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Decentralized H/sub /spl infin// controller design for large-scale systems: a matrix inequality approach using a homotopy method

By: Ikeda, M.; Fujisaki, Y.; Zhai, G.;

1996 / IEEE / 0-7803-3590-2

Description

This item was taken from the IEEE Periodical ' Decentralized H/sub /spl infin// controller design for large-scale systems: a matrix inequality approach using a homotopy method ' This paper considers a decentralized H/sub /spl infin// control problem for large-scale systems consisting of a number of interconnected subsystems with the information structure constraints which are compatible with the subsystems. The H/sub /spl infin// control specification is imposed on the transfer function from the disturbance input to the controlled output of the overall closed-loop system. The decentralized H/sub /spl infin// control problem is reduced to a feasibility problem of a bilinear matrix inequality (BMI). To solve the BMI, an algorithm is proposed using the idea of the homotopy method, where the interconnections between subsystems are increased gradually from zeros to the given magnitudes. The case where polytopic perturbations exist in the interconnections is also treated.