【摘要】 针对二次调节伺服加载试验台转速控制系统 ,分析了参数变化和耦合干扰对系统控制性能的影响。仿真结果表明 ,系统等效转动惯量和等效阻尼系数的变化以及负载压力和加载转矩的波动干扰 ,对系统控制性能的影响较大。为了消除系统参数变化和耦合干扰的影响 ,利用动态鲁棒补偿方法 ,即在PID控制基础上 ,加入归零因子环节和低通滤波器 ,对转速控制系统进行改进 ,使系统获得了很强的鲁棒性 ,大大地提高了系统的控制性能。更多还原

【Abstract】 The influence of parameter changes and coupling disturbances on control property was analyzed in the rotational speed control system of the servo loading test equipment with secondary regulation.Simulation results reveal that equivalent rotational inertia,damping factor,fluctuating loading pressure and loading torque has comparatively large influence on control properties.In order to eliminate the deteriorating effect of parameter changes and coupling disturbances,dynamic robust compensation is featured which,on the basis of PID control,has exploited return-to-zero factor and low-pass filter and has actually improved the rotational speed control system and raised its robustness.更多还原