Regenerative Damper With an Optimally Tuned Resonant Circuit

Abstract

A new energy regenerative type vibration damper and suspension systems have been introduced by the authors. However, it produces higher harmonic disturbing force to the vibrating system caused by the nonlinear property of regenerative circuit. For the small amplitude, it does not produce damping force and the energy is not regenerated. This paper introduces a new idea of using a resonant circuit between the actuator and the regenerative circuit. For the frequency range near the resonancy, the regenerative voltage is amplified and the efficiency will be improved. The circuit also decreases the undesirable higher harmonics to the damping force. For analitical simplicity, a resistance is installed instead of regenerative circuit and an optimal tuning condition of the resonant circuit is developed. A simple experimental setup is made. The results are showing high potential of improving the regenerative damper by using resonant circuit.