Analysis of Suspension Control Strategy of Wheel-track Composite Amphibious Vehicle Based on AMESim-Simulink

Amphibious vehicles are an important unit in amphibious transportation. However, the problem of vertical load control of amphibious vehicles on soft roads such as tidal flats and swamps still needs to be solved urgently. Based on a new configuration of wheel-track composite amphibious vehicle (W-TCAV), the coupling relationship between suspension control and vertical load on soft roads is analyzed, and its 1/8 hydraulic system of hydro-pneumatic suspensions is established; Under the condition of known vertical load distribution range, based on the AMESim-Simulink co-simulation platform, the control and tracking effects of two different control strategies are compared and analyzed. The simulation results show that compared with the PID control strategy, the effect of fuzzy PID control on the suspension hydraulic system is more desired, the control response speed to the desired vertical load is faster, and the tracking accuracy is higher. It provides a better control scheme for the suspension system and vertical load control of the W-TCAV.