Saturation-Tolerant Quantized Control for Nonlinear Stochastic Systems With Nonfragile Performance

This brief proposes a saturation-tolerant quantized solution for the output tracking problem of nonlinear stochastic systems. Based on the auxiliary system that establishes a feedback connection from input saturation to output constraint, an innovative saturation-tolerant prescribed performance control is constructed, such that the modified performance boundaries can not only quantitatively steer steady-state accuracy, settling time and overshoot, but also be endowed with a flexible adaptability to input saturation. With the hysteresis quantizer (HQ) to convert continuous control actions to finite discrete scalars, the resulting saturation-tolerant quantized controller remains a reduced transmission burden. Finally, simulations verify the feasibility of theoretical method.