An Algorithm for Stability Determination of Two-Dimensional Delta- Operator Formulated Discrete-Time Systems
Abstract
The recent interest in delta-operator formulated discrete-time systems is due mainly to their superior finite wordlength characteristics as compared to their more conventional shift-operator counterparts, and the possibility of a more unified treatment of both continuous- and discrete-time systems. With such advantages, design, analysis, and implementation of two- dimensional (2-D) discrete-time systems using the delta-operator is indeed warranted. Towards this end, the work in this paper addresses the development of an easily implementable direct algorithm for stability checking of 2-D discrete time system transfer function models. Indirect methods that utilize transformation techniques are not pursued since they can be numerically unreliable. In development such an algorithm, a tabular form for stability checking of discrete time system characteristic polynomials with complex-valued coefficients and certain quantities that may be regarded as their corresponding Schur-Cohn minors are also proposed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1993
- Accession Number
- ADA283070
Entities
People
- A. S. Boujarwah
- Kamal Premaratne
Organizations
- University of Miami