A New Sensorless Design for PMLSM Servo Control System

Author

Zhili Liu ; Xingcheng Huang ; Shuwang Du ; Mingxuan Sun

Author_Institution

Special Equip. Res. Inst., ZJUT, Hangzhou, China

fYear

2009

fDate

11-12 July 2009

Firstpage

466

Lastpage

471

Abstract

In this paper a new method to inspect the speed and position of linear motor is presented. We find the mathematical model of PMLSM in the rotationary dq coordinate contains the nonlinear term and it satisfies Lipschitz conditions. So we introduce an observer design method for Lipschitz nonlinear systems in the presence of bounded disturbances and give the stability condition of the observer with the form of LMI. Based on this method we estimate the speed of the linear motor, the result of which can be used to calculate the position of motorpsilas magnetic pole together with formulae. To support the theoretical concepts, we set up a sensorless linear servo control system for PMLSM. The simulation results prove the feasibility of the proposed method.

Keywords

control system synthesis; linear matrix inequalities; linear synchronous motors; machine control; nonlinear control systems; observers; permanent magnet motors; position control; servomotors; stability; velocity control; LMI; Lipschitz nonlinear system; PMLSM servo control system; bounded disturbance; magnetic pole; mathematical model; observer design method; permanent magnetic linear synchronous motor; position inspection; sensorless linear servo control system design; speed inspection; stability condition; Control systems; Design methodology; Mathematical model; Nonlinear control systems; Nonlinear systems; Observers; Sensorless control; Servomotors; Servosystems; Synchronous motors; Lipschitz conditions; nonlinear observer; nonsensor control; permanent-magnet linear synchronous motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation and Systems Engineering, 2009. CASE 2009. IITA International Conference on

Conference_Location

Zhangjiajie

Print_ISBN

978-0-7695-3728-3

Type

conf

DOI

10.1109/CASE.2009.127

Filename

5194493