Decentralized Robust Output Feedback Stabilization for Similar Nonlinear Composite Systems

The output feedback similarity between two control systems is described, which is the corresponding expansion of output feedback equivalence in linear theory. Then, the nonlinear composite systems composed of interconnected similar subsystems, which possess certain similar structures, are discussed. By full using the information from the similar structures, the decentralized robust output feedback controllers are designed. At length, the example shows the validity.