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A New Approach to the Discretization of Continuous-Time Controllers

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1992

Authors

Keller, Juürg P.
Anderson, Brian D.O.

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Research Projects

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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.

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https://hdl.handle.net/1885/733797318

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ANU Research Publications

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IEEE Transactions on Automatic Control

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Journal article

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DOI

10.1109/9.121622

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