吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (5): 1513-1519.doi: 10.13229/j.cnki.jdxbgxb201605019

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Control design of the swash plate angle for hydraulic pump/motor based on FSMI method

SHEN Wei1, ZHANG Di-jia2, SUN Yi3, JIANG Ji-hai2   

  1. 1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093,China;
    2.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150080,China;
    3.Beijing Institute of Mechanical and Electrical Control Equipment, Beijing 100076,China
  • Received:2015-08-20 Online:2016-09-20 Published:2016-09-20

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Abstract: In order to reduce the throttling loss of the control circuit of the hydraulic hybrid excavator, the control pressure of the loop should be reduced. However, it would tend to deteriorate the control performance of the swash plate angle. Hence, the fee forward compensation combining with the sliding mode control based on the improved integral method (FSMI) is used to enhance the robust performance. First, the basic principle of the hydraulic hybrid excavator based on common pressure rail combined with switched function (HHES) is introduced and the necessity of reducing the control pressure is explained. Then, the improved mathematical model of the system is presented by analyzing the force applied on the swash plate; meanwhile, the FSMI is stated in details. Finally, the test rig is constructed corresponding to the simulation. Both of the simulation and experimental results show that the proposed method is effective and can enhance the robust performance of the system.

Key words: turn and control of fluid, control of the swash plate angle, feed forward compensation, sliding mode control

CLC Number: 

  • TH137
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