2020/05/12 by Kaian Chen, Chen, Kaian, Zhaojian Li +7
Computer Science · Engineering · #Innovative Energy Harvesting Technologies #Magnetic Bearings and Levitation Dynamics #Vibration Control and Rheological Fluids #cs.SY #eess.SY
paper · pdf · doi:10.48550/arxiv.2005.05728
To be published in ACC2020
arxiv created 2020/05/12 · arxiv updated 2020/05/13
Simultaneous vibration control and energy harvesting of vehicle suspensions has attracted great research interests over the past decades. However, existing frameworks tradeoff suspension performance for energy recovery and are only responsive to narrow-bandwidth vibrations. In this paper, a new energy-regenerative vibration absorber (ERVA) using a ball-screw mechanism is investigated. The ERVA system is based on a rotary electromagnetic generator with adjustable nonlinear rotational inertia which passively increases the moment of inertia as the vibration amplitude increases. This structure is effective for energy harvesting and vibration control without increasing the suspension size. Furthermore, a nonlinear model predictive controller (NMPC) is applied to the system for further performance enhancement where we exploit road profile information as a preview. The performance of NMPC-based ERVA is demonstrated in a number of simulations and superior performance is demonstrated.