Convex design control for practical nonlinear systems
SourceIEEE Transactions on Automatic Control
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This paper describes a new control scheme for approximately optimal control (AOC) of nonlinear systems, convex control design (ConvCD). The key idea of ConvCD is to transform the approximate optimal control problem into a convex semi-definite programming (SDP) problem. Contrary to the majority of existing AOC designs where the problem that is addressed is to provide a control design which approximates the performance of the optimal controller by increasing the 'controller complexity,' the proposed approach addresses a different problem: given a controller of 'fixed complexity' it provides a control design that renders the controller as close to the optimal as possible and, moreover, the resulted closed-loop system stable. Two numerical examples are used to show the effectiveness of the method. © 1963-2012 IEEE.
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