南通职业大学毕业设计外文翻译A, count to control a system development trendDevelop a first on trial sex number to control system from 1952 American M.I.T., have already walked through 46 calendar distances till now.The number controls system from at the beginning of the electron tube type start, experience following several deveolp step:Cent the number of the small scaled super tiny machine type of the large scale integration of the calculator type of the large scale integration of the small scale integrated circuit of the sign type transistor type type type controls system.To the 80s, population development trend BE:The number controls apparatus to deveolp toward the CNC from the NC;Extensively adopt 32 potential CPU the composition have another microprocessor system;Raise the integration degree of system, reduce volume, adopt mold mass to turn structure, easy to cut, expand to get stripe with function, satisfy the demand that the different type number controls engine bed;Drive apparatus to communicate, numeral turn a direction development;The CNC apparatus turns a direction development toward the artificial intelligence;The auto of adoption new model weaves distance system;Intensify correspondence function;The number controls system reliability to continuously raise.In fine, the number controls an engine bed technique to continuously deveolp, the function is more and more perfect and use more and more convenient, the reliability is more and more high, the function price compare also more and more high.To 1990, the whole world number controls system profession to produce a plant house to produce for year number control system about 130,000 sets.Abroad number control system technique the population of the development deveolp trend BE:1.The new generation number controls the system structure of the system adoption open typeGet into 90s and technically fly to soon deveolp because of the calculator and push number control the faster renewal of the engine bed technique to change generation.Many numbers control the new generation number of soft system structure of the development open type of the hardware resources which makes use of PC machine abundance of the system production plant house to control system in the world.The structure of open type system makes the number control system to have better and in general use, gentle, adaptability, expand sex, and turn toward the intelligence, the network turn a direction to consumedly deveolp.The last few years many nations study development this kind of system in succession, such as American science production the centre(NCMS) and air force together leads ofthe next generation controller system of the work station/engine bed structure NGC, the structure of open type system in the automatic system OSACA of total body in Europe, Japan of OSEC program etc.The development research result has already got application and have adopted open type system structure in it the production of process the centre, the number control the miller, the number control the lathe etc. the product since 1995 such as the Cincinnati-Milacron company of A2100 system.The structure of open type system can in great quantities adopt the advanced technique of in general use and tiny machine, like multi-media technique, carry out a voice to control an automatic plait distance, sketch to scan an automatic plait distance etc.The number controls system to follow to deveolp toward high integration degree direction, can integrate more transistors on each core plate, make system volume smaller, smaller scaled turn, miniaturization.The reliability consumedly raises.Make use of have another CPU advantage, carry out accident to automatically expel;Intensify correspondence function, raise into the line, allied net ability.The new generation number of the open type system structure controls system, it hardware, software with total wire gauge all of Fans be outward open, in order to being ample soft, the hardware resources can be provided as exploitation, not only make number control the system manufactory and customer carry on of the system integration get emollient support, and also bring for the customers two developments biggest convenient, promote number control many file time of system, have another the development of species with extensively applied, since can pass to rise file or tailor a number of constitute various file time to control system, and then can pass to expand to constitute the number that the different type number controls engine bed to control system, develop production period to consumedly shorten.This kind of number controls system and can get stripe but get stripe with the CPU, need not fluctuate on the structure.2.The new generation number controls the function of system control to consumedly raiseThe number controls system to turn a development toward the intelligence in controling function.Along with artificial intelligences osmosis and development in c