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Transactions of the Institute of Measurement and Control
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Control of a sprayform tooling process in rapid manufacture

Vassilios A. Tsachouridis

Paul Jones

Stephen Duncan

Department of Engineering Science, University of Oxford, 17 Parks Road, Oxford OX1 3PJ, UK

This paper considers the problem of control system design for governing temperature profiles of a sprayform tooling process used in rapid manufacture. After describing and modelling the sprayforming process, the paper introduces the concept of steady-state functional controllability and investigates the degree up to which this process is controllable via multivariable controllers. In particular, the discrete time variant (DTV) linear quadratic regulators (LQR) are considered as examples of multivariable controllers. The theoretical issues outlined in this paper are accompanied by simulations and experimental studies of a real sprayforming process.

Key Words: discrete time linear quadratic regulator • point-wise state controllability • sprayform tooling • steady state functional controllability

Transactions of the Institute of Measurement and Control, Vol. 28, No. 4, 309-322 (2006)
DOI: 10.1177/0142331206070326
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