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Observer-based control for fractional-order singular systems with order α (0 < α < 1) and input delay

输入时滞分数阶(0α1)奇异系统的观测器控制

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Abstract

In this paper, observer-based control for fractional-order singular systems with order α (0 < α < 1) and input delay is studied. On the basis of the Smith predictor and approximation error, the system with input delay is approximately equivalent to the system without input delay. Furthermore, based on the linear matrix inequality (LMI) technique, the necessary and sufficient condition of observer-based control is proposed. Since the condition is a nonstrict LMI, including the equality constraint, it will lead to some trouble when solving problems using toolbox. Thus, the strict LMI-based condition is improved in the paper. Finally, a numerical example and a direct current motor example are given to illustrate the effectiveness of the strict LMI-based condition.

摘要

本文研究输入时滞分数阶(0α1)奇异系统的观测器控制问题。基于史密斯预测器和逼近误差,有输入时滞的系统近似等价于无输入时滞的系统。进一步地,基于线性矩阵不等式方法,提出基于观测器控制的充要条件。该条件由于包含等式约束,因此是非严格线性矩阵不等式条件,在使用工具箱求解时会遇到一些麻烦。因此,本文改进了基于严格线性矩阵不等式的条件。最后,通过数值算例和直流电机实例说明了基于严格线性矩阵不等式的条件的有效性。

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Correspondence to Xin Zhao  (赵新).

Additional information

Project supported by the National Natural Science Foundation of China (Nos. U1813210, 62027812, and 62273185)

Contributors

Bingxin LI designed the research. Bingxin LI and Xiangfei ZHAO processed the data. Bingxin LI drafted the paper. Xuefeng ZHANG helped organize the paper. Xuefeng ZHANG and Xin ZHAO revised and finalized the paper.

Compliance with ethics guidelines

Bingxin LI, Xiangfei ZHAO, Xuefeng ZHANG, and Xin ZHAO declare that they have no conflict of interest.

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Li, B., Zhao, X., Zhang, X. et al. Observer-based control for fractional-order singular systems with order α (0 < α < 1) and input delay. Front Inform Technol Electron Eng 23, 1862–1870 (2022). https://doi.org/10.1631/FITEE.2200294

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  • DOI: https://doi.org/10.1631/FITEE.2200294

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