Mainly introduces the coal mine hoister 1140V/500KW explosion-proof intrinsically safe 4-Quadrant variable frequency variable speed electrical control device actualize process and the solution technical key.

Dual PWM AC-DC-AC variable-frequency adjustable-speed system in mine hoist;

Study on comprehensive safety control strategy for mine hoist;

Application of PLC and 6RA70 to TKD system rebuilding of mine hoist;

Development study of PC electric control device for mine hoister;

A new type of digital phasometer applied to the infrared laser position-tracking system of mine hoister is introduced, which is based on FPGA and FFT algorithm.

A new type of digital phasometer applied to the infrared laser position-tracking system of mine hoister is introduced in the paper,which is based on FPGA and FFT algorithm.

The adjusting speed in a series of the controllable silicon of the mine elevator electron control system is realized by importing regulable accessional Potential in the rotor loop of a bobbin asynchronism electromotor,and using the charge transfer efficiency.

This paper presents the displacement solution to mine elevator viscoelastic vibrating equations and the kinetic tension calculation method,discusses kinetic tension characteristics under rectangular,ladder shaped,sinusoidal and parabolic acceleration curves,provides ways to limit or even avoid lifting rope viscoelastic vibration.

The mine elevator is called as the throat of mines, so it is vital equipment in mines.

The Computer Control Design for Mine Winder;

：By taking a practical example，this paper analyses the form of an automatic control system for mine winder，discusses the principle that the system works on，and the way to set up it.