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Lars Grüne, Jürgen Pannek, Karl Worthmann, Dragan Nesic
Redesign Techniques for Nonlinear Sampled-data Systems
Keywords: controller design, sampled-data-system, bandwidth constraint, convergence rate, Taylor expansion
In the emulation approach to controller design for networked control systems the controller is first designed in continuous time ignoring the network and then implemented as a sampled-data controller. While very attractive for its simplicity, typically sufficiently small sampling periods are needed in order to ensure satisfactory performance of the resulting sampled-data closed loop. Thus, in the presence of network bandwidth constraints performance loss up to instability may occur. In this paper we present a variety of analytical and numerical techniques for the redesign of sampled-data controllers which improve the sampled-data performance of the non-redesigned controller and aim at reducing the necessary communication bandwidth.
at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag
Print ISSN: 0178-2312
Volume: 56, 01/2008
Pages: 038 - 048