学 术 报 告

报告人： 李少远 教授
（上海交通大学自动化系）

题目：Identification for Multivariable
Process Control Systems
时间：11月19日（周五）下午3：30
地点：理科大楼A1414（多媒体教室）

A novel parameter identification method for closed-loop two-input two-output (TITO) processes from step-test will be reported.
Through sequential step change of set points, the coupled closed-loop TITO system is decoupled equivalently into four independent single open-loop processes with same input signal acting on the four transfer functions. Consequently, existing identification methods for single-loop process can be extended to TITO systems and the parameters of first- or second-order plus dead-time models for each transfer function can be directly obtained by using the linear regression equations derived for the decoupled identification system. The proposed method is simple for engineering application and robust in the presence of large amounts of measurement noise. Simulation examples are given to show both effectiveness and practicality of the identification method for a wide range of multivariable processes.

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数学系

2004．11