Technology for mine intrinsic safe full digital camera, recorder and player combination;

Design and application on drive circuit of full digital inverter based on FPGA

In this paper, the first full digital rectifier control system based on SIMADYN D is designed for 230kA DC power supply system of electrolytic aluminium at some aluminium corporation in china.

Then, flaw of existing full-digital voltage commutation method is pointed out after the change of the critical area which switch sequence will encounter corresponding to the variety of displacement angle at the input-side of converter has been explicated, then several rules have been presented and used to instruct detailed voltage commutati.

In order to overcome the current technical backward condition of blast-hole-drill in china,a full-digital DC SR system of mining blast-hole-drill is developed by using Intel 16-bit 80196CKC monolithic computer.

This paper uses TI company special-purpose on TMS320F240 type Digital Signal Processor (DSP) that controls electrical machines as the core, designs and develops software and hardware of the full-digital PMSM vector control speed adjustment system which reduces system, and elevates its availability.

In this paper, study on all-digital control IGBT inverter arc welding power source for robot is developed to bring robot's advantages into full play.

A constant-speed system of BLDCM with all-digital phase-locked loop was designed.

We propose a hardware design for an all-digital AC variable speed control system.

As the newst alternative current transmission form,digital vector-controlling frequency-converting transmission has shown great advantage.

With the electrical-source kinds, deepply introduced three kinds electrical-source, UPS electrical-source internet, intelligent, new digital technique and the direction developping.