阀控对称液压缸电液位置伺服系统设计与故障模拟

Design and Fault Simulation on Electro-hydraulic Position Servo System with Valve Controlled Symmetric Hydraulic Cylinder

阀控对称液压缸电液位置伺服系统具有精度高、响应速度快等优点,一旦出现故障,难以定位其故障机理,且这对系统的正常运行造成极大影响。采用底层模块到高层模块的建模方式,基于软件AMESim进行阀控对称液压缸电液位置伺服系统模型设计。在模拟系统中设置好相关故障参数,该软件可得出系统关键控制部件的模拟仿真结果。分析表明,采用AMESim可模拟实际的阀控对称液压缸电液位置伺服系统故障,能得到相关主要的故障数据,模拟研究可减少了硬件条件下的实验的时间,提高监测故障经济性及诊断效率。

The electro-hydraulic position servo system of valve controlled symmetric hydraulic cylinder has the advantages of high precision and fast response speed. It is difficult to locate the fault meehanism on time if the system is out of order. It has a great impact on the normal operation in the system. The system model is designed based in AMESim through the modeling method of bottom module to high level module. The simulation system set up relevant fault parameters. The AMESim obtains the system simulation results. The analysis shows the AMESim can simulate and obtain the actual main system fault mechanism. The simulation research can reduce experiment time in the hardware, even can increase the economic efficiency in the fault monitoring and diagnosis.