working alternating current 中文意思是什麼
working alternating current
解釋
交流工作電流-
This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。 -
Analysis of equivalent circuit of controlled source and working state of three - phase alternating current motor
三相交流電機的受控源等效電路及其分析 -
This paper expounds some difficult points in learning the alternating current of electrical engineering such as the effective value of ac, the functions of electrical inductance and capacitance on ac, the working principle of induction - motor and the transmit electricity
對電工學中有關交變電路學習的一些難點，如交流電的有效值，電感、電容對交變電流的作用，感應電動機的工作原理及輸電等進行了闡述。 -
Abstract : this paper introduces the working pinciples of the electro - economizer, in which either alternating or direct current voltage can be input with the adaption to the operating coils of contactor, steady direct current is output, and voltage auto - converting is absorbed and kept withno contacting point
文摘:論述了與交流接觸器操作線圈適配的交直流輸入（操作）電壓通用，恆直流輸出，吸合與保持電壓無觸點自動轉換節電器的工作原理。
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