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为了提高折臂式随车起重机(多执行器)液压系统的稳定性和操控性,使系统即具有合理的流量匹配特性和良好的复合动作特性,系统采用负载敏感(LS)压力补偿(PC)控制,并分析了LSPC控制系统的控制原理及特性。通过建立AMESim仿真模型,研究了在典型工况下折臂式随车起重机LSPC控制系统的动态特性、抗流量饱和性和负载独立流量分配特性。结果表明,采用阀后补偿的LSPC控制系统后,避免了各执行机构之间的冲突,提高了操控性,在工程上具有一定的参考价值。
In order to improve the stability and controllability of the hydraulic system of the arm-type truck crane (multi-actuator), the system has reasonable flow matching characteristics and good complex operating characteristics. The system adopts load-sensitive (LS) pressure compensation Control, and analyzed the control principle and characteristics of LSPC control system. By establishing the AMESim simulation model, the dynamic characteristics, flow resistance saturation and load independent flow distribution characteristics of the LSPC control system of arm-type truck crane under typical working conditions are studied. The results show that the LSPC control system with post-valve compensation can avoid the conflicts among the actuators and improve the maneuverability, so it has a certain reference value in engineering.