Coupling Mechanism of Quasi-Zero Stiffness-Based Simultaneous Vibration Isolation and Energy Harvesting for Suspension Systems

The chapter investigates the dual functionality of suspension systems in automobiles, which traditionally focus on load bearing and vibration isolation. It highlights the significant energy wastage in conventional suspension systems, where vibration energy is converted into dissipated heat, leading to inefficiencies in both fuel and electric vehicles. The text introduces the concept of simultaneous vibration isolation and energy harvesting (SVIEH) as a means to enhance energy utilization while maintaining effective vibration control. It delves into the structure and conditions of quasi-zero stiffness (QZS)-based SVIEH systems, presenting a detailed analysis of their electromechanical coupling equations and numerical solutions. The chapter explores the conflicting nature of vibration isolation and energy harvesting, demonstrating how key parameters such as system stiffness, damping ratio, and electromagnetic coupling coefficient influence these processes. Through extensive numerical simulations, it reveals the coupling characteristics and provides insights into potential solutions for decoupling these functions. The conclusions emphasize the urgency of addressing the relationship between vibration energy harvesting and vibration isolation, paving the way for future research and experimental testing in this innovative area.