chopper system 中文意思是什麼
chopper system
解釋
斬波系統-
At last, this paper also design a small capacity buck - boost type chopper system, pointing out the problems and difficultes of the ac modulation voltage system in the future
最後，對小容量斬波控制buck - boost電路調壓系統作了初步的設計，指出了本課題研究調壓系統有待解決的一些問題。 -
Thus, an open loop control scheme and a closed loop control scheme based on chopper system are introduced. lastly, a hardware and software design based on m icro - controller is presented
本文最後對基於斬波方式的三相交流異步電動機的軟起動方法給出了基於遠程監控的具體實現方案。 -
High frequency switching technique is becoming more popular in the power electronics area, the high frequency power transistors are applied in the buck - boost type chopper system. the characteristics of power mosfet and insulated gate bipolar transistors ( igbt ), some new kinds of power swithing devices, are deeply studied
高頻開關技術是當今電力電子技術發展的方向，本文研究的buck - boost斬波系統中採用了高頻功率器件，所以本文對新型開關器件? ?功率mos場效應管[ mosfet ]和絕緣門極晶體管[ igbt ]的特性進行了初步研究。 -
The system is based on chopper constant current drive technique, according to the top level design idea, adopting advanced specical subdivision control integrate circuit and powerful function 80c196kc to organize the system frame, desiging the minimum system of single - chip microcomputer, multifunction i / o interface circuit, relay switch circuit, keyboard and display circuit, multifunction digital setting interface circuit and so on, utilizing the hso and hsi interface circuit which are owned by this single - chip microcomputer exclusively and its powerful command system to realize dual - degree switch control, automation orientation, automatically searching zero position, locking machine when stopping, frequency to set digitally, automatically adjusting speed through changing frequency, swithing subdivision or squarewave control, on the basis of above, the system also have the function of running according to the setting steps and the frequency, voltage and current to display through the led, etc
系統基於斬波恆流驅動技術，按照頂層設計思想，採用先進的專用細分控制電路和功能強大的80c196kc單片機來組建系統構架，設計了單片機最小系統、多功能i o介面電路、繼電器切換電路、鍵盤顯示電路和多功能數字設定介面電路等，利用該單片機獨有的hso和hsi介面及其強大的指令系統，實現了雙余度混合式步進電動機的余度切換控制、自動定位、零位自動搜索、停機鎖定、數字化頻率設定、自動調頻變速控制、細分方波切換控制，在此基礎上，該系統還設有按預置步運行、 led頻率電壓相電流顯示等功能。 -
Abstract : thermochromic liquid crystal infrared imaging system includes a thermochromic liquid crystal infrared sensor, a chopper, controller, a light source, lens, liquid crystal phase plate, optical system, a charge coupled device ( ccd ) array, and microprocessor. the operation and performance of the thermochromic liquid crystal infrared imaging system are described
文摘:紅外攝像系統包括熱色液晶紅外傳感器、斬波器、控制器、光源、透鏡、液晶相位推移器、微處理器、光學系統、 ccd陣列等，描述了熱色液晶紅外攝像系統的工作原理和特性。 -
The biometric targeting system - it ' s in the chopper
那生物信號鎖定系統就在這直升機里 -
The biometric targeting system - - it ' s in the chopper
那生物信號鎖定系統? ?就在這直升機里 -
First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented
建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。 -
The simulation system includes the optics, chopper control, driving signal design, image data acquisition based on vi technology and image processing including image difference, non - uniformity correction ( nuc ), image intensification and dynamic display, etc. according to the corresponding theories, the author designed all these software modules. the research on the pyroelectric imaging technology through this experiment is of great importance to practical thermal imaging system in the future
根據熱釋電焦平面成像原理，用sspa器件在可見光條件下設計了基於虛擬儀器技術的熱釋電凝視焦平面成像模擬系統，包括光學系統、斬波控制、驅動信號設計、基於虛擬儀器技術的圖像數據採集和相關的圖像處理技術，如圖像差< wp = 5 >分、非均勻性校正、圖像增強和動態顯示等。 -
To reduce the high starting current as asynchronous motors start up directly and eliminate the negative influence that brought about by switching of contact when it starts up with reduced - voltage means, two new methods based on power electronics technology for improving the starting characteristics of three - phase induction motor are presented. one is alternative voltage regulator, the other is alternative voltage chopper. the three - phase regulating circuit - asynchronous motors system and the three phase chopper circuit - asynchronous motors system are analyzed and simulated with matlab
為解決上述問題，本文提出一種基於斬波方式的三相交流異步電動機的軟起動新方法，論文對電路的起動特性、功率因數、諧波以及控制策略進行了研究，模擬結果表明這種基於斬波方式的三相交流異步電動機的軟起動方法比基於三相交流調壓的三相交流異步電動機的軟起動方法具優越性。 -
Calculation of chopper voltage on ns pulsing system of neutron generator
脈沖中子發生器切割板電壓計算 -
The detecting techniques of harmful currents, the modulation methods of novel upfc and the balancing control of capacitors voltage on dc link are studied thoroughly. in order to be fit for three - phase four - wire system, the method of balancing control using chopper presented in literature [ 29 ] is mended
分析了零序和負序電流對新型upfc直流側電容電壓的不同影響，對文獻[ 29 ]提出的傳統upfc的直流側各電容電壓的均衡控制方法進行了仔細研究，提出了採用b型直流斬波器來控制新型upfc的直流側電容電壓的新方法。
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