Optimal controller design for high precision linear positioning systems based on permanent magnet synchronous motors

This paper is concerned with the application of permanent magnet synchronous motors to high accuracy, high speed linear positioning systems. A number of possible control strategies for this application are discussed. The state-space model in the d-q reference frame is developed for the motor, and the application of feedback linearisation to this problem is explained. An optimal control design methodology is then applied to the resulting linearised model. Simulated results of the design are presented.