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

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.