Showing papers by "Ye-Hwa Chen published in 1992"
TL;DR: In this article, a decentralized robust control for large-scale linear uncertain systems is proposed, where the structural property of the uncertainty is incorporated in the design, and an adaptive version of robust control is also proposed as no input matrix uncertainty appears.
Abstract: A class of large-scale linear uncertain systems is under consideration. The uncertainty is time-varying. No a priori deterministic or stochastic information is assumed except its possible bound. Decentralized robust control for each subsystem is proposed. The salient feature of the design is that it decomposes the internal uncertainty and the interconnection. This enables the structural property of the uncertainty to be incorporated in the design. An adaptive version of the decentralized robust control is also proposed as no input matrix uncertainty appears.
37 citations
TL;DR: In this article, a class of nonlinear uncertain interconnected systems with time-varying uncertainty is considered, where the uncertainty may arise within each system as well as in the interconnections.
Abstract: We consider a class of nonlinear uncertain interconnected systems with time-varying uncertainty The uncertainty may arise within each system as well as in the interconnections The uncertainty is assumed to be bounded but the bound is unknown No a priori statistical information is imposed Decentralized adaptive robust control is proposed for each system The control has two parts First, an adaptive scheme for the estimation of the bound is constructed Second, a robust control, which is based on the adaptive parameter, is adopted for each system The control is then applied to an uncertain flexible beam
5 citations
TL;DR: In this article, a class of large-scale uncertain dynamical systems is considered, where the system is composed of N interconnected subsystems which possess uncertainties and there are uncertainties in the interconnections.
Abstract: A class of large-scale uncertain dynamical systems is considered. The system is composed of N interconnected subsystems which possess uncertainties. Moreover, there are uncertainties in the interconnections. The uncertainly is (possibly fast) time-varying. No statistical information on the uncertainly is imposed. The uncertainty is, however, assumed bounded. Early work along this line requires a matching condition for the uncertainty. The control design here extends the previous result to mismatched uncertainty.
5 citations
16 Dec 1992
TL;DR: In this paper, two classes of scheduling policies are proposed to render the machine stable in small-lot, discrete and asynchronous type of manufacturing systems rather than high volume and continuous type manufacturing.
Abstract: A generic manufacturing environment is considered. The emphasis is on the small-lot, discrete and asynchronous type of manufacturing systems rather than high volume and continuous type manufacturing. Two classes of scheduling policies are proposed to render the machine stable. The policies are of feedback type. The new scheduling policies are based on the current buffer conditions of the part types. In the first class, the decision is made based on the current overall buffer level of all part types. In the second class, the decision is based on the processing time of the part types. The decision is made in real time and online. >