programmable logic controllers 中文意思是什麼
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It is generally well known that controlling temperature accurately and with fast process response times presents practical difficulties to standard programmable logic controllers
眾所周知準確地控制溫度和與快速的處理實際的問題使用標準可編程序邏輯控制器。 -
Abstract it is generally well known that controlling temperature accurately and with fast process response times presents practical difficulties to standard programmable logic controllers
眾所周知準確地控制溫度和與快速的處理實際的問題使用標準可編程序邏輯控制器。 -
A n lh control system structure, based on high speed ethernet, field bus, programmable logic controllers and general purpose pcs, is proposed. after analyses of the key control elements - temperature and composition, the thesis gives detailed design of the main system control functionalities : electrode control system, alloy material adding control system and operation monitoring system
在此基礎上，提出了基於工業高速以太網、現場總線、可編程邏輯控制器、通用工業pc的系統結構方案。分析了lf爐的關鍵要素? ?溫度控制和成份調節，對電極控制系統、合金加料系統及操作監控系統等主要控制系統功能進行了詳細設計。 -
The forerunner of teco sa was taian electric, which was founded in march 1969 and merged with teco in oct 2003. ever since its establishment, sa never stops making contribution towards the industrial automation technology. sas products include ac dc motor controls, molded - case circuit breakers, high low voltage electric material, engines, generators, switchgears, ac dc frequency inverters, programmable logic controllers and servo controllers
電控事業部的前身為臺安電機，自1969年3月創立至2003年10月與東元合併迄今，一直秉持著穩健踏實的態度，以電磁開關無熔線斷路器高中低壓配電器材引擎發電機組配電盤變頻器可程式控制器及伺服控制器等產品，為工業發展奉獻心力，滿足最基礎的用電安全，並提供整體性的自動化服務，符合節約能源的世界性潮流。 -
Power bond graph is used to established the bond graph model of the lifting and dropping of hydraulic pile hammer and state space equation in the paper for hydraulic pile hammer is perplexing nonlinear system. in order to attain the graph that pressure, position, velocity, acceleration vary with time in the course of driving pile simulation procedure solving state space equation is designed on the basis of combining four - order runge - kutta method with predicator - corrector method, dynamic simulation of the hydraulic system is studied in matlab 6. 5. it is convenient to analyse dynamic characteristics of the hydraulic syste m, beneficial to the design and parameter optimization of the hydraulic system. in the final part of the paper, under detailed analysis of the control characteristics for double - acting hydraulic pile hammer with double cylinders, control system based on the programmable logic controllers founded on technology of modern compute is designed
由於液壓打樁錘液壓系統是一個復雜的非線性系統，本文採用功率鍵合圖法建立液壓打樁錘上行、下降的鍵合圖模型和狀態空間方程，通過四階龍格?庫塔法和預估?校正法相結合編制了模擬程序對狀態空間方程求解，在matlab6 . 5中進行液壓系統的動態模擬，獲得液壓打樁錘運動過程中壓力、位移、速度、加速度等隨時間變化的曲線圖。此曲線圖方便了對液壓系統動態特性分析，為液壓系統的設計和參數優化提供了有益的借鑒。最後，在深入分析雙缸雙作用液壓打樁錘控制系統的功能要求后，採用了以現代計算機技術為基礎的新型工業控制裝置? plc可編程式控制制器，設計出了雙缸雙作用液壓打樁錘的電器控制系統。 -
This paper emphasizes system constitutes, programme methods, hadware composing, communication networks of simatic s7 - 300 plc and their applications. the s7 - 300 series is a line of micro - programmable logic controllers that can control a variety of automation applications
本文著重討論了鋪排船控制系統中使用的simatics7 - 300plc的系統結構、編程方式、硬體組成、通訊組網以及它們的應用。 -
Completed the initialization of can parameter for the communication card and conversion card by compile setting program. designed communication program to actualize the supervision and control of programmable logic controllers by upper computer
使用專用can介面庫函數編寫設置程序完成了對介面卡、 can485轉換卡的can參數（如濾波方式、通訊模式、驗收碼和屏蔽碼等）的初始化設定。 -
So, in order to resolve those problems above, this paper puts forward some proposals as follows : to establish the computer control system of offshore platform seawater treatment process based on dcs, the industrial programmable logic controllers ( plc ) as the local control layers of the system are applied to control distributing units of the seawater treatment process, and to develop the relevant real - time computer monitoring and controlling system applied to the central control layer to realize all - sided monitoring and controlling for the seawater treatment process, and to realize dynamic simulation. and relevant data management system is developed to realize effective data management
因此，針對該平臺水處理工藝所存在的以上問題，本文提出了以下解決方案：為平臺的整個水處理工藝構建基於dcs的計算機控制系統，其系統下位採用工業可編程式控制制器plc實現對過程現場的分散控制，並開發相應的上位實時計算機監控系統實現對整個水處理工藝的全局監控與實時動態模擬，且創建相應的數據管理系統實現對過程現場的工控數據進行有效管理，為平臺水處理工藝的靜態最優化生產獲取資料依據。
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