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Time-delay control problem for the system with an integrator becomes especially difficult when the disturbance input is a time-varying signal. This paper presents a nonminimum phase disturbance observer (DOB) approach to design a robust controller for input time-delay systems with time-varying disturbances. Position control problem for a simple pendulum system with input time-delay has been considered...
Time-delay and input disturbance frequently occur in control systems, which decrease the pre-defined performance of the closed-loop system. This paper presents an output feedback controller that compensates the performance degradation owing to time-delay and input disturbance. Simple adaptive control (SAC) and a new disturbance observer (DOB) approaches have been combined to achieve the control purpose...
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