A Tuning Algorithm for LQ-PID Controllers using the Combined Time - and Frequency-Domain Control Method

- Journal title : Journal of Electrical Engineering and Technology
- Volume 10, Issue 3, 2015, pp.1244-1254
- Publisher : The Korean Institute of Electrical Engineers
- DOI : 10.5370/JEET.2015.10.3.1244

Title & Authors

A Tuning Algorithm for LQ-PID Controllers using the Combined Time - and Frequency-Domain Control Method

Kim, Chang-Hyun; Lee, Ju; Lee, Hyung-Woo;

Kim, Chang-Hyun; Lee, Ju; Lee, Hyung-Woo;

Abstract

This paper proposes a new method for tuning a linear quadratic - proportional integral derivative controller for second order systems to simultaneously meet the time and frequency domain design specifications. The suitable loop-shape of the controlled system and the desired step response are considered as specifications in the time and frequency domains, respectively. The weighting factors, Q and R of the LQ controller are determined by the algebraic Riccati equation with respect to the limiting behavior and target function matching. Numerical examples show the effectiveness of the proposed LQ-PID tuning method

Keywords

LQ-PID Control;Combined method;Loop-Shaping;Target function;

Language

English

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