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- back EMF coefficient 反電動(dòng)勢系數
- The back EMF constant and torque constant are analyzed. The calculating formulas are gived. 分析了電機的反電勢常數和力矩常數,并給出了計算公式;
- The constitute of harmonic back EMF is analysed, the position detection circuit and the microcomputer control system of step motor is designed. 分析了諧波反電勢信號的構成，設計了相應的位置信號檢測電路及步進(jìn)電動(dòng)機的微機控制系統。
- In hybrid stepper motor, the back EMF of stator winding is function of rotor position, continuous rotor position is obtained from thefunction. 就混合式步進(jìn)電機而言，定子繞組的反電勢是轉子位置的函數，從而可以解算出連續的轉子位置信息。
- The technique of back EMF induction in BLDC motor is analyzed, the "virtual neutral point" method and the technique of "3-step" start are introduced. 主要分析了反電動(dòng)勢感應方法，并闡述了虛擬中點(diǎn)法和三段式起動(dòng)技術(shù)。
- Detecting back EMF is one of the most important methods for the detection of rotor position in square wave current drive BLDCM sensorless control. 方波電流驅動(dòng)的BLDC電機無(wú)位置傳感器控制檢測轉子位置的最重要方法是反電動(dòng)勢檢測法。
- On this base, the closed-loop control method of hybrid step motor using the harmonic back EMF is investigated, and the microcomputer control system of step motor is designed. 在此基礎上研究了利用諧波反電勢信號實(shí)現混合式步進(jìn)電動(dòng)機閉環(huán)控制的方法，設計了步進(jìn)電動(dòng)機的微機控制系統。
- The application of the technology of back EMF induction in BLDC are analyzed by introducing the IC ML4428.The calculation formulas of some important parameters are shown behind. 通過(guò)對ML4428的介紹，分析了反電勢感應技術(shù)在無(wú)刷直流電機中的應用，并給出了其中一些重要參數的計算方法
- The zero crossing signal of the true phase back EMF can be directly obtained from the motor terminal voltage by properly choosing the PWM and switch control strategy. 該方法不需要引出電機中性點(diǎn),通過(guò)選擇PWM和導通控制策略,就能直接從電機端電壓獲得反電勢過(guò)零點(diǎn)信號。
- It is discussed that the performance of servomotor is influenced by winding connect ion, back EMF, resistance, inductance and electrial time constant etc. 討論了繞組連接方式、反電勢以及電阻、電感和電氣時(shí)間常數等參數對電機性能的影響;
- The magnetic network model of hybrid step motor is established according to the air gap rate permeance method, and the expression ofthe harmonic back EMF is deduced. 利用氣隙比磁導法建立了混合式步進(jìn)電動(dòng)機的磁網(wǎng)絡(luò )模型，推導出諧波反電勢的表達式。
- This new SMO can decrease the high frequency ripple of the back EMF (Induced Electromotive Force), has the advantage of no phase delay, and can simplify the structure of the SMO. 該滑模觀(guān)測器能夠減小估算反電勢中的紋波，且不產(chǎn)生信號相位差，并較傳統的滑模觀(guān)測器結構簡(jiǎn)單。
- The modeling method for the current regulated Brushless DC(BLDC) motor is presented,which is based on the strategy of the piecewise linear curves used to generate the back EMF. 該方法在不影響穩定性的同時(shí),使得控制系統的抗擾能力得到改善。
- When the motor is operated in low speed range, the stator current is discontinuous, and then the back emf can be detected directly while the stator current is zero. 當電動(dòng)機操作在低轉速范圍時(shí)，定子電流為不連續，可在電流為零處，直接偵測反電勢。
- This paper presents the basic principle of sensorless brushless DC motor commutated by using the zero-crossing method of back EMF, and designs the detection circuit. 摘要分析了反電勢過(guò)零檢測法控制無(wú)位置傳感器無(wú)刷直流電機的基本原理，設計了檢測電路；
- The evolution of high power density electric vehicle drive motors stimulates the study on the techniques to optimize and evaluate power potential of machines with vastly different topologies,having a variety of different waveforms of back emf and current. 高功率密度電動(dòng)車(chē)輛驅動(dòng)電機的發(fā)展促進(jìn)了評估與優(yōu)化帶有不同電流與反電勢波形的各種結構類(lèi)型電機的功率水平的方法的研究。
- This well-performed energy-saving controller for induction motor savesenergy when the motor is running without load or with light load. This control-ler adopts back emf control for A. 電動(dòng)機高性能節能控制器適用于電機空載或輕載時(shí)的節能,該節能控制器由于采用了國際首創(chuàng )的交流電機反電勢控制從而大大提高了節能控制器的節電率和突加負載響應性能。
- In this paper, the influence of rotor-skewing on the machine performance, such as the unbalanced radial force, cogging torque and back EMF, is analyzed, with two different prototypes being comparatively studied. 分析了轉子斜極對其不對稱(chēng)徑向力、齒槽定位轉矩和反電勢等性能的影響，并用兩種不同結構的電機進(jìn)行對比研究。
- Although the back EMF increases gradually with prolonging the electrolysis process, it decreases signifcantly with the addition of SrCO_3. Therefore, it is sure that SrCO_3 is decomposed in the electrolysis. 在電解過(guò)程中; 反電動(dòng)勢逐漸增加; 但向熔體中加入 SrCO_3后; 反電動(dòng)勢明顯降低.
- Rose bushes shoot again after being cut back. 玫瑰叢修剪後還能再長(cháng)出新枝。
