Abstract
Yasser Gaber A. Dessouky
Adaptive control and one-line identification of sensorless permanent magnet DC motor
Permanent Magnet PMDC motors have outstanding
performance for use in many modern applications like
automated manufacturing systems, automobiles, office machine
drives, tools and medical equipment.To control these motors,
speed sensors are indispensable. A sensorless control scheme
using an observeris proposed. However, this sensorless control
method uses motor parameters to estimate speed, and hence
estimation error is caused by parameters variations. That is
why,an effective and simple on-line parameter identification
scheme is proposed to estimate armature resistance and
inductance of the motor. The identification method is developed
based on the fact that, in practice PM flux-linkage is constant.
An adaptive control method is proposed to control PMDC
motor speed to maintain speed estimation accuracy. Simulation
results are included to prove the effectiveness of the overall
control system under different operating conditions. |