Prescribed performance synchronization control of dual-PMSM motion system via novel sliding mode control and adaptive extended state observer.

To address the challenges of parameter perturbations and load disturbances in dual permanent magnet synchronous motor systems, this paper proposes a control scheme integrating prescribed performance cross-coupling control (PPCCC), adaptive extended state observer (AESO), and novel sliding mode control (NSMC). Key innovations: (1) A hybrid sliding mode reaching law is designed, which dynamically adjusts the reaching speed through a combination of exponential and power terms. A sigmoid function is incorporated to effectively suppress chattering. (2) PPCCC is introduced to constrain the synchronization error's convergence rate and overshoot through a logarithmic barrier function transformation. (3) AESO with adaptive bandwidth estimates lumped disturbances for real-time compensation. Simulations and experiments verify that the scheme confines the synchronization error within preset bounds, suppresses disturbances effectively, and outperforms existing methods.