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论文类型：期刊论文

发表时间：2020-03-10

发表刊物：INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL

收录刊物：EI、SCIE

卷号：30

期号：4

页面范围：1679-1695

ISSN号：1049-8923

关键字：disturbances; dynamic output quantization; extended state estimator; switched systems

摘要：This paper studies the problem of quantized output feedback stabilization for a disturbed discrete-time switched system. With the quantized output measurement, an extended state current estimator is constructed to estimate the state and disturbance. In the presence of switches and disturbances, the design of quantization scheme becomes a big challenge to avoid the quantizer saturation and guarantee the control precision. In this setup, the well-applied time-triggered method to design the update policy of dynamic quantization parameter is hard to implement. We solve the above problem by proposing a novel event-triggered update policy of quantization parameter, by which the quantizer update is adaptive to the switching signal and the bound of disturbance difference. Consequently, the quantizer saturation is avoided and, combined with the designed dwell-time switching law, the system state can converge to the origin. The proposed method is illustrated by a numerical example.