A robust digital position control of brushless DC motor with dead beat load torque observer

Author

Ko, Jong Sun ; Lee, Jung Hoon ; Chung, Se Kyo ; Youn, Myung Joong

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

40

Issue

5

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

512

Lastpage

520

Abstract

A method for the robust position control of brushless DC (BLDC) motors is presented. The linear quadratic controller plus load torque observer is used to obtain an approximately linearized robust BLDC motor system for an AC servo, using the field-orientation method. The gains are obtained systematically from a discrete state space analysis. The robustness is obtained without affecting the overall system response. The load disturbance is detected by a zero-observer of the unknown and inaccessible input, and is feedforward compensated without requiring noisy current information. The overall system is controlled using a microprocessor, and the performance of each control algorithm is compared with both the simulation and the experimental results for two types of machines, a BLDC motor and a brushless direct drive (BLDD) motor

Keywords

DC motors; digital control; position control; power engineering computing; state estimation; state-space methods; torque control; brushless DC motor; dead beat load torque observer; discrete state space analysis; feedforward compensated; field-orientation method; linear quadratic controller; microprocessor; robust digital position control; zero-observer; Brushless DC motors; Brushless motors; Control systems; DC motors; Linear approximation; Position control; Robust control; Servomechanisms; Servomotors; Torque control;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.238020

Filename

238020