Design of digital controllers for multivariable systems via time-moments matching

An algorithm for the design of digital controllers for multivariable systems is presented. The algorithm proceeds in the bilinearly transformed w-domain and is based on the matching of few initial time-moments of the open-loop augmented system with those of a reference model. It is computationally s...

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Bibliographic Details
Published in:Computers & electrical engineering 1998-09, Vol.24 (5), p.335-347
Main Authors: Sahani, A.K., Nagar, S.K.
Format: Article
Language:English
Subjects:
Applied sciences
Computer science
control theory
systems
Control system design
Control system synthesis
Control theory. Systems
Digital control
Discrete-time systems
Exact sciences and technology
Multivariable system
Pade approximation
Time-moments
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Summary:An algorithm for the design of digital controllers for multivariable systems is presented. The algorithm proceeds in the bilinearly transformed w-domain and is based on the matching of few initial time-moments of the open-loop augmented system with those of a reference model. It is computationally simple and does not require any graphical investigation. Also, neither it relies on any trial and error procedure nor depends on ingenuity of the designer. Only linear algebraic matrix equations are to be solved to find the parameters of the desired digital controller. Two examples are included to demonstrate the validity of the proposed algorithm.
ISSN:0045-7906
1879-0755
DOI:10.1016/S0045-7906(98)00003-2