中文摘要：

电动舵机伺服系统作为飞行控制系统的执行机构,是联系飞行控制指令和操纵元件的设备,由于环境条件的复杂性和模型特性参数的不确定性,很难得到被控对象的精确数学模型,对象不确定性给伺服系统的参数优化也带来许多困难。提出一种利用MATLAB平台的电动舵机伺服系统参数辨识的方法,结合电动舵机伺服系统原理特性,在分析系统动力学模型的基础上,通过对系统模型分析方案进行对比,确定系统模型分析方案。并在空载条件下,利用仿真软件系统辨识工具箱对电动舵机伺服系统各环的开环模型进行辨识实验,实现系统各环参数的辨识。在Simulink仿真环境下,搭建各闭环模型并进行验证性试验。结果表明,系统模型辨识的正确可行,既在一定精度范围内再现原系统的动态响应,为飞行器电动舵机优化设计提供了依据。

英文摘要：

As the actuator of the flight control system,the electric actuator servo system is an equipment which contacts the flight control commands and the control elements. Due to the complexity of environmental conditions and characteristics of model parameter uncertainty,it is difficult to get the accurate mathematical model of the controlled object,and the uncertainty of object also brings many difficulties to the parameter optimization of the servo system. A parameter identification method based on MATLAB is proposed. According to the principle of electric actuator servo system,based on the analysis of the system dynamics model,the system model analysis method is determined by comparing different analysis schemes. Thereafter,identification simulations are carried out under no-load condition on the model of the electric actuator servo system by using system identification toolbox of simulation software,and each loop parameter in the system is identified. Based on the platform of Simulink,the model of each closed loop is built to make confirmatory test. The results demonstrate that the system model identification is correct and feasible,the dynamic response of the original system is reproduced with certain precision.