Research on electromechanical-magnetic coupling dynamics and robust predictive control of eccentricity in hub motors

doi:10.16731/j.cnki.1671-3133.2025.05.018

Abstract

Abstract: To address the ride comfort degradation caused by hub motor rotor eccentricity in Hub Motor Driven Electric Vehicles (HMD-EV),an H₂/H_∞ Robust Model Predictive Control (RMPC) strategy for an active suspension system based on a Particle Swarm Optimization algorithm (PSO) is proposed. Firstly,a vertical-lateral dynamic coupling model of the HMD-EV is established,and the key factors such as radial and tangential magnetic field distortions and Unbalanced Electromagnetic Forces (UEF) resulting from the rotor′s static eccentricity are thoroughly analyzed. The dynamic interaction between the rotor eccentricity in the permanent magnet synchronous hub motor and the electromechanical-magnetic coupling under external disturbances is studied. An active suspension PSO-H₂/H_∞ hybrid controller,optimized by feedback gain matrix (K),is designed. Simulation results demonstrate that the controller effectively mitigates the adverse effects of electromechanical-magnetic coupling in HMD-EV,significantly improving the vehicle′s ride comfort and smoothness.

Key words: hub motor drive, unbalanced electromagnetic force, unsprung mass, ride comfort indicators

CLC Number:

U461

HUANG Kaiqi, XIONG Yi. Research on electromechanical-magnetic coupling dynamics and robust predictive control of eccentricity in hub motors[J]. Modern Manufacturing Engineering, 2025, 536(5): 144-152.

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