An Adaptive Sinusoidal Disturbance Rejection Controller for Single-Input-Single-Output Systems
نویسندگان
چکیده
Abstract: The design of an adaptive sinusoidal disturbance rejection controller for SingleInput-Single-Output (SISO) systems is presented in this paper. Sinusoidal disturbance rejection problems exist in industry applications such as velocity ripples in a CNC milling machine. The controller is first developed based on the Internal Model Principle (IMP) and the polezero placement technique, then a Gain Scheduled (GS) robust Two-Degree-of-Freedom (2DOF) regulator is constructed to eliminate the sinusoidal disturbances with known frequencies and to achieve a desirable tracking response simultaneously, but without estimating the amplitude and the phase values of the sinusoidal disturbances. Using the small gain theorem, the system stability radius is obtained for n slow time varying sinusoidal disturbances. Finally, the proposed controller is applied to eliminate the torque and velocity ripples in the Alternating Current (AC) Permanent Magnet (PM) motor control systems.
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