換向電刷 的英文怎麼說
中文拼音 [huànxiàngdiànshuā]
換向電刷
英文
commutating brush-
This paper first begin with the connotation of virtual instrument technology, study and discuss the criterion and the working theory of usb deeply. on the principle of usb1. 1criterion, using usb interface chip usbn9604 and low consumption mirochip c8051f231, we designed the available interface of usb bus and its controlling software, turn the communicating function based usb bus between computer and testing device. second based on the developed interface of usb bus, using microchip pic16c62 and a mount of relays, we designed the multiswitching scanner and its controlling software to complete the funtion of accesses swithing in testing system. third calling the api function inside the windows using vb programming language, communicat with the impelling program of selected hid, achieve the function of testing instrument with usb interface, complete the development of upside software faced testing. at last, based on the deep studying of pcb testing method, used the developed multiswithing scanner and software faced testing, combinated with necessary testing instrument, we constructed the pcb testing system and analized the testing result simply
論文首先從虛擬儀器的技術內涵出發,深入研究和討論了通用串列總線usb規范及工作原理,並依據usb1 . 1規范,採用usb介面晶元usbn9604和低功耗微處理器c8051f231設計開發了通用的usb總線介面及其控制固件,實現了通用計算機與測試設備之間基於usb總線的通信功能;其次,在所開發的usb總線介面的基礎上,使用微處理器pic16c62和多路繼電器開關,設計開發出實現測試系統中測試通道切換功能的多路通道掃描器及其控制固件;再次,採用vb語言編程,調用windows內部api函數,與選定hid類驅動程序進行通信,實現usb總線介面測試儀器功能,完成面向測試的上層軟體開發;最後,在深入研究印刷電路板測試方法的基礎上,利用已開發的多路通道掃描器和面向測試軟體,結合必要測試儀器組建印刷電路板測試系統,並對測試結果進行了簡要的誤差分析。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。A commutator - brush combination is used as a mechanical rectifier to make the armature terminal voltage unidirectional and also to make the mmf wave due to the armature current fixed in space
通過使用換流器電刷的組合作為一個機械整流器以使得電樞的端電壓為單方向的同時也使得由電樞電流所產生的磁動勢在空間是固定的。This paper uses " virtual neutral point method " to measure the " zero crossing ", then the soft deal " zero crossing " to get the six key position to commutate
本文採用虛擬中點的方法來識別反電勢過零點,然後對過零點進行處理得到無刷電機換向的六個關鍵位置。Mechanical commutation ( graphite or precious metal brushes ), highest efficiency, low inductance, low electromagnetic interference, multiple combination possibilities with gears, feedback devices and control electronics
機械換向器(石墨和金屬電刷) ,高效率,小電感,電磁干擾小,能與多種齒輪箱,反饋設備和控制電子元件配合使用。Conventional dc motor ’ s mechanical commutator and brush result in limited capability, low reliability, big noise. people manage to develop more quiet, high efficiency and reliability, big capability driving motor
傳統的直流電機由於其本身固有的特性,即有機械換向器和電刷從而導致電機容量有限和可靠性不高、噪音大,迫使人們探索低噪音、高效率並且大容量的驅動電機。We then attacked the basement, building a storage closet at one end, and installing a large kitchen at the other, complete with new plumbing, electrical wiring, drywall, paint job, counters and sinks
接下來,我們開始向地下室進軍。地下室的一邊我們建了一間儲藏室,另一邊設置了一個大廚房,並重新換了水電管路水槽桌臺,粉刷了墻壁。The permanent magnet brushless dc motor is a dc motor using electronic commutation in place of mechanical commutation in fact, so it has excellent characteristics of dc motors, for example good start and timing performance. it simplifies the motor ' s structure and overcomes the friction disadvantages of ordinary dc motor because it does n ' t use mechanical commutation. it is extensively used in aviations, robots, digital machine tool and so on
