Paper Info
Title
Robust digital pole-placer for electric drives based on uncertain diophantine equation and interval mathematics
Abstract
In this paper, a novel robust digital controller design is proposed and implemented for induction motor speed control. The objective is to design a robust output feedback controller that places the closed-loop poles in a specified region in order to achieve the desired dynamic performance for a system with variable load. The design is carried out in the frequency domain by solving the uncertain Diophantine equation using interval mathematics and non-linear optimization method. In order to capture the load variations, the characteristic equation is relaxed and enlarged from a fixed-point to an interval set. A simple model-based design methodology is adopted in this work and implemented experimentally using a Hardware-in-the-Loop environment. The proposed design is simulated and then validated using real induction drive system. The proposed controller is compared with two other controllers: the auto tuned PID and a least-square-based robust controller. Experimental results show that the designed robust controller provides a better dynamic response than conventional controllers used in the industry when the motor's load is varied. These results validate the proposed design as the plant's output follows the reference signal with minimal overshoot and settling time.
Year
DOI
Venue
2018
10.1177/0142331217705589
TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL
Keywords
DocType
Volume
Diophantine equations,induction motor drive,interval mathematics,robust digital control
Journal
40.0
Issue
ISSN
Citations 
SP8
0142-3312
0
PageRank 
References 
Authors
0.34
10
5
Name
Order
Citations
PageRank
Hisham M. Soliman1438.63
Hisham M. Soliman2438.63
Ashraf Saleem3134.14
Tarek Tutunji4143.90
Serein Al Ratrout500.34