一种自动调整遗忘因子的快速时变参数辨识方法
An Identification Algorithm with Auto-Regulation Forgetting Factor for Fast time Varing System
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摘要: 本文介绍了一种自动调整遗忘因子的快速时变参数辨识方法.这种方法主要是在文献 [1,2]的基础上改进了遗忘因子的选取方法,引入了自动调整遗忘因子,以适应导弹控制系统 等快速时变系统的参数估计要求.数字仿真结果表明,这种辨识方法对于诸如参数的指数变 化、斜坡变化、阶跃变化、正弦变化、方波变化以及由这些变化形式构成的混合变化,都有比较 好的辨识效果.Abstract: This paper presents an identification algorithm with auto-regulation forgetting factor for fast time-varying systems. This algorithm is based on Ref[1,2] and perfectly improves the method for choosing forgetting factor, and in the algorithm the auto-regulation factor is introduced so as to cope with parameter estimation of fast time varying systems such as missile control system, etc., Digital simulation results show that this algorithm is satisfactory for identifying the parameters which change in the form of some typical functions (e.g., exponential, slide, step, sine, square or their combination).
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Key words:
- System identification /
- fast time varying parameter /
- forgetting factor
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