Sensorless control of a permanent magnet synchronous machine down to near zero speed applied to position motion control

Author

Schmidt, Peter B. ; Wijenayake, Ajith H.

Author_Institution

Adv. Technol. Labs., Rockwell Autom., Milwaukee, WI, USA

Volume

1

fYear

1996

fDate

6-10 Oct 1996

Firstpage

21

Abstract

This paper presents a sensorless estimation scheme that enables a permanent magnet nonsalient pole motor to be position controlled without the aid of position or velocity feedback transducers. A closed loop state space observer using two phase current feedback measurements and two phase voltage commands provide estimates for the unmeasured states: position and velocity. The estimates can be parameter sensitive. Therefore, this paper has modeled motor parameters and proposes to perform on-line identification to enhance the output of the observer

Keywords

closed loop systems; electric current measurement; feedback; machine control; motion control; observers; parameter estimation; permanent magnet motors; position control; servomotors; synchronous motor drives; Kalman filters; closed loop state space observer; motor parameters modeling; near zero speed; nonsalient pole motor; on-line identification; permanent magnet synchronous machine; phase current feedback measurements; phase voltage commands; position control; position motion control; sensorless control; sensorless estimation scheme; servo drive; Feedback loop; Observers; Permanent magnet machines; Permanent magnet motors; Sensorless control; State feedback; State-space methods; Synchronous motors; Transducers; Velocity control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1996. Thirty-First IAS Annual Meeting, IAS '96., Conference Record of the 1996 IEEE

Conference_Location

San Diego, CA

ISSN

0197-2618

Print_ISBN

0-7803-3544-9

Type

conf

DOI

10.1109/IAS.1996.556992

Filename

556992