A new approach to the discretization of continuous-time controllers

J. P. Keller; B. D.O. Anderson

doi:10.23919/acc.1990.4790919

A new approach to the discretization of continuous-time controllers

J. P. Keller^*, B. D.O. Anderson

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

16 Citations (Scopus)

Abstract

A method for discretizing continuous-time controllers is derived, using principles of controller approximation. It focuses on the closed-loop use of the discrete-time controller. The resulting approximation criterion is a measure of the 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, 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)	1127-1132
Number of pages	6
Journal	Proceedings of the American Control Conference
DOIs	https://doi.org/10.23919/acc.1990.4790919
Publication status	Published - 1990
Externally published	Yes
Event	Proceedings of the 1990 American Control Conference - San Diego, CA, USA Duration: 23 May 1990 → 25 May 1990

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AB - A method for discretizing continuous-time controllers is derived, using principles of controller approximation. It focuses on the closed-loop use of the discrete-time controller. The resulting approximation criterion is a measure of the 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, 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.

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T2 - Proceedings of the 1990 American Control Conference

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A new approach to the discretization of continuous-time controllers

Abstract

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