Parametric identification of non-linear systems

被引：2

作者：

Padhy, PK ^{[1
]}

Majhi, S ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Elect & Commun Engn, New Delhi 110016, India

来源：

Proceedings of the IEEE INDICON 2004 | 2004年

关键词：

non-linear; identification; PID controller; relay feedback; limit cycle; gain margin; phase margin;

D O I：

10.1109/INDICO.2004.1497742

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper a new identification method is proposed for a class of non-linear systems. A linearized second order process model with time delay for the nonlinear system is identified using a relay test. Using some transformation it has been shown that the linearized process model faithfully represents the non-linear system. Lyapunov stability criterion is used to check the stability of the linearized model. To show effectiveness of the identification method, parameters of a PID controller have been found based on loop phase margin and gain margin criteria. Simulation results of a non-linear system show usefulness of the proposed identification method.

引用

页码：220 / 224

页数：5

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