Reduced parameter variation sensitivity with a variable structure controller in brushless DC motor velocity control systems

Author

Lee, C.K. ; Kwok, N.M.

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech., Hung Hom, Hong Kong

fYear

1993

fDate

2-8 Oct 1993

Firstpage

746

Abstract

A brushless DC (BLDC) motor velocity control system using a variable structure controller (VSC) has been investigated. Using the pole placement design method, with the state-space model of the BLDC motor, simplifies the design of the VSC controller. The controller is intentionally switched in its structure according to the sign of deviation of the system state from a switching surface where the system performance is prescribed. Chattering is reduced when the switching effort is made proportional to the magnitude of the system state deviation from the switching surface. With the application of a VSC, simulation results indicated that the system performance with respect to the sensitivity to parameter variations is greatly improved

Keywords

DC motors; controllers; machine control; machine theory; poles and zeros; state-space methods; variable structure systems; velocity control; brushless DC motor; chattering reduction; parameter variation sensitivity reduction; pole placement design method; state-space model; switching surface; variable structure controller; velocity control systems; Brushless DC motors; Brushless motors; Control systems; DC motors; Inverters; Optimal control; Permanent magnet motors; State feedback; Synchronous motors; Velocity control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE

Conference_Location

Toronto, Ont.

Print_ISBN

0-7803-1462-X

Type

conf

DOI

10.1109/IAS.1993.298869

Filename

298869