Vol. 4 No. 1 (2022), Articles
Volume 4 — Issue 1 — March 2022

Control Approaches through Time Weighted Error and Gain Margin tuning for Unstable Systems

Published 19-05-2022
https://doi.org/10.36548/jiip.2022.1.004
N. Arulmozhi
Assistant Professor (Sr.Gr.), EIE, Government College of Technology, Coimbatore, India
S. Chitra
Assistant Professor (SG), EEE, Government College of Technology, Coimbatore, India
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How to Cite

Arulmozhi, N., and S. Chitra. 2022. “Control Approaches through Time Weighted Error and Gain Margin Tuning for Unstable Systems”. Journal of Innovative Image Processing 4 (1): 34-42. https://doi.org/10.36548/jiip.2022.1.004.
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Keywords

  • PID
  • Error Tuning
  • Unstable SOPTD
  • Optimal Gain margin tuning

Abstract

The Proportional Integral Derivative (PID) control strategy is very simple, robust, and sufficient to tune the low-order plus time delay model. On the other hand, the empirical PID controller has structural limitations in controlling the unstable processes. The closed-loop dynamics and structural mismatch can be analyzed intuitively to understand why the PID controller is not suitable to control the unstable processes effectively. Also, the conventional PID controller with minor structural variations designed to guarantee Optimal Gain Margin (OGM) tuning and Integral of the Time-weighted Absolute Error (ITAE) tuning, handles better than the performance offered by a conventional PID controller for an unstable process.

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