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Volume 41 Issue 11
Nov.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(11): 2010-2016.
JIANG Hong, YANG Yongfu, YU Pengfei, et al. Vehicle height adjustment of closed-loop air circuit laterally interconnected air suspension system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(11): 2010-2016. doi: 10.13700/j.bh.1001-5965.2014.0759(in Chinese)
Citation: JIANG Hong, YANG Yongfu, YU Pengfei, et al. Vehicle height adjustment of closed-loop air circuit laterally interconnected air suspension system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(11): 2010-2016. doi: 10.13700/j.bh.1001-5965.2014.0759(in Chinese)
shu

Vehicle height adjustment of closed-loop air circuit laterally interconnected air suspension system

doi: 10.13700/j.bh.1001-5965.2014.0759
  • 1.

    School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

  • 2. Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013

  • 3. Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China

  • Received Date: 03 Dec 2014
  • Rev Recd Date: 15 Jan 2015
  • Publish Date: 20 Nov 2015
    Abstract
  • In order to further improve the dynamic and energy-economic performance of air suspension, a closed-loop air circuit laterally interconnected air suspension structure which combines the advantages of both interconnected air suspension system and closed-loop air circuit air suspension height control system with high and low pressure chambers was proposed. In order to deal with the portability defects caused by traditional air suspension height control strategy when it's applied to the interconnected suspension system, a special proportion integration differentiation-pulse-width modulation (PID-PWM) height control strategy designed for laterally interconnected air suspension was proposed and a corresponding mathematical model was established for simulation study via MATLAB/Simulink. The simulation results show that the control strategy works effectively, the overshoot phenomenon is avoided and the portability defects have been solved. A height adjustment experiment is carried out on a test bench and the impact of different initial pressure of gas chamber on the charging/discharging time as well as the control error during the vehicle height adjustment were studied. The experimental results show that the control strategy for the closed-loop air circuit laterally interconnected air suspension system can adjust the vehicle body height rapidly and accurately. The correctness of the mathematical model and the validity of control strategy are verified. The study about the impact of gas chamber initial pressure provides a theoretical basis for the setting of the vehicle height adjustment system parameters.

     

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