open circuit control 中文意思是什麼
open circuit control
解釋
開路控制-
According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also
根據系統技術要求，採用單片機實現了混合式直流直線步進電動機的開環數字控制；利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定；利用細分控制技術保證了電機運行的平穩性，並進行了波形分析和理論研究；採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題；同時對主功率電路、驅動電路和系統保護電路進行了分析，完成了硬體設計、製作和軟體編程、調試，最後在混合式旋轉步進電動機上進行了全面測試。 -
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。 -
Superior frequency characteristics shortest recovery time, realize the switching of the circuit, complete functions such as open and close, clip wave, wave detector, high - frequency rectifier, logic control, which fit for all kinds of digital circuits and analog circuits
具有良好的高頻開關特性反向恢復時間短，可實現對電路開和關的控制功能，可完成開關限幅檢波高頻整流邏輯控制等功能，適用於各類數位電路類比電路。 -
Based on the study of transferring characteristics of the lcc - type resonant voltage, the parameter combinations, which make widths and magnitudes of voltage pulses of resonant network adjustable, arededucedo when the following requirements are met : fn > 3, k > 3 or cp / cs > 8, the above circuit is of natural voltage - stabilized characteristics, thus open - loop control method for bucking voltage is presented and the experimental results verify that the method is feasible.,
實測整機在額定負載時效率達到88以上。在研究lcc諧振網路電壓傳輸特性的基礎上，推導出滿足可變寬度和幅度的諧振網路輸出電壓脈沖列的參數組合。設計f n 3 、 k 3或c _ p / c _ s 8時，諧振網路具有自然穩壓特性，因此本文提出並實驗驗證了一種整機為降電壓時的開環控制策略。 -
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。 -
The device has realized the real - time control and protection for short circuit, failure to start, unbalance ( open phase ), under - voltage, earth faults, and overload
保護與控制裝置實現了對短路、起動故障、不平衡（斷相） 、欠壓、接地故障、過負荷的實時監控和保護。 -
A novel measurement and control system ( mcs ) used in hv flameproof switchgear has been established based on the 80c196kb single - chip microprocessor, by which electrical faults such as short circuit, over - load, over - voltage, open circuit, earth leakage and so on can be automatically distinguished and processed, and with the exception of this, the insulation degree of the double screen cables is monitored on - line. the operating condition and fault parameters can be displayed in turn with liquid crystal display
該系統能自動判斷短路、過載、過壓、欠壓、漏電等故障，並對高壓電纜的絕緣水平進行實時監測，大屏幕液晶顯示器實現了電太原理工大學碩士學位論文網參數的輪流顯示，通過撥碼盤輸入系統各項整定參數，真正實現了保護系統數字化。 -
According to the rule of mine safety regulations, an intrinsically safe pilot circuit with perfect performance for underground motor intelligent protective systems is put forward, which can effectively avoid the phenomenon of self - starting that is caused by the earthing of control lines before starting motors, at the same time, can reliably cut off the switches to ensure the safety of underground production under operation condition no matter what the faults of short circuit, open circuit and earthing in the control circuits happened
根據煤礦安全規程規定設計了性能完善的本質安全型先導電路，起動前它能有效地防止因控制線接地造成自起動現象的發生，而且在運行中無論控制線發生短路、斷線還是接地故障，它均能可靠跳閘，確保生產的安全，該先導電路的性能指標達到了國內領先水平。 -
Self - developing control circuit solve open and close control questions in permanent magnetic actuator with one coil
自行設計的控制電路解決了單線圈永磁機構的分、合閘拉制問題。 -
Abstract : the system composed of intelligent control modules for three - phase induction motors is introduced in this paper. this module can conduct starting, reverse braking, and reverse conrtol with current limiting resistance. besides, it can also detect low voltage, overload, and open circuit of 1 or 2 phases, and do protection according to the detection. it especially fits to the controlling of motors which often do starting, braking and reversing
文摘:介紹了一種智能三相電機控制模塊組成的系統，能在串電阻（電抗）起動、反接制動和換向控制的基礎上進行欠壓檢測、過載檢測、斷相檢測及電機故障保護.尤其適用於起動、制動和換向控制頻繁的電機控制場合 -
This paper study a two - phase inverter - fed induction - motor drive, which can be widely used for low - power, variable speed drive system. the study has completer 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 singlechip controller, power drive device, inverter - fed device, a low power tow phase induction motor and safeguard circuit
本文研究了一種新型電壓空間矢量控制兩相逆變器?異步電動機的變頻調速系統，該系統可以廣泛應用於小功率、寬調速運行的場合。本項研究完成兩相逆變器的設計，並組成了試驗用的兩相逆變器?異步電動機系統。系統是一個轉速開環的變頻調速系統，由單片機機控制電路、功率驅動電路、逆變器主電路、保護電路組成。 -
Abstract : a new sequencing valve o f with structure of open in usual and compound has been introduced with principl es, characteristics and application in control circuit of increasing speed cylind ers of hydraulic press
文摘:介紹了一種新型順序閥? ?常開式和復合式順序閥的結構、原理、特點及其在液壓機增速缸增速控制迴路中的應用。 -
It is shown that closed loop circuit feedback control and open loop control are separated during the zero - power start up process. the self - starting of the medium frequency converter is achieved
論文分析了通過plc對感應加熱進行閉環控制的控制策略，並採用了閉環開環分離的方法，解決零電壓啟動問題。 -
Comparing with other mostly similar motion controller, this paper points out that the key technology of motion controller is to development the motion control ic ( integrated circuit ). as mostly open motion controller is based on dsp ic, this paper advances a way to develop motion control ic by the technology of ip ( intellectual property ) core and programmable logic device
與目前出現的大多數運動控制器相比，本文指出限制國內運動控制產業發展的瓶頸在於運動控制晶元的掌握和開發，與目前採用工業控制專用dsp晶元來開發運動控制器不同，我們提出使用ip核+可編程晶元（ pld ）來開發運動控制器。 -
Button with 2 usually - open contacts and auto - resetting. suitable for high - voltage engine control circuit or function pancel a
功能為2帶常開觸的按鈕，自動復位，適合於高壓電機控制電路。或採用a功能面板。 -
This dissertation delivers ecu hardware design scheme and discusses its feasibility ; designs ecu hardware circuit based on mcu, including ecu input and output signal processing channel, and the emigration of c / os embedded real time operating system on mcu lpc2292 ; designs fuel injection control project software procedure, and simulate it. it implements the open loop control of air fuel ratio under part of the motor working condition
在充分進行可行性論證的基礎上，完善了ecu的硬體設計總體方案;設計了基於單片機的ecu硬體單元電路，包括ecu的輸入、輸出信號處理通道以及c / os嵌入式實時操作系統在lpc2292單片機上的移植;設計了燃油噴射控制項目的軟體流程;最後通過模擬模擬，實現了發動機部分工況下的空燃比的開環控制目標。
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