Characteristics research on energy-harvest semi-active seat suspension with magnetorheological damper

In view of the disadvantages of tradition seat suspension comfort and large energy consumption of the semi-active seat, an energy-harvest magnetorheological semi-active seat suspension based on piezoelectric structure is proposed. The three degree of freedom vehicle seat suspension model and the piezoelectric cantilever beam energy-harvest simulink model are established, and the force characteristic curve of the MR damper is obtained through the experiment. The simulation results show that, when the vehicle speed is 60Km/h, a single piezoelectric cantilever beam energy-harvest power is 0.7046W, total energy-harvest power is 46.79W, energy-harvest efficiency can reach 29.74%. Piezoelectric energy-harvest test shows that a single piezoelectric cantilever beam energy-harvest power is 0.5465W, verified the feasibility of magnetorheological seat energy harvest structure.