Energy harvesting effectiveness of an active horizontal seat suspension under random vibration of varying intensity

This study explores the energy harvesting potential of an active horizontal seat suspension system subjected to random vibrations of varying intensity. By integrating a Permanent Magnet Synchronous Motor (PMSM), traditionally used for vibration control, into the suspension system, the research demonstrates how mechanical energy generated during braking can be converted into electrical energy through electromagnetic induction. The proposed system employs a Field-Oriented Control (FOC) strategy with programmable servo-drives to achieve efficient torque control and energy recovery. Experimental and simulation analyses were conducted to evaluate key parameters, including braking torque, energy conversion efficiency, and system integration under vibrational loading. Results indicate that active and regenerative suspension systems outperform passive counterparts in terms of vibration transmissibility and ride comfort. Furthermore, regenerative suspensions provide the added advantage of energy harvesting without compromising stability. Limitations related to input amplitude and force saturation were identified, highlighting design considerations for future applications. This dual-functionality system represents a step forward in vibration control and energy efficiency for vehicle and machinery applications.