A Novel Controllable Electromagnetic Variable Inertance Device for Vehicle Vibration Reduction

Publication Type:
Conference Proceeding
Vibration Engineering for a Sustainable Future: Active and Passive Noise and Vibration Control, Vol. 1, 2021, 1, pp. 103-110
Issue Date:
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In this chapter, a novel electromagnetic variable inertance (EMVI) device is designed for vehicle vibration reduction, which consists of a controllable damper and an inerter in serial. First, the composition of the EMVI system is introduced and its mathematical model is established. Next, based on the time and frequency domain simulation, the control methods and dynamic control effects of the EMVI device are studied. Simulation results show that the EMVI device can achieve variable inertance by PWM signal control. To verify the performance of the EMVI device for vehicle suspension, a quadratic optimal controller was designed for real-time control of the EMVI suspension. The overall performance of EMVI suspension and conventional suspension under sinusoidal and random road excitation is compared. The results confirmed that the EMVI device can improve the suspension performance of a vehicle. Furthermore, it can effectively reduce the vibration of the vehicle body in the frequency range of 1 to 3 Hz.
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