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In this paper, the event-triggered active disturbance rejection control(ADRC) is first addressed for a class of uncertain lower triangular stochasticsystems driven by bounded noise and colored noise. The event-triggered extendedstate observer (ESO) and ADRC controller are designed, where two respectiveevent-triggering mechanisms with a fixed positive lower bound for theinter-execution times for every sample path solution of the stochastic systemsare proposed. The stochastic total disturbance representing the coupling ofnonlinear unmodeled dynamics, external deterministic disturbance, boundednoise, and colored noise is estimated in real time by the event-triggered ESOand compensated in the event-triggered feedback loop. Both the mean square andalmost surely practical convergence of the closed-loop systems is shown withrigorous theoretical analysis. Finally, some numerical simulations arepresented to validate the theoretical results.

Event-Triggered Active Disturbance Rejection Control for Uncertain Lower Triangular Stochastic Systems