Aiming at EHV/UHV transmission lines with shunt compensators, on the basis of detecting the resonant component at the terminals of the phase that is switched off a criterion to determine the fault nature of adaptive single-phase reclosing is proposed.

When a single-phase fault occurs on shunt reactor compensated EHV transmission lines,the elements,which compose the recovery voltage of the opened phase after the breaker tripping,include one more resonant component under transient faults than under permanent faults,so the fault nature can be distinguished by making an integral of the recovery voltage during a fundamental frequency cycle.

This dissertation starts with the basic transformation of a synergistic six degree of freedom motion base.

To counter the disadventage of three degree of freedom simulation of a flying vehicle, the six degree of freedom movement mathematical model is presented.

Design for the Six DOF Antenna System;

Study on X-ray detection device for six DOF aircraft brakes;

The six DOF platform is Parallel Mechanism, which has the advantage of big load capability, high rigidity and precision.

Study on 6-DOF Trajectory Simulation of Course Correction Projectiles;

Output Decoupling control of 6-DOF Parallel manipulator;

Shock response analysis of 6-DOF parallel motion platform;