舵机电位器的反馈位置误差补偿方法研究

舵机因电位器基准电压线性误差以及负载效应非线性误差等因素产生反馈位置误差,易造成导弹在发射、大机动飞行时控制效率降低,甚至影响到控制系统回路的稳定性。在电位器等效电路模型的基础上,对两类误差产生机理展开了深入研究,提出了一种舵机电位器的反馈位置误差补偿方法,实现了舵面偏角的有效修正。实验结果验证了该反馈位置误差补偿方法的正确性和有效性。

The Method of Feedback Position Error Compensation for Potentiometers in Actuator

The reference voltage linear error and load effect nonlinear error of potentiometers in actuator can generate feedback position error, resulting in the decrease of control efficiency or even the influence on the control system''s stability in missile launching or high maneuvering. In this paper, based on the equivalent circuit model of potentiometer, the mechanism of two kinds of errors is deeply studied, and a feedback position error compensation method of potentiometer for actuator is proposed, which can effectively correct the rudder deflection. Experimental results show that the feedback position error compensation method is correct and effective.