Speed Control of Buck-converter Driven Dc Motor Using LQR and PI: A Comparative Assessment

Author

Ismail, R. M T Raja ; Ahmad, M.A. ; Ramli, M.S.

Author_Institution

Control & Instrum. Res. Group (COINS), Univ. Malaysia Pahang, Kuantan

fYear

2009

fDate

3-5 April 2009

Firstpage

651

Lastpage

655

Abstract

This paper presents the detailed account on the control design of a buck converter driven DC motor. Linear quadratic regulator (LQR) and Proportional-Integral (PI) are the techniques proposed in this investigation to control the speed of a DC motor. The dynamic system composed from converter/motor is considered in this investigation and derived in the state-space and transfer function forms. Complete design and analyses of simulation results for LQR and PI technique are presented in frequency domain and time domain. Performances of the controller are examined in terms of angular velocity, duty cycle input energy and armature current. Finally, a comparative assessment of the impact of each controller on the system performance is presented and discussed.

Keywords

DC motors; PI control; linear quadratic control; machine control; power convertors; state-space methods; transfer functions; velocity control; buck-converter driven DC motor; dynamic system; frequency domain; linear quadratic regulator; proportional-integral control; speed control; state-space method; time domain; transfer function; Analytical models; Buck converters; Control design; DC motors; Frequency domain analysis; Pi control; Proportional control; Regulators; Transfer functions; Velocity control; Buck converter driven dc motor; LQR; PI;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Management and Engineering, 2009. ICIME '09. International Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-0-7695-3595-1

Type

conf

DOI

10.1109/ICIME.2009.8

Filename

5077115