将Levy法引入到导弹气动舵机的建模中,根据试验测得的频率特性数据辨识出舵机的数学模型。利用辨识得到的数学模型在Matlab中进行控制系统仿真,并将仿真结果与实测频率特性数据进行比较。比较结果显示,所建立的模型误差小,在1~30Hz频率段具有较高的拟合精度,达到了导弹总体设计的指标要求。为导弹制导控制系统提供了较为准确的气动舵机模型。

The Levy method was introduced into the modeling of missile's pneumatic actuator, and the mathematical model of the actuator was identified using the frequency characteristic data deriving from test. Through comparison between the results of control system simulation in Matlab and the tested data, it was shown that the error of the model built was small and had higher fitting precision in the frequency band from 1Hz to 30Hz, which met the requirements of general design for missile. A relatively accurate pneumatic actuator model was provided for guidance control system of missile.