Study on Independent Tuning Damping Characteristic by Coupling of Electromagnetic Dampers for Automobiles

A comprehensive comparison of the vehicle vibration energy harvesting abilities of the regenerative shock absorbers predicted by the quarter, half and full vehicle suspension system models

“…Indirect-drive RSA are equipped with rotary motor which requires the conversion of the linear motion of the shock absorber to rotary motion of the motor. The conversion can be realized through hydraulic pipe [11] [12] [13], rack and pinion mechanism [14,15,16,17], arm-teeth mechanism [18,19], ball screws mechanism [20,21,22,23,24,25,26] and etc. During the conversion process the motor rotation speed is always amplified.…”

“…The effects of vehicle speed and road profile have been studied based on the quarter VSS model [34]; however the interference between the movements of front wheel and rear wheel limits the prediction accuracy of the quarter VSS model. Therefore many studies have used a half VSS model to include the vehicle pitching motion mode [20,35,36]. Wei et al [37] studied the energy dissipation on the front wheel and the rear wheel suspensions of a half VSS model over different types of road.…”

Review of Passive Electromagnetic Devices for Vibration Damping and Isolation

“…Main application fields for EMSDs are microvibration [47], low-frequency energy harvesting [48][49][50][51][52], mostly for microelectronics applications, and regenerative shock absorbers mostly for vehicle applications [53][54][55][56][57]. Other applications like human motion energy harvesting or combined with tuned mass absorbers [58][59][60] can be also found.…”

A Comprehensive Review of the Techniques on Regenerative Shock Absorber Systems

“…Ball screw mechanism was introduced as an alternative by many researchers [52][53][54][55][56], the schematic is shown in Figure 13. Similar to the rack and pinion system, it also converts the up and down motion into a rotational motion through a ball screw spinning along the thread.…”

“…Fukumori, Hayashi [52,103] conducted the experiments using coupled electromagnetic dampers dampers that can tune the bouncing and rolling modal frequencies of the vehicle independently through a variable external resistor, the schematic of which is shown in Figure 31. However, the voice coil motor was used in the experiment instead of the originally proposed ball-screw regenerative shock absorber system, therefore the energy harvesting performance was not able to be evaluated under the condition where the ride comfort was optimized.…”