Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
SELF-POWERED ACTIVE SUSPENSIONS ON SMART VEHICLES
Submission Author:
João Victor Pereira da Silva , SC
Co-Authors:
José Carlos Pereira, João Victor Pereira da Silva
Presenter: João Victor Pereira da Silva
doi://10.26678/ABCM.COBEM2017.COB17-0286
Abstract
Due to the limitations of electric energy suppliers in electric car systems, energy recovery from induced vibration in vehicle suspension has gained considerable attention by researchers in recent years. Among the new technologies investigated for this application in automotive fields, the piezoelectric vibration energy harvesting device has increased enormously. In this context, this paper presents an evaluation on the comfort improvement in a self-powered active double-wishbone type vehicle suspension with a piezoelectric element as the conversion mechanism and a simple actuator as the restored force. A mathematical model for the suspension is developed and modal analysis is used to compute the results. The performance is calculated based on an impact load from the road surface. The control system in calibrated as so the power requirement is the same as the generated power. The regenerated value reaches almost 80W RMS and, when it is fully reintroduced into the system, reductions of up to 20% in the RMS value of the vertical acceleration, main comfort parameter, along with 15% improvement in the displacement and over 50% reduction of the settling time are observed.
Keywords
Active suspension, Double-Wishbone, Self-Powered, Piezoelectric
