Abstract
A switching system always comprises of several subsystems and a rule supervising the switching between the subsystems. A major problem that is often inherent to all dynamical systems is actuator saturation. Saturation is a nonlinear property that nonlinearly maps small input signals to the output, which may affect the system properties and even destroy them. In this study, stability and stabilization of a class of switched stochastic systems with saturation control was investigated. First, the variation parameter method was used to present the integral form of switched stochastic systems. Second, to guarantee that the zero solution is globally exponentially stable in mean square, two sufficient conditions were obtained using direct computation with Gronwall inequality and indirect method with matrix theory, respectively. Further, another simple sufficient condition was obtained for the stability of the systems using the row norm, column norm, and Frobenius norm. Finally, two examples were used to illustrate the preciseness and effectiveness of the results. Moreover, various control designs were observed to stabilize the systems, which differ from the technique of linear matrix inequalities.
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Acknowledgements
This work was supported by Natural Science Foundation of Shandong Province of China (Grant No. ZR2017MA045). The first and the third authors would like to thank the National University of Singapore.
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Guo, Y., Ge, S.S., Fu, J. et al. Stability and stabilization of a class of switched stochastic systems with saturation control. Sci. China Inf. Sci. 64, 222201 (2021). https://doi.org/10.1007/s11432-020-3002-7
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DOI: https://doi.org/10.1007/s11432-020-3002-7