stand-by frequency 中文意思是什麼
stand-by frequency
解釋
預備頻率-
On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced
在推力矢量試車臺設計方面，設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案，提高了試車臺動架的固有頻率，解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法，推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法，並計算了推力矢量測量精度。 -
The paper studies the pitch - regulated structure and stand - alone control system about mw wind turbine group. the background of the paper is " mw variable - speed constant - frequency wind turbine group ( no. 2001aa512022 ) ", which is supported by national 863 plan
本文以國家863計劃《兆瓦級變速恆頻風電機組》 （課題編號： 2001aa512022 ）為背景，主要研究了兆瓦級風電機組的變槳距機構及其單機控制系統。 -
This thesis measured the vibration signals of 1 # and 2 # running turbine - generator sets in a generating plant and their vibration signals that are indispensable to the study are gained. firstly, the low frequency faults of machine stand in generator side, rotor unbalance, misalignment, oil whirl, oil whip are diagnosed by fft analysis. secondly, applying wavelet theory to probing the instantaneous abnormal phenomena of the signals and to show their components
首先應用fft分析診斷出1 #和2 #汽輪發電機組存在的發電機側機座松動、轉子失衡、不對中、油膜渦動、油膜振蕩等故障，再運用小波分析探測信號中的瞬態反常現象並展示其成分，比較精確地診斷出了該發電廠運行中的1 #和2 #汽輪發電機組存在的碰摩故障。 -
To validate the performance of the system, a series of experiments are made on a 200mw unit simulator of max1000 dcs. the results of these experiments indicate : by following certain physical principles, for each real component of the control system, the mathematical model which is constructed to reveal its characteristics reflects exactly the work and message transfer process ; by considering the load demand to the unit and the electricity net ' s frequency difference, also combing with the real capacity that the unit can stand, the ccs and deh models, which are contrived by using simulation blocks, can exactly harmonize the control of the turbine and the boiler and can also control the load.
為驗證模型的性能，本文在基於max1000dcs系統的200mw機組模擬機上進行對建立的控制系統模型進行了一系列模擬試驗，試驗結果表明對控制系統的每一實際組件按照一定的物理規律所建立的反映其功能特性的數學模型，正確地反映了其工作過程及信息傳遞過程；利用模擬模塊開發的協調控制系統及功頻電液控制系統模型能夠根據對機組的各種負荷要求和電網的頻率偏差，結合機組所能承擔負荷的實際能力，正確地協調對汽輪機和鍋爐的控制，並對負荷加以控制。
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