吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 1817-1824.doi: 10.13229/j.cnki.jdxbgxb201506013

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Mathematical modeling and simulation of load-sensing priority valve

LIU Xin-hui1,2, LI Qian-wen1, CHEN Jin-shi1,3, ZHANG Peng1, NIU Ping-jie1   

  1. 1.School of Mechanical Science and Engineering, Jilin University, Changchun 130022, China;
    2.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    3.Guangxi LiuGong Machinery Co.,Ltd,Liuzhou 545007,China
  • Received:2014-06-06 Online:2015-11-01 Published:2015-11-01

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Abstract: The structure and working principles of the load-sensing static signal priority vale are analyzed in this paper. By establishing the complete mathematical model and creating a block diagram of the system, the parameters, which have large impact on the steering flow response, are quantitatively analyzed, and the AMESim simulation model is established. The response of the steering flow under different input conditions is quantitatively investigated through dynamic simulation, and the key structure parameters are optimized. Comparison of simulation and experiment results shows that the model is accurate. Simulation results demonstrate that the sizes of the orifices of priority vale LS and damper S have huge influence on the response of the steering flow and increasing diameters appropriately can improve the system performance.

Key words: fluid power transmission and control, full hydraulic steering system, load-sensing, priority valve, dynamic characteristic, AMESim model

CLC Number: 

  • TH137.5
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