This paper presents the design, modeling, bench experiment, and road test of a retrofit regenerative shock absorber based on a permanent magnetic generator and a rack-pinion mechanism for the purposes of energy harvesting and vibration control. Results show that variable damping coefficients and asymmetric feature in jounce and rebound motions are achieved by controlling the electrical load of the shock absorber. Improved efficiency and reliability are achieved by utilizing a roller to guide the rack and preload on the gear transmission to reduce the backlash and friction. A peak power of 68 Watts is attained from one prototype shock absorber when the vehicle is driven at 30 mph on a fairly smooth campus road.
- Dynamic Systems and Control Division
Design, Modeling, and Road Tests of Electromagnetic Energy-Harvesting Shock Absorbers
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Li, Z, Zuo, L, Luhrs, G, Lin, L, & Qin, Y. "Design, Modeling, and Road Tests of Electromagnetic Energy-Harvesting Shock Absorbers." Proceedings of the ASME 2012 5th Annual Dynamic Systems and Control Conference joint with the JSME 2012 11th Motion and Vibration Conference. Volume 3: Renewable Energy Systems; Robotics; Robust Control; Single Track Vehicle Dynamics and Control; Stochastic Models, Control and Algorithms in Robotics; Structure Dynamics and Smart Structures; Surgical Robotics; Tire and Suspension Systems Modeling; Vehicle Dynamics and Control; Vibration and Energy; Vibration Control. Fort Lauderdale, Florida, USA. October 17–19, 2012. pp. 675-684. ASME. https://doi.org/10.1115/DSCC2012-MOVIC2012-8734
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