Active Suspension System Energy Consumption and Engine Power Matching Control for Emergency Rescue Vehicles

Due to the mismatch between the active suspension system energy consumption and the engine power thus causing the fluctuations of pressure and flow in the hydraulic active suspension systems, and the engine over loaded even flameout, an active suspension system energy consumption and engine power matching control schemes was proposed herein. The conditions of ensuring stable operations of the engine and the active suspension systems were analyzed. In order to make the maximum power of the active suspension system less than the residual power of the engine in the current states, a control strategy of compensate the variable pump discharge control signals was proposed according to the average flow consumed by the active suspension systems. The fuzzy PID control methods were applied to design the power matching controller. The test results show that compared with the original active suspension systems, the average power consumption of the active suspension systems applied the proposed control schemes is reduced by 42%, the average torque percentage is reduced by 39.6%. The energy consumption of the active suspension systems and engine load are significantly reduced. © 2022, China Mechanical Engineering Magazine Office. All right reserved.