多功能伪随机信号相关仪及冷轧机控制系统在线辨识

本文介绍了根据系统在线辨识原理设计的伪随机信号相关仪,还讨论了采用多周期逆重复m序列,配合实时二项式加权平均消除系统直流漂移对测试脉冲响应函数的影晌;对系统施加一个周期预扰动,消除系统被扰后初始输出非平稳造成的不良影响;将两个相互相差二分之一半周期的逆重m序列作为独立序列,来辨识多维系统.(并用实验证明了以上提高辨识准确度的措施所获得的效果以及所扩大的功能.最后介绍了冷轧机控制系统的在线辨识与在线调整.

Multi-Functional Pseudorandom Binary Sequence Correlator and on-Line Identification of Control Systems of Cold Rolling Mills

This paper describes the design of pseudorandom binary sequence correlator based on the principles of on-line identification. An experimental procedure is suggested, Therefore a multi-periods inverse-repeat m sequence is synchronized with real time binomial weighted averaging in order to eliminate the effect of polynomial drift to the estimated impulse response. The system is prior excited by a periodic pseudorandom signal. it can eliminate the effects of non-stationary process. Two m sequence of inverse-repeat shifting 1/2 half-periods can be considered as independent Sequence, which identify a multidimensionall system. The experiments have proved the effectiveness of these methods which increases identification accuracy and eniarge. The functon of The equipment function. At last, this paper presents the on-line identification and the on-line regulaton of control systems for cold rolling mills.