吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (03): 564-570.doi: 10.7964/jdxbgxb201303002

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Control method of inlet valves for brake pressure fine regulation

CHU Liang1, WANG Yan-bo1, QI Fu-wei1, ZHANG Yong-sheng2   

  1. 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2. R&D Center, China FAW Group Corporation, Changchun 130011, China
  • Received:2012-03-13 Online:2013-05-01 Published:2013-05-01

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Abstract: To realize precise control of brake pressure, the current-response characteristic of high speed switching electromagnetic vale was studied. For brake pressure fine regulation, the characteristics of braking hydraulic system must be known. By results analysis of the static overflow and current dynamic response tests of inlet valve of Anti-lock Braking System (ABS), the static and dynamic characteristics of the inlet valve was obtained. Taking a pressurization rate control as example, a method of pressure fine regulation was expounded. Considering the method for wheel cylinder pressurization in ABS control, the characteristic test of inlet valves in hydraulic unit was proposed. This can provide guidance for production and assembly test of inlet valves. The characteristics of inlet valves are required to get a good consistency to ensure the portability of ABS software after calibration.

Key words: vehicle engineering, high speed switch electromagnetic valve, ABS, PWM, valve controllability

CLC Number: 

  • U463.52
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