A New Approach to the Discretization of Continuous-Time Controllers

Juürg P. Keller; Brian D.O. Anderson

doi:10.1109/9.121622

A New Approach to the Discretization of Continuous-Time Controllers

Juürg P. Keller, Brian D.O. Anderson

School of Engineering

Research output: Contribution to journal › Article › peer-review

159 Citations (Scopus)

Abstract

A new method for discretizing continuous-time controllers is derived, using principles of controller approximation [1]. It focuses on the closed-loop use of the discrete-time controller. The resulting approximation criterion is a measure for stability of the control system, provides an upper bound on the sampling time for which stability can be guaranteed, and because it is based on continuous-time controller approximation it indicates the cost of discretization in terms of performance degradation. The discrete-time controller is obtained through minimization of this criterion, which can be performed with standard software used in H∞ controller design.

Original language	English
Pages (from-to)	214-223
Number of pages	10
Journal	IEEE Transactions on Automatic Control
Volume	37
Issue number	2
DOIs	https://doi.org/10.1109/9.121622
Publication status	Published - Feb 1992

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A New Approach to the Discretization of Continuous-Time Controllers

Abstract

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