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WANG Jian-qiang, YANG Bo, LI Sheng-bo, LI Ke-qiang. Pneumatic electronic assistant brake device based on high-speed on/off valve[J]. Journal of Traffic and Transportation Engineering, 2011, 11(4): 61-67. doi: 10.19818/j.cnki.1671-1637.2011.04.010
Citation: WANG Jian-qiang, YANG Bo, LI Sheng-bo, LI Ke-qiang. Pneumatic electronic assistant brake device based on high-speed on/off valve[J]. Journal of Traffic and Transportation Engineering, 2011, 11(4): 61-67. doi: 10.19818/j.cnki.1671-1637.2011.04.010
shu

Pneumatic electronic assistant brake device based on high-speed on/off valve

doi: 10.19818/j.cnki.1671-1637.2011.04.010

  • State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China

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  • Author Bio:

    WANG Jian-qiang(1972-), male, associate professor, PhD, +86-10-62795774, wjqlws@tsinghua.edu.cn

  • Received Date: 2011-03-16
  • Publish Date: 2011-08-25
    Abstract
  • In order to satisfy the demands of automatic braking in longitudinal driving assistance systems for commercial vehicles, a pneumatic electronic assistant brake device was developed based on high-speed on/off valves. Its mathematical model was built, and a PI controller with resistance integral saturation was designed. High-speed on/off valves were regulated dynamically by using pulse width modulation method, and the brake pressure of vehicle was controlled actively. The hardware-in-the-loop platform of pneumatic electronic assistant brake device was developed, and its control performance was verified. Analysis result shows that the device can respond to brake command fast and accurately, its stable error and response time are less than 0.01 MPa and 0.3 s respectively. While it is easy to be fixed, and has good compatibility with the braking system of commercial vehicle.

     

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