plc英文翻译plc英文翻译.doc

外文文献原稿和译文Introduction PLC-Programmable Logic Controllers are widely used in recent years the field of industrial control Such as metallurgy, steel, production lines, etc Its main feature is its stable performance, high control precision and easy maintenance. With PC connection, compiled in the production process according to the corresponding program will convert digital signals into analog signal input commands output instructions to control the implementation of components to achieve automatic control purposes. Currently, the main aspects of the music program-controlled fountain imported lighting console and its matching control decoder, once the failure is not easy to repair, the price is more expensive. Using PLC technology, you can use an ordinary PC to replace imported lighting control, easy maintenance, low cost PLC article on how to use music technology to analyze the problem of program-controlled fountain. PLCs programmable fountain Fountain is the use of the work produced by the pump pressure, nozzle jet out from the water column, the number of pumps in accordance with a certain type, location, installation, combining different types of nozzles, can have a variety of flower. We can each pump as a working point, programming, the module through the PLC to control each point, that is, through the implementation of the loop on each pump, or gear engagement control, to control the pump The purpose of the work of the state. To demonstrate the artistic fountain, usually accompanied by a corresponding track, according to the rhythm of the selected track speed, cadence, the preparation of the appropriate pump control procedures to reflect the musics meaning. The most important aspect is the time synchronization, the music is about playing time based on rhythm and sense of music divided into several time periods, the preparation of the corresponding time period in each of the pumps, lighting control program, the precision adjustment of track time and PLC accuracy o