Title: Design of proportional parallel distributed compensators for non-linear systems

Authors: Meng Joo Er, Yi Zhou, Lin Chen

Addresses: Intelligent Systems Center, 50 Nanyang Drive, 7th Storey, Research Techno Plaza, BoarderX Block, 637533, Singapore. ' Intelligent Systems Center, 50 Nanyang Drive, 7th Storey, Research Techno Plaza, BoarderX Block, 637533, Singapore. ' Intelligent Systems Center, 50 Nanyang Drive, 7th Storey, Research Techno Plaza, BoarderX Block, 637533, Singapore

Abstract: In this paper, a design methodology for stabilising of a class of non-linear systems is presented. The non-linear plant is first approximated, by a Takagi-Sugeno fuzzy model. Subsequently, |Parallel Distributed Compensators| (PDC) and |Proportional Parallel Distributed Compensators| (PPDC) are designed to stabilise the system. A novel PPDC design with a more flexible controllable range for various coefficients of the compensator is proposed. By virtue of this, better solutions than those achieved by the existing approach can be obtained. Both compensators are applied to control an agile missile system, which is a typical complicated system with high non-linearity. Simulation studies show that the closed loop system is stable and the proposed PPDC are more superior to PDC.

Keywords: fuzzy logic; fuzzy control; nonlinear systems; parallel distributed compensators; proportional parallel distributed compensators; stability; design; T-S model; fuzzy models; agile missile systems; missile control; simulation.

DOI: 10.1504/IJCAT.2006.011146

International Journal of Computer Applications in Technology, 2006 Vol.27 No.2/3, pp.204 - 211

Published online: 19 Oct 2006 *

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