Integration Design and Optimization Control of a Dynamic Vibration Absorber for Electric Wheels with In-Wheel Motor

Abstract

This paper presents an integration design scheme and an optimization control strategy for electric wheels to suppress the in-wheel vibration and improve vehicle ride comfort. The in-wheel motor is considered as a dynamic vibration absorber (DVA), which is isolated from the unsprung mass by using a spring and a damper. The proposed DVA system is applicable for both the inner-rotor motor and outer-rotor motor. Parameters of the DVA system are optimized for the typical conditions, by using the particle swarm optimization (PSO) algorithm, to achieve an acceptable vibration performance. Further, the DVA actuator force is controlled by using the alterable-domain-based fuzzy control method, to adaptively suppress the wheel vibration and reduce the wallop acting on the in-wheel motor (IWM) as well. In addition, a suspension actuator force is also controlled, by using the linear quadratic regulator (LQR) method, to enhance the suspension performance and meanwhile improve vehicle ride comfort. Simulation results demonstrate that the proposed DVA system effectively suppresses the wheel vibration and simultaneously reduces the wallop acting on the IWM. Also, the alterable-domain-based fuzzy control method performs better than the conventional ones, and the LQR-based suspension exhibits excellent performance in vehicle ride comfort.

Speed Synchronous Control of Multiple Permanent Magnet Synchronous Motors Based on an Improved Cross-Coupling Structure

“…In Figure 2, the tracking error ∆ω i is much larger than the compensation value β i , according to Equation (3), and e i is very large during the start-up of a multi-motor with load, thus making the amplitude-unlimited output of electromagnetic torque T ui much larger than the saturation value. However, the output of the speed loop controller generally contains a limiting part because of the system's safety requirements.…”

“…With the development of modern industry, the synchronous control of multi-motors has been widely used in robotics, electric vehicles, steel rolling, papermaking, and other fields [1][2][3][4][5][6][7][8]. Shortening the start-up time and improving the synchronization performance of multi-motors are of both theoretical and practical significance for enhancing the control accuracy and stability of the system [9][10][11][12][13][14][15].…”

Effect of electric battery mass distribution on electric vehicle movement safety

“…The results showed that the impact of the vertical force of in-wheel motors greatly affected the vibration stability of the EV. Therefore, the isolation between the axle of the wheel and the bearing of the rotor had been added to reduce the EV's vibration and increase the EV's stability [3,7,8]. To further improve the ride comfort and stability of the EV, the vibration isolation of the in-wheel motor and EV's suspension system were then controlled [7,9].…”

Design and analysis of driving motor system for hybrid electric vehicle

“…As the most popular means of traffic and transportation, automobile plays an increasingly important role in people's life and industrial production [1]. To a certain extent, Hybrid electric vehicle has injected new vitality into the automobile, and gradually become the century cleaner, efficient and convenient vehicle, and the driving motor system is the cornerstone to guarantee the performance of hybrid electric vehicle [2][3][4]. Excellent driving motor system is of great significance of the development of hybrid electric vehicles.…”