轉動刷子 的英文怎麼說
中文拼音 [zhuǎndòngshuāzi]
轉動刷子
英文
revolving brush-
Depend on the comprehensive analysis and study of the structure, principle, and exterior characteristic of the motor, through the methods of system modeling and digital simulation analysis, two kind of control device that work for the low voltage ( lvdc ) and the high voltage ( hvdc ) in avigation are researched respectively. point to the control technique of close - loop speed stabilization at a limited adjustment speed range, we bring out the close - loop speed control method that using the rotor position sensor indirectly measure the speed of the motor
在全面分析了稀土永磁無刷直流電動機的結構特點、工作原理、運行方式以及外部特性的基礎上，通過系統建模和數字模擬分析，分別針對航空低壓直流（ lvdc ）和高壓直流（ hvdc ）兩種電動機構用永磁無刷電動機，在小范圍轉速連續調節下的閉環穩速控制技術進行了詳細理論研究，提出了利用轉子位置傳感器信號間接測量電機轉速進行電機轉速閉環穩速控制的策略。A separated collecting ring with carbon brushes was designed and manufactured for the dynamic stress test of spoke plates of rotor of bulb tubular turbine generator
摘要根據測試需要，設計自製了分體式碳刷集流環，對燈泡貫流式水輪發電機轉子輻板進行了動應力測試。For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。A special roller in the roll stand of a web press that uses air - actuated grippers to hold the core of the roll of paper
中義在輪轉印刷的輥筒組中的一種特殊輥，使用氣動式夾子固定住紙?的軸心。Design engineers now selecting pmbldc motors over conventional dc or induction motor drives for the following reasons : 1 ) the absence of brushes results in an essentially maintenance free operation and eliminates the undesirable effects of commutation such as sparks, brush - loss, radio - frequency interference, etc. 2 ) the low inertia of the rotor enhances the quality of the mechanical response of the motor, shortening the acceleration and deceleration time. 3 ) utilizing rare - earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size. 4 ) because of the absence of commutation segments, the stator construction is simple
現在的工程師們更為青睞永磁無刷直流電動機是因為以下幾點原因： （ 1 ）去除了電刷的永磁無刷直流電動機徹底地免除了維護而且消除了我們不希望的由於換向帶來的火花、電刷損耗以及無線電干擾等等； （ 2 ）低轉動慣量的轉子提高了電機機械響應的質量，從而縮短了電機加速和減速的時間； （ 3 ）高矯頑力稀土永磁材料的使用使得同樣尺寸的永磁無刷直流電動機比傳統的直流電動機效率高； （ 4 ）由於沒有機械換向部分定子的結構簡單了。The speed - independent position function of the rotor was given by analyzing the phase current and phase voltage of the permenent magnet brushless dc motor, using the powerful operation function of dsp
利用dsp的強大運算功能，通過分析永磁無刷直流電動機的相電壓與相電流給出轉子速度無關位置函數。Because the controller is easy to get the position of rotor by the encoder, we can continuously rotate the flux of the armature rotor by applying spwm method to the control system. the continuous rotation of the flux of armature make the output torque of motor has no ripple
由於通過編碼盤可以輕易獲得精確的電機轉子位置信號，故運用spwm調制方法可以使得無刷機的電樞磁場按照圓形軌道連續旋轉，從而實現輸出轉距無脈動。In this chapter, the method of bldcm rotor position detection is first discussed. then the principle and algorithm of bemf zero crossing point detection is explained. in succession, the chapter dissertates the software realization of the bemf zero crossing point detection algorithm, the software disturbance filter and the modification of phase displacement, and the software realization of commutation point
在這一章中，先簡述了無刷直流電機的轉子位置器檢測方法；然後論述了反電動勢過零檢測原理和演算法以及該演算法的軟體實現、軟體濾波和相移修正、換相點的軟體實現；最後對軟體開環換相起動策略作了詳細論述。The brushless dc starting magneto is an itegeration of the brushless dc motor and the motorcycle magneto. in this paper the design feathers of the stator, rotor and power circuit of the start magneto are discussed and the design methodologies are presented
