The hydro-mechanic differential turning system is a new double power flow turning system for tracked vehicle.Based on the system structure and working principle analysis

the mathematical model and Simulink model of hydro-mechanic differential turning system including engine

hydraulic close loop system

planet row

load and etc are established by means of dynamics principle and modular modeling method.Referencing the prototype

the dynamic response performance of hydro-mechanic differential turning system is simulated and tested.Contrasted with the experimental results

the model can efficiently describe the hydro-mechanic differential turning system performance.The system performance change rule of different operation parameters is simulated and analyzed.The theory basis of performance analysis and control research of hydro-mechanical differential turning system for tracked vehicle are provided.