电动变桨伺服系统中的电机参数变动以及外部扰动等因素都会降低PID闭环控制系统的性能.简要介绍了串励直流电机的数学模型,提出了一种基于自抗扰控制器的变桨电机伺服控制方法,并将二阶自抗扰控制器应用到变桨伺服控制中.基于Matlab/Simulink仿真平台验证了该方法的有效性.仿真结果表明,基于自抗扰控制器的电动变桨伺服系统具有较好的动态和稳态性能,对系统内部参数变动和外部扰动都具有较强的鲁棒性.%In the electrical pitch control servo system, the variation of the motor parameters and external disturbance will reduce the performance of the closed - loop PID control system. First, the mathematics model of series-excited DC motor was briefly introduced and a novel control method of the pitch motor servo control based on active disturbances rejection controller (ADRC) was proposed. A second order ADRC was applied to the pitch servo control, and its validity was verified by Matlab/Simulink simulation. Simulation results show electrical pitch servo system based on proposed method has good dynamic and static performance and strong robustness to the variation of system internal parameters and external disturbance.
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