The Characteristics Simulation Analysis of Power Split CVT Drive System for Vehicle Application
|School||Xi'an University of Technology|
|Course||Mechanical Design and Theory|
|Keywords||The power shunt CVT drive CVT Dynamic response characteristics Vehicle simulation Clutch|
In this paper, vehicle power split CVT drive system as the research object , the in-depth study of the system kinematics and dynamics performance and vehicle dynamics model and simulation analysis of its dynamic response , select and match its parameters valuable theoretical basis , as well as improve the power to shunt the CVT drive theory laid the foundation . Obtained through the analysis of the system 's transmission system steady-state variable speed range , depending on the parameters of the system transmission ratio principle of selecting different parameters of motor function and system matching principle ; further clutch speed characteristics , acceleration characteristic curve proposed together and optimization, and thus the optimal bonding parameters obtained under different initial speed input . Consider system shafting stiffness , damping , clutch semi - engaged system dynamics model , given the characteristic equation of the system , and thus analysis of the system is stable and the necessary and sufficient conditions ; thus power system school analysis shows that the response of the system under a unit step input , analysis of the values of the parameters of the system response . Further cars equipped with the system for the vehicle model , ideal state to meet the engine the best fuel economy conditions the vehicle dynamics model and simulation analysis , obtained the dynamic response of the vehicle , and the response the results were compared and analyzed . In addition, the impact of the situation in relation to vehicle dynamic response analysis, derived engine the best fuel economy requirements CVT ratio change response characteristics ; further on the dynamic response of the system the reverse analysis ; final analysis of the dynamic response of a system planetary transmission structure type car , which gives the system to achieve optimal transmission efficiency and fast response pathways .