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Vehicle line control hydraulic brake system hardware-in-the-loop test bed

A technology of hydraulic braking and system hardware, which is used in vehicle testing, machine/structural component testing, measuring devices, etc., and can solve the problems of low rapid pressure build-up speed, insufficient test bench detection accuracy, and large steady-state error.

Active Publication Date: 2017-07-21
JILIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to meet the needs of the society, to make up for the problems of insufficient detection accuracy of existing test benches, too low rapid pressure build-up speed, and excessive steady-state error, and to provide a hardware-in-the-loop test for vehicle-by-wire hydraulic braking systems. tower

Method used

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  • Vehicle line control hydraulic brake system hardware-in-the-loop test bed
  • Vehicle line control hydraulic brake system hardware-in-the-loop test bed
  • Vehicle line control hydraulic brake system hardware-in-the-loop test bed

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Embodiment Construction

[0047] The present invention is described in detail below in conjunction with accompanying drawing:

[0048] refer to figure 1 , the present invention provides a hardware-in-the-loop test bench for a vehicle-by-wire hydraulic braking system. The technical problem to be solved is to ensure that the test bench has good real-time performance, and can realize vehicle models and control algorithm models under different working conditions. , the data interaction between the wire-controlled hydraulic braking system and sensor signals, and analyze the response characteristics of the solenoid valve and the dynamic response characteristics of the wheel cylinder increase and decrease stages through simulation analysis and other means. It is also necessary to ensure that the test bench can quickly build pressure 10MPa , The pressure building time is less than 170ms, and the precise pressure control accuracy is less than 0.08MPa.

[0049] In order to solve the above technical problems, th...

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Abstract

The invention discloses a vehicle line control hydraulic brake system hardware-in-the-loop test bed in order to solve the problem that with respect to an existing test bed, the detection precision is poor, the rapid pressure-buildup speed is too low and the steady-state error is too large. The vehicle line control hydraulic brake system hardware-in-the-loop test bed comprises a real-time platform and a line control hydraulic brake system, the real-time platform comprises a host computer and a data acquisition and exploitation system, and the host computer is in bus connection with the data acquisition and exploitation system; and the line control hydraulic brake system comprises a test sensing system, an experiment table basal body and a brake system execution mechanism. The experiment table basal body is installed on the foundation through a support platform, a left front-wheel brake, a right front-wheel brake, a left rear-wheel brake and a right rear-wheel brake of the experiment table basal body are installed on the support platform, and the test sensing system is connected with the four wheel brakes through brake hard tubes; the test sensing system is connected with the data acquisition and exploitation system through a wire; and the brake system execution mechanism is connected with the test sensing system through a brake hard tube, and the brake system execution mechanism is connected with the data acquisition and exploitation system through a wire.

Description

technical field [0001] The invention relates to a hardware-in-the-loop simulation test bench, more precisely, the invention relates to a hardware-in-the-loop test bench for a vehicle-by-wire hydraulic braking system. Background technique [0002] With the improvement of automotive technology and the application and development of electronic technology in the automotive field, intelligence and electronics are the future research and development trends and directions in the automotive field, and wire-control technology with fast response characteristics, high efficiency, and energy saving will gradually replace traditional technologies. Applied to various parts of the car. The control-by-wire hydraulic braking system can significantly improve the response speed and response characteristics when the wheel cylinder pressure is quickly built up, and improve the vehicle's driving safety and handling stability while improving the vehicle's dynamic characteristics. The brake-by-wir...

Claims

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Application Information

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IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 李静王晨孙禄夏承贺
Owner JILIN UNIV
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