pulsation phase 中文意思是什麼
pulsation phase
解釋
脈動階段-
The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。 -
Experiments and numerical analysis of pressure pulsation for oil and water two phase flow in porous media
油水兩相滲流壓力脈動的實驗及數值分析 -
Based on analysis and research, many experiments were done. they include : ( 1 ) self - pumped phase conjugation ( sppc ) in ce : batio3 with 532nm nanosecond pulse operated at either a 1 - or 10 - hz repetition rate. ( 2 ) sppc operated in ce : batio3 with 532nm continuous wave, especially concentrated on the self - pulsation phenomenon
在此基礎上對不同波長入射、連續及脈沖情況時晶體自泵浦位相共軛特性進行了深入的實驗研究，它們包括： （ 1 ） 532nm脈沖重復率f = 1hz 、 10hz時ce ： batio _ 3位相共軛特性實驗。 -
The turbulent characteristics of high - velocity sediment - laden and aerated flow are more other than the clear water flow of single - phase and current of low speed. in a special circulating system with high velocity flow, some flow parameters such as boundary shear stress and pulsation pressure are measured. an investigation is made on the turbulent characteristics of the three - phase flow of water, air and sand
本文針對高速含沙摻氣水流的運動規律有別于低速水流及清水單相流，在自己研製的高速渾水循環系統中，通過對高速含沙摻氣水流壁面剪切應力和脈動壓強等參數的量測，分析了水沙氣三相流的紊動特性，探索了泥沙對固壁的磨蝕機理及減蝕措施，其主要內容包括以下幾個方面： 1 -
A maximum reflecting of 53. 8 % was obtained. furthermore we advanced, for the first time to our knowledge, which the self - pulsation of phase conjugation wave was related to the incident power intensity. through calculation we concluded that the phase conjugation was instable when the incident power density ranged in 700 - 1240mw / cm2
實驗中特別著重分析了位相共軛光不穩定，即自脈動現象，首次得出位相共軛光自脈動與入射在晶體上功率密度有關的結論，即在700 1240mw cm 』的入射功率密度下，有位相共軛光不穩定，即自脈動現象產生。 -
The clock and data pulsation signals from upper sensor heads can be received using pin diode, then, amplified and inverted in logical control unit for the purpose of cpu operation. hereinafter, the digital signal will be delivered into the central processing unit ( cpu ) for related calculation, and meanwhile transmitted to a d / a converter for signal recovery after filter and phase - shift circuit
通過採用pin管接收從傳感頭傳遞下來的時鐘脈沖和數據脈沖信號，並將它們放大整形傳送到邏輯控制單元，產生邏輯控制信號，再將數字信號傳送給d / a轉換器，設計了濾波器和移相器電路，還原出了原始的被采樣信號。
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