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http://dx.doi.org/10.5370/JEET.2015.10.3.1244

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

Kim, Chang-Hyun (The Research Institute of Industrial Science, Hanyang University)
Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
Lee, Hyung-Woo (Dept. of Railway Vehicle System Engineering, Korea National University of Transportation)
Publication Information
Journal of Electrical Engineering and Technology / v.10, no.3, 2015 , pp. 1244-1254 More about this Journal
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;
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