自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 27    No. 9    September 2020

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A unified approach of PID controller design for unstable processes with time delay
Ashraf RAZA, Md Nishat ANWAR

Electrical Engineering Department, National Institute of Technology, Patna-800005, India

Abstract:This paper addresses a unified approach of the PID controller design for low as well as high order unstable processes with time delay. The design method is based on the direct synthesis (DS) approach to achieve the enhanced load disturbance rejection. To improve the servo response, a two-degree of freedom control scheme has been considered. A suitable guideline has been provided to select the desired reference model in the DS scheme. The direct synthesis controller has been approximated to the PID controller using the frequency response matching method. A consistently better performance has been obtained in comparison with the recently reported methods.

 

Key words: unstable process; maximum sensitivity; time delay; higher order process; direct synthesis method; frequency response matching

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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