For the problems of unstable starting torque and inaccurate driving track for gravitational potential energy car

based on the exact solver of Matlab software

the approximate trajectory of the mathematical description for four agencies gravitational potential energy car are given.The optimized structure size of rear-wheel car is obtained.Simultaneous analysis of movement characteristic is carried out and a new adjustable fixed ratio pulley is designed.The feasibility of actual travel path through the design method is verified

a new method of Locus structural optimization reverse design is proposed.