一种适用于飞行器控制系统的快速时变参数辨识方法

 在自适应控制中,特别在飞行器控制系统中,经常会遇到快速时变参数的辨识问题,这是一个比较困难的问题。本文利用折线段近似时变参数,根据最小二乘原理导出了一种计算比较简单、辨识精度较高的快速时交参数辨识方法。文中对反坦克导弹和地空导弹等快速时变系统进行了数学模拟.其结果表明,这种辨识方法不仅适用于连续快速时变系统,而且在参数变化存在第二类间断点时,仍有较好的辨识结果。

AN IDENTIFICATION METHOD OF FAST TIME VARYING PARAMETERS ADAPTED TO AIRCRAFT CONTROL SYSTEMS

In adaptive control systems, specifically in aircraft control systems, we often face the problem of identifying fast time varying parameters. Using broken line to approximate time varying parameter and based on the least squares principle, we have derived an identification algorithm which is simple for calculation with perfect accuracy. In this paper we have also done some simulations for control systems of antitank missile, ground to air missile and so on. The simulation results show that this algorithm not only can get good identification results for continuous fast time varyine parameters, hut also has enough accuracy for identifying parameters with discontinuous points oi second class in varying process.