The simulated and experimental results show that the permanent magnet arrangement on the stator or on the armature has little effect on the dynamic performance for making course.

From two aspects of the mechanical erection-adjustment and electric speed regulation, this paper analyzes on the causes of the vibration and noise of the elevator, and probes into some measures that should be taken for increasing the confortability effectively based on this analysis.

The kinematic model of wheel loader is called bucket manipulator,and it has three closed loops.

Design of An assembly manipulator with soft-and-mobile paw and parallel wrist;

A control system of assembly manipulator is developed and designed in this paper,which is based on ISA bus and paralled port chips,from the point of the assembly manipulator structure and working demand.