Universal power supply systems

Coal mine has humidity, high temperature, flammable gas, coal dust and other big issues, in which the boring machine, scraper conveyor, belt conveyors, fans, pumps, hoists and other equipment should be driven by explosion-proof three-phase asynchronous motors. Whats worse, the universal converters are forbidden to use directly in these occasions, and these equipment s control methods are direct start and mechanical speed control, which will cause a great Impact to the current and voltage of the power supply system. ... 

The electronic block, which includes block of the analysis and registration and control system engines, and block of the source-receiver of acoustic oscillations are universal for any installations of this type. As the source-receiver of acoustic oscillations the ultrasonic flow detector is usually use. It s, as a rule, the serial devices for example y/f2-12. The electronic block contains the microprocessor device or PC, device of the power supply and management of engines... 

Moldrik, P. Gurecky, J. 2006. The system of RC switching elements improving reliability of power supply and questions of their location in distribution networks. Proc. of confa-ence EPQSR, Tallinn University of Technology, Estonia. 

Comparing universal roll system performance to systems utilizing Hypalon , silicone, and epoxy covered rolls, the higher efficiency ceramic coating requires less power to achieve the same surface tension results, therefore reducing the cost of the power supply required. 

The current protot3rpe system includes three Expert modules, the IR Expert, the STIRS Expert, and the Human. All modules are written in Lisp. The IR Expert is a rule-based infrared interpreter which we have developed. The STIRS Expert is an interface to the STIRS program, a pattern-matching mass spectrum interpreter developed by McLafferty and coworkers at Cornell University, which is written in Fortran. () ) The interface translates the output of STIRS into a form palatable to our program, and handles the message-passing protocol required by the Controller. The Human module controls communication with the user. It allows user-supplied elemental or substructure information to influence the course of the analysis. The power of... 

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