Aperiodically intermittent stabilization for complex-valued hybrid stochastic delayed systems: An average technique.

• The concepts of average control rate and average control period are proposed to characterize the distribution of work intervals and rest intervals of aperiodically intermittent control. • The constraints on the control rate, control intervals and rest intervals are reduced compared with previous results. • Average control width of AIC instead of the lower bound of all control intervals of AIC, is used to measure the small time delays and large time delays. • For the case of small time delays, the upper bound of time delays can be larger than the lower bound of control widths. This paper focuses on the stabilization problem of complex-valued hybrid stochastic delayed systems via aperiodically intermittent control (AIC). As for AIC in existing literature, strict conditions on the lower bound of control intervals and upper bound of control periods or the maximum proportion of rest intervals are required. In this paper, we relax these constraints by proposing average control ratio and average control period to describe the distribution of control and rest intervals of AIC, i.e., the lower bound of certain control widths can be arbitrarily small, upper bound of certain control periods can be very large and the proportion of rest widths can be any value in (0 , 1). Thus, the conservativeness is reduced compared with the existing related results. Then based on the complex generalized Itô's formula, several novel stabilization criteria are obtained for small time delays and large time delays, respectively, which avoid splitting the real and imaginary parts. Especially, for the case of small time delays, the upper bound of time delays can be larger than the lower bound of all control widths, which has wider applications than previous results. Finally, two examples along with their numerical simulations are given to show the effectiveness and less conservativeness of our results. [ABSTRACT FROM AUTHOR]