TITLE:
Exponential Stabilization and Estimation for Sampled Observer Design of Surface Mounted Permanent Magnet Synchronous Motor
AUTHORS:
A. A. R. Al-Tahir
KEYWORDS:
Stability, SPMSM, Sampled Output Observer, Lyapunov Stability, Intelligent Sensor
JOURNAL NAME:
Journal of Sensor Technology,
Vol.6 No.4,
November
24,
2016
ABSTRACT: A nonlinear state observer design with sampled and delayed output measurements
for variable speed and external load torque estimations of SPMSM drive system has
been addressed, successfully. Sampled output state predictor is re-initialized at each
sampling instant and remains continuous between two sampling instants. Throughout
this study, a positive constant to satisfy an upper limit of the sampling period
between sampling instants and allowable timing delay in terms of observer parameters
has been prepared such that the exponential stable of the closed-loop system is
guaranteed, based on Lyapunov stability tools. In order to validate the theoretical
results introduced by main fundamental theorem to prove the observer convergence,
the proposed sampled-data observer is demonstrated through a sample study application
to variable speed SPMSM drive system.