Robust Current Control for Permanent Magnet Synchronous Motors by the Inverse LQ Method -An Evaluation of Control Performance Using Servo-Locks at Low Speed

Hiroshi Takami

Robust Current Control for Permanent Magnet Synchronous Motors by the Inverse LQ Method -An Evaluation of Control Performance Using Servo-Locks at Low Speed

Hiroshi Takami

Vol. 4, No. 4, pp. 228-236, Oct. 2004

10.6113/JPE.2004.4.4.228

Permanent magnet synchronous motor

PDF

Abstract

This paper describes the optimal current-control of a permanent magnet synchronous motor by the use of robust and simple current controllers, based upon the analytical procedure known as the inverse LQ (ILQ) design method. The ILQ design method is a strategy for finding the optimal gains based on pole assignment without solving the Riccati equation. It is very important to keep the motor in robust servo-lock. By experiments and simulations, we will show that the ILQ optimal servo-system with servo-lock is more insensitive at low speeds to variations in armature inductance than the standard PI servo-system. Variations in armature inductance have the greatest influence on the responses of a servo-system.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

H. Takami, "Robust Current Control for Permanent Magnet Synchronous Motors by the Inverse LQ Method -An Evaluation of Control Performance Using Servo-Locks at Low Speed," Journal of Power Electronics, vol. 4, no. 4, pp. 228-236, 2004. DOI: 10.6113/JPE.2004.4.4.228.

[ACM Style]

Hiroshi Takami. 2004. Robust Current Control for Permanent Magnet Synchronous Motors by the Inverse LQ Method -An Evaluation of Control Performance Using Servo-Locks at Low Speed. Journal of Power Electronics, 4, 4, (2004), 228-236. DOI: 10.6113/JPE.2004.4.4.228.