main feed system 中文意思是什麼
main feed system
解釋
主給水系統-
By detailedly analyzing the control problem caused by the time - delayed characteristic of main - steam temperature, the fact that a well - designed feed - forward effect can supply the want of the feedback effect and solve the control problem of long time - delayed system was put forward
通過對電廠主蒸汽溫度的大遲延特性導致的控制難題的詳細分析，提出合理設計的前饋控製作用能彌補反饋控製作用的不足，可以有效地解決大遲延系統的控制問題。 -
This paper put forward a method of using amending sine value in the spwm sine table. this method can correct the distortion of the output voltage waveform, which resulted from the dead time used to the voltage type whole bridge main circuit. the inverter system adopts digital fuzzy controller with feed forward correction and which proportion coefficient and integral coefficient is changeable, so dynamic response is improved
本文提出了一種採用修補spwm正弦表值的方法，用以改善電壓型全橋逆變主電路因上下橋的功率器件切換時先關斷后導通的死區時間而引起的輸出電壓波形畸變；逆變系統採用帶前饋校正的變比例變積分系數的模糊控制器，提高了系統的動態響應指標；系統設計了完善的保護措施，並具有市電電網的故障診斷功能。 -
The spindle is supported by high - accuracy rolling bearing ; the frequency governor imported from abroad is used in the main drive system to realize stepless speed regulation and constant linear cutting functions ; the bed is supersonic frequeney hardened, plastic coated guide ways are used for the carriage ; and stepping motor of acservo motor are used x and z axis to realize feed movement via the ball screws
主軸採用高精度的滾動軸承支承；主傳動採用進口變頻調速器，實現無級調速功能及恆線速切削功能；床身採用超音頻淬硬處理，採用貼塑導軌； x軸和z軸均採用步進或伺服電機，通過滾珠絲杠，實現進給運動。 -
In industrial production, cycloconverter - feed synchronous motor vector control system has already been developed to be a certain trend of large rolling mill main drive. but its harmonic problem can not be ignored when running this system
在工業生產中，交-交變頻同步電機矢量控制系統已經成為大型軋鋼機主傳動發展的必然趨勢，但該系統運行時注入電網的諧波問題不容忽視。 -
Of those, the main function of graphical user interface module is to manage graphical user interface and interface programming. the main function of design and compute module is to taking on selecting the construction, the parts and checking the design results of servo feed cad system. the main function of graphics system is to draw the assembly graphics of servo feed system by the design results
其中界面系統部分進行統一的界面管理並組織相應的介面程序；科學計算部分承擔伺服進給系統結構選型、零部件選取和校核計算；圖形系統能根據計算部分的結構參數繪制出相應的各部件設計圖紙及裝配圖；數據庫負責保存相關的設計數據、圖表和繪好的圖表。 -
This article introduced the application of expert predictive control technology in the eva foam machine. according to the characteristic of multi - objects and big perturbation in the practical system, the forward feed expert gpc - pid control strategy is proposed. this paper has explained the main reasons of adopting this kind of control strategy and testified its feasibility theoretically. the correctness of this control strategy in practice has also been proven
針對實際系統對象過多、擾動較大的情況，提出了前饋專家gpc - pid的控制策略。本文闡明了採用前饋專家gpc - pid控制策略的主要原因，在理論上論證了該方法的可行性，並且通過在實際應用上所取得的理想的控制效果驗證了該方法的正確性。 -
For the long time - delayed characteristic of main - steam temperature object in power plant, a mainsteam temperature cascade control system with a feed - forward controller was proposed
摘要為了解決電廠主蒸汽溫度系統的大遲延問題，提出了一種帶神經網路前饋控制器的主蒸汽溫度串級控制系統。
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