This paper exhibits a robust speed controller equipped with a self-tuner for permanent magnet synchronous motors (PMSMs), taking nonlinearity and model-plant mismatches into account. The first contribution of the proposed technique is designing a self-tuner for updating the cutoff frequency of target speed dynamics. The second one is rendering the closed-loop system to recover the target tracking performance and remove the offset errors in the absence of integrators. A 5-kW prototype interior PMSM is used to experimentally verify the effectiveness of the proposed technique.
- Disturbance observer (DOB)
- performance recovery
- speed control
- time-varying cutoff frequency
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering