This paper discusses and analysis the constant voltage of vehicle applied permanent magnet generator. The permanent magnet can produce magnetic field in an air gap with no excitation winding and no dissipation of electric power, when the rotor turns, the magnet field turns, the generator generates electricity, with the permanent magnet material of high remnant magnetic induction and the optimized design of the generator, the output voltage is improved when the engine at low speed. We develop a single-phase double half-wave electric regulator is to ensure the stability of the output voltage and can direct output direct current.

A new type of tire building drum based on parallel mechanism was presented and the analysis of the structure was carried out.The calculation of dof and the output motion type analysis and positive solution and inverse solution were included. Solid model of the mechanism was set up and the trajectory analysis was conducted using software of UG and MATLAB, which provided theoretical base for optimal design application of the mechanism.

The kinematics simulation of 6-PURU parallel mechanism was made based on dynamics simulation analysis software ADAMS, and the simulation method and steps were introduced too. Using UG to establish 6-PURU parallel mechanism soiled model, and the geometry model parasolid format was payloaded to ADAMS environment and established virtual prototyping model, by added some drivers and SPLINE curves, the model was conversed with positive kinematics simulation. This method avoided to establish and solve complex kinematics equations, simplified the design and development work of the parallel robot, but also provided theoretical basis for adjustment and control of prototype.