針對將直流無刷電機與摩托車磁電機集合在一起的直流無刷起動磁電機，分析了電機定、轉子及驅動電路的設計特點，提出了設計方法。With import and export rights, the international exhibition, investment and financing, and other qualifications, mainly in the following areas : petroleum, chemical engineering ; paints, rubber and plastics. surface treatment ; energy, metallurgy, iron and steel ; wood ; medical, maintenance, pharmaceutical, medical ; textile and leather ; electronic components instrumentation ; communications, radio and television equipment, media programs ; hvac refrigeration, building materials, engineering and construction ; security, protection, fire ; hardware, tools ; iec electrical, lighting ; lamps and accessories, supplies and maintenance ; environmental protection, water treatment ; machinery and equipment industry ; paper, printing and packaging ; logistics ; secondary transfers ; gifts, toys, jewelry ; food, beverage, forestry, animal husbandry and fisheries ; household goods, hotels, beauty care ; it equipment, digital products, software ; office of books, educational equipment ; sports, leisure, sports goods ; wearing apparel, shoes, and hats, bags ; household appliances, audio - visual equipment, professional lighting ; international exhibitions ; transnational agent ; business services, advertising and other areas of international trade, international investment and financing
具有進出口權、國際會展權、投融資等資質，目前主要從事的領域有：石油、化工；塗料、橡塑、表面處理；能源、冶金、鋼鐵；木材；醫藥、保養、制藥、醫療；紡織、皮革；電子元器件儀器儀表；通信、廣電設備、傳媒節目；暖通製冷、建材、工程建築；安防、防護、消防；五金、工具；電工電氣、照明；汽摩及配件、用品、維修；環保、水處理；機械及行業設備；紙業、印刷、包裝；物流；二手轉讓；禮品、玩具、珠寶首飾；食品、飲料、農林牧副漁；家居用品、酒店、美容護理； it設備、數碼產品、軟體；辦公圖書、教育裝備；運動、休閑、體育用品；服裝服飾、鞋帽箱包；家電、影音設備、專業燈光；國際性展覽會；跨國代理；商務服務、廣告等領域的國際貿易、國際投融資。Adopting rotor field - oriented vector control methods, through which make the stator and the rotor magnetmotive forces can be kept orthogonal all along during operation of the bldcm, combining hysteresis current modulation ' s current control advantage and space voltage vector modulation ' s torque ripple attenuation advantage, then designing a sort of bldcm hysteresis current svpwm control method
摘要研究採用轉子磁場定向的矢量控制方法使無刷直流電動機定、轉子磁勢矢量始終保持正交，結合滯環調制電流控制和空間電壓矢量調制，設計了無刷直流電動機滯環電流svpwm控制方案。The ideal bemf waveform of bldcm is trapezoid with 120 ! platform width. in the 120 conduction mode, the stator current is not ideal due to the stator inductance, and the torque ripple occurs
理想的永磁無刷直流電動機的反電動勢的波形是120平頂的梯形波，在三相六狀態120導通方式控制下，電流由於電機定子電感的存在而不是理想方波，因此產生了換相轉矩脈動。Abstract : first, the key magnet statuses and their pertinent mmf. position of exterior rotor brushless dc motor are described in this paper. second, the air - gap magnetic field and the armature reaction of the three - phase six - step exterior rotor brushless dc motor used in electrical bicycle are analyzed by means of mmf. vector, mmf. integration and magnetic field fem respectively. some valuable conclu - sions for designing this kind of motor are obtained
文摘:給出了外轉子無刷直流電動機的典型磁狀態及其對應的磁勢矢量位置，並用磁勢矢量合成法、磁勢積分法及電磁場的有限元方法對電動自行車用三相六狀態外轉子無刷直流電動機的氣隙磁場及電樞反應進行了詳盡的分析，從而得到有益於該種電機設計的結論。He held a brush in his hand, and, with all his airy superiority gone, he brushed potter's new clothes as the latter slowly turned this way and that way.
他手裡拿著一把刷子，原先那傲慢的神氣全不見了；他替波特刷身上的新衣，波特則緩緩地、時左時右地轉動著身子。Basically, a brushless dc motor consists of a permanent magnet ( pm ) synchronous motor, an inverter and a position sensor mounted on the motor shaft
通常的永磁無刷直流電動機由永磁同步電動機、逆變器以及安裝在轉子軸上的位置傳感器構成。Secondly, the theory of reference frame transformations is applied to transform the dynamic mathematical model to a d - q - 0 rotating reference frame system, and the dynamic performance of the bdfm is simulated by the computer
其次，應用坐標變換原理將籠型轉子無刷雙饋電機的動態數學模型轉換成d ? q ? 0坐標下的數學模型，並對這種電機進行了動態特性模擬研究。A novel method of rotor position detect for sensorless brushless dc motor was introduced, that was the method of speed - independent position function
摘要介紹了一種新的無位置傳感器無刷直流電動機的轉子位置檢測方法速度無關位置函數法。分享友人