二次调节伺服加载系统的耦合影响

Coupling influence of servo loading system with secondary regulation

针对二次调节伺服加载系统,建立了数学模型,利用MATLAB仿真软件,对液压和机械耦合干扰下的系统控制性能进行了仿真研究。仿真结果表明,随着负载压力、输出转矩和输出转速的波动幅度的增大,系统的控制精度明显变差,转矩控制系统受负载压力波动的影响大于转速控制系统,转矩波动对转速控制系统的影响大于转速波动对转矩控制系统的影响。

The mathematical model is presented for the servo loading system with secondary regulation. Control performance under the disturbance of hydraulic and mechanical coupling is simulated with MATLAB. Simulation reveals that the increase of load pressure, output torque and rotational speed may deteriorate control precision. Load pressure fluctuation causes more influence on torque control system than on speed control system, while torque fluctuation causes more influence on speed control system than speed fluctuation does on torque control system.