Integral sliding mode output control of delta operator systems with insensitivity to sampling time jitter
This paper focuses on integral sliding mode output control for linear delta operator systems with insensitivity to sampling time jitter in the case of small sampling times along with unmatched disturbances.A delta-domain integral sliding mode sector can be reached without chattering by employing a novel reaching law to avoid the inherent numerical ill-condition resulting from using the traditional shift-domain model at high sampling rates.Parameter sensitivity function of the transfer function with respect to sampling time jitter is also defined to mitigate the effect of sampling time jitter which may cause significant degradation of the overall system performance.By combining the novel bounded real lemma for delta operator using integral sliding mode adaptive control approach,a method of designing output feedback controller with insensitive to sample time jitter based on linear matrix inequality(LMI)is proposed,where the corresponding reaching law proposed is able to reduce the chattering.Finally,a numerical example is presented to show the effectiveness of the proposed method.
Sensitivity sampling time jitter integral sliding mode control delta operator dynamic output feedback controller linear matrix inequality (LMI)
Li-Ying Hao Hui Li Xiang-Gui Guo Jinyan Song Hongshuai Pang
College of Information Engineering,Dalian Ocean University,Dalian,Liaoning,116023,China Information Science and Technology College,Dalian Maritime University,Dalian,Liaoning,116026,China Tianjin Key Laboratory for Control Theory & Applications in Complicated System,School of Electrical
国际会议
长沙
英文
1272-1277
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）