中文摘要：

为了电液伺服系统解决泵控高效节能性与阀控快速响应性及控制精度高不兼容的特性,搭建基于变频调速的泵阀联合系统。首先对泵阀联合控制系统做模型分析,为了改善系统的节能性,建立基于变频调速的泵控回路。同时运用模糊PID控制算法设计压力控制器,实时监控泵口压力,平稳快速的调节电机转速。为了提高液压缸位置精度,阀控回路设计前馈补偿PID控制,对液压缸位移实时追踪。通过AMEsim与Simulink的联合仿真,表明泵阀联合控制系统相比传统的电液比例伺服系统响应速度更快,控制精度更高,节能性明显得到提升。

英文摘要：

In order to solve pump control electro-hydraulic servo system efficiency and fast valve control incompatible characteristics such as high accuracy,builds the pump valve combination system based on frequency control of motor speed. First to establish the mathematical model of control system of pump valve,in view of the energy system,based on frequency control of motor speed pump control circuits,and design pressure of the fuzzy PID controller,real-time monitoring of the pump inlet pressure,steady and rapid adjusting the motor speed. In order to improve the hydraulic cylinder position accuracy,valve control circuit design PID control,the feedforward compensation for the hydraulic cylinder displacement real time tracking. Combined with simulink through AMEsim simulation,shows that control system of pump valve compared with the traditional electro-hydraulic proportional servo system with fast responsiveness,higher control precision,energy-saving significantly improve.