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Fixed zeros of decentralized control systems

By: Ozguner, U.; Unyelioglu, K.A.; Ozguler, A.B.;

2000 / IEEE


This item was taken from the IEEE Periodical ' Fixed zeros of decentralized control systems ' Considers the notion of decentralized fixed zeros for linear, time-invariant, finite-dimensional systems. For an N-channel plant that is free of unstable decentralized fixed modes, an unstable decentralized fixed zero of channel i (1/spl les/i/spl les/N) is defined as an element of the closed right half-plane, which remains as a blocking zero of that channel under the application of every set of N-1 controllers around the other channels, which make the resulting single-channel system stabilizable and detectable. The paper gives a complete characterization of unstable decentralized fixed zeros in terms of system-invariant zeros.