Hybrid Sliding Mode Control for Dominant Dead-time systems based on a Sliding Surface with iterated integral terms

Dead-time is a common phenomenon in industrial processes, which can degrade the overall performance of a control system, causing poor setpoint tracking, slow disturbance rejection, and reduced control accuracy. This paper discusses a hybrid control strategy based on sliding-mode control and the Smith Predictor approach using a sliding surface with iterated integral terms. For evaluation, two examples are utilized: the first deals with a higher-order linear system characterized by substantial delay, emphasizing tracking, disturbance rejection, and referencing variable tracking. The second example pertains to experimental research conducted with the TCLab device.