摘要
本文采用正交函数BPF将含有未知参数的系统线性微分方程转化为代数向量方程进行求解而完成辨识过程,获取表征系统特性的传递函数或微分方程参数.仿真辨识及对实际电液控制系统的辨识结果均表明,BPF辨识法具有原理简洁、实现方便及辨识精度高等优点.任何可积函数均可作为辨识输入信号,辨识过程可由递推算法实现.所以BPF辨识法能方便有效地用于动态过程的系统实时在线辨识.
The identification is accomplished by transforming the linear differential equation of a dynamic system into an algebraic form via block pulse functions. Both numerical and real electro-hydraulic control systems identification show the method is concise in theory, convenient in computation and has high accuracy. Any integrable function can be the input signal for identification, and it is convenient to realize by recursive algorithm. This makes the method especially suitable for real time identification of a dynamic process.
出处
《自动化学报》
EI
CSCD
北大核心
1989年第6期515-522,共8页
Acta Automatica Sinica
关键词
正交函数
电液控制系统
系统辨识
Block pulse functions
hydraulic systems
identification.
