Parameter Optimisation of Power Regeneration on the Hydraulic Electric Regenerative Shock Absorber System

Peng Zheng,Jingwei Gao,Xiang Zhang,Ruichen Wang

doi:10.1155/2019/5727849

Abstract

With the increasingly prominent energy issues, regenerative shock absorber has attracted intensive attention in last two decades for the development of structure design. However, the researchers sometimes concentrate on conceptual designs without considering optimal parameter refinements. This paper proposes a regenerative shock absorber called the “hydraulic electric regenerative shock absorber (HERSA)” which includes an analytical regeneration performance parameters optimisation approach to promote the regeneration efficiency and regenerated power. The developed HERSA model is able to convert oscillatory motion into unidirectional rotary motion through the alteration of hydraulic flow while recovering power by a generator. The proposed model is also capable of obtaining the optimal parameters at certain condition, as well as providing the flexibility of different component combinations to match specific system need. The results demonstrate that the proposed model can effectively decide the optimal parameters in the system, and also the recoverable power can achieve average power of 331 W at 1 Hz-25 mm sinusoidal excitation in the system, which is approximately 65% efficiency. This study can be further used to guide prototype design in future study.

Highlights

With the rapid development of the global economy, vehicles have been popularised by millions of households
It is clear that the change of component combination can significantly affect the system dynamics and regenerated power level to meet the demands of various vehicle suspension systems
By changing the component combinations, the maximum regenerated power of 417.5 W with the regeneration efficiency of approximately 53.4% can be achieved on test 1

Summary

Introduction

With the rapid development of the global economy, vehicles have been popularised by millions of households. The explosion of vehicles has led to huge energy consumption and serious environmental pollution. Only 10% to 16% of the fuel energy has been utilised to provide proportion on driving. Most of the energy is wasted on road roughness and thermal exhaust. The kinetic energy loss by shock absorber/damper is the main energy dissipation [1]. In the past two decades, many researchers have done plenty studies on regenerative shock absorber to achieve the goal of energy recovery and the reduction of dissipation.

Methods

Results

Conclusion