiment approach

[0079] In order to further set forth the technical scheme of the present invention and its working process, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0080] like figure 1 As shown, the present invention discloses a hardware-in-the-loop test platform for air-by-wire air brakes. The test platform includes: an air source component, an electronically controlled brake system, a traditional brake component, a wheel speed simulation component, a driving control component and a host computer 33.

[0081] The air source assembly includes: air compressor 1, wet air storage tank 2, air dryer 3, four-circuit protection valve 4, front axle brake air storage tank 5, rear axle brake air storage tank 6, parking brake air storage tank 7;

[0082] The electronically controlled braking system includes: dSPACE industrial computer 32, drive module 31, brake master valve 12, front axle dual-channel module 37 and rear axle ...

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Abstract

The invention provides a hardware-in-the-loop test platform of by-wire control pneumatic brake and testing method thereof. The test platform comprises a gas source assembly, an electric control brakesystem, a traditional brake assembly, a wheel speed simulation assembly, a driving control assembly and a host computer. The electric control brake system includes a dSPACE industrial personal computer, a drive module, a brake master valve, a front axle dual-channel module and a rear-axle dual-channel module. Each of the front axle dual-channel module and the rear-axle dual-channel module is formed by two groups of pressure charging valves, pressure reducing valves, and standby pressure valves that correspond to wheels at the two sides. The front axle dual-channel module is connected between afront axle brake air reservoir and two brake air chambers corresponding to the two front wheels by the brake master valve. In addition, the testing method includes steps of acceleration testing, braking testing and turning testing. According to the invention, the test platform is controlled by using the dSPACE industrial personal computer and the two dual-channel axle control modules are used forcontrolling braking forces of four wheels of the vehicle respectively and independently, thereby controlling the braking state of each wheel precisely.

Description

technical field [0001] The invention belongs to the technical field of hardware testing of electric passenger car brake systems, and in particular relates to a hardware-in-the-loop test platform and a test method for electric passenger car brake-by-wire pneumatic brakes based on the electronically controlled brake system, which is suitable for the control of ABS, EBS and ESC systems of commercial vehicles Strategy development and validation. Background technique [0002] With the development of highway construction, passenger cars occupy a large proportion of road transportation. However, due to the characteristics of heavy weight, high center of mass, and large passenger capacity, passenger cars are prone to side-slip and rollover accidents, resulting in serious casualties. and property damage. With the increasing application of electronic control systems in automobiles, the use of electronically controlled braking systems in passenger cars to improve vehicle safety has at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
Inventor 李静孟祥哲石求军刘鹏
Owner JILIN UNIV
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