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Mathematical Problems in Engineering
Volume 2016 (2016), Article ID 6379121, 10 pages
Research Article

Response Characteristics Analysis and Optimization Design of Load Sensing Variable Pump

College of Field Engineering, PLA University of Science and Technology, Nanjing 210007, China

Received 21 May 2016; Revised 1 August 2016; Accepted 14 August 2016

Academic Editor: Mohammed Nouari

Copyright © 2016 Hong-Xin Cui et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper aimed to decrease damping coefficient and enhance dynamic performance of the load sensing variable pump. Firstly, the working mechanism of the pump was analyzed and the dynamic model was built; hence it was concluded that the method to improve the system performance is to increase corner frequency of the first-order inertia elements. Then the simulation test rig of the load sensing variable pump was built with SimHydraulics software and was verified by simulation and experiments; the influence rules of main parameters on the system performance were studied by dynamic simulations. Finally, a structure optimization scheme was proposed; simulation results show that the response time of optimized system is 33.42% reduced and flow overshoot has fallen down from 8.9% to 1.6% compared with the original system.