| Summary: | 博士 === 國立清華大學 === 電機工程研究所 === 81 === Even though the field-oriented induction motor drive can be
operated as a separately excited DC motor, its
performance is much affected by the variations of motor
parameters. Therefore, more sophisticated control techniques
are required to achieve better control performances, and
more powerful processors are also needed to implement these
control algorithms. Recently, due to the development of
DSPs, the realization of complex real-time control tech-
niques becomes easier. A DSP-based indirect field-oriented
induction motor servo drive and its feedback control are
presented in this dissertation. The DSP with suitable
interfacing to a personal computer provides an environment
for realizing complex control algorithms. As for the
development of high performance controllers, in order to let
the drive have good command tracking and load regulating
dynamic responses, the two-degree-of-freedom speed and
position controllers and their systematic design procedures
are introduced first. Then a simple robust controller
based on direct cancellation of uncertainties is proposed
such that the desired drive control performances can be
preserved under parameter variations and external
disturbances. In the proposed robust controller, the
performances and the control effort can be compromised. The
existence of system dead-time may greatly affect the
stability and performances of the closed-loop controlled
drive system. A dead-time compensator is then proposed to
solve this problem. The proposed dead-time compensator is
designed based on the stability analysis made on the
parameter plane. The effectiveness of the proposed
controller and the performance of the motor drive are
demonstrated by some simulation and experimental results.
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