Research on energy-regenerative suspension based on WOA-PID algorithm

To enhance the effect of reducing suspension vibration and harvesting the vertical vibration energy of cars, a research was conducted on an energy-regenerative suspension with magnetorheological dampers (MRDs). First, an innovative structure of energy-regenerative dampers was developed, as well as mathematical and simulation models of the damping force and energy harvest. Subsequently, simulation experiments and bench tests were conducted. Based on these, mathematical models of a two-degree-of-freedom semi-active suspension were built, and a whale optimization algorithm- proportional integral derivative (WOA-PID) control algorithm was designed. Simulation experiments were conducted on the working conditions of white-noise and impact road surfaces. The obtained results indicate that the energy-regenerative dampers considered in this study have a certain energy-regenerative capability, and the WOA-PID algorithm exerts an optimal controlling effect on the suspension.