永磁無刷直流電動機實際上是以電子換向代替機械換向的直流電動機,因而保持了直流電動機的優良特性,具有較好的起動和調速性能,又因它無需機械換向器使電機的結構簡單,可以從根本上克服一般有刷直流電動機易於產生換向火花的弊病,在航天、機器人、數控機床等許多工業領域已得到廣泛應用。The permanent magnet brushless dc motor is a dc motor using electronic communication in place of mechanical communication in fact, so it has excellent characteristic of dc motors, for example good start and timing performance. it simplifies the motor ' s structure and overcomes the friction disadvantages of ordinary dc motor because it does n ' t use mechanical communication. it is extensively used in aviations, robots, digital machine tool and so on
永磁無刷直流電動機實際上是以電子換向代替機械換向的直流電動機,因而保持了直流電動機的優良特性,具有較好的起動和調速性能,又因它無需機械換向器使電機的結構簡單,可以從根本上克服一般有刷直流電動機易於產生換向火花的弊病,在航天、機器人、數控機床等許多工業領域已得到廣泛應用。However, the traditional dc motor uses brush so as to switch the phases, so there are relative mechanical frictions. then it comes out many fatal failing, such as yawp, spark, wireless disturb, etc. what " s more, its making cost is high, its maintain is also difficult, therefore its application is greatly limited
直流電動機具有運行效率高和調速性能好等諸多優點,但傳統的直流電動機均採用電刷,以機械方法換向,因而存在相對的機械摩擦,由此帶來了噪聲、火花、無線電干擾以及壽命短等致命弱點,再加上製造成本高及維修困難等缺點,從而大大地限制了它的應用范圍。The emphasis of this paper is the commutation control of sensorless bldc motor, which is used to drive photovoltaic pumps
本文所研究的重點是無位置傳感器直流無刷電機的換向控制,電機驅動的對象為光伏水泵系統。Conventional dc electric propulsion system always takes up dominant station in submarine propulsion. due to dc motor inherent limitation that machine commutation and brush results in stand - alone capability ' s limit low reliability, big noises, people manage to explore more quiet, high efficient and reliability, big stand - alone capability propulsion motor
傳統的直流電力推進系統一直在潛艇推進中占據主導地位,但由於直流電機本身固有的缺陷即有機械換向器和電刷從而導致單機容量有限和可靠性不高、噪音大,迫使人們探索更加安靜並且高效可靠、單機容量大的推進電機。It elaborates on the 3 - step start technique. i adopt the method which permits the bldc motor to automatically search the best time to change its operation stage from a separately controlled synchronous one to a self controlled one using the back emf as the commutation signal. this method prevents the stepping out and stopping problems in the changing procedure of the motor
闡述了電機的三段式起動方法,在直流無刷電機由起動階段外同步運行切換到反電勢換向自同步運行的過程中採用了自尋最優點切換的方法,保證了電機在切換過程中不會發生失步和停轉現象。Sparking on commutator ' s carbon brushes is a common phenomenon in operation of the turbo - generator set, the causes resulting in sparking have been analysed, the experiences in aspects of operation, maintenance, and repair being summarized, and corresponding preventive measures beng put forward
摘要勵磁機換向器碳刷冒火花是汽輪發電機組運行中常見的現象,分析了產生火花的原因,總結了勵磁機換向器運行、維護、檢修以及故障處理等方面的經驗,提出相應的預防措施。Influence on commutation torque ripples of brushless dc motor based on single chop modes
單斬調制方式對無刷直流電動機換向轉矩脈動的影響Analysis and attenuation on commutation torque ripples of brushless dc motor
無刷直流電機換向轉矩脈動分析與抑制The sensing for rotor flux position of bldc motor is the key of commutation, so this paper expatiates on three different methods to sense rotor flux position and compares their advantage and disadvantage
因為無位置傳感器直流無刷電機的轉子位置檢測是其準確換向的關鍵所在,所以本文對幾種不同的轉子位置檢測方法進行了闡述,並比較了其優缺點,希望能有一點借鑒的意義。First in this paper, the control methods of electric actuators was studied and analyzed. the retangcle - wave permanent magnet brush - less motor is used for servo - motor, the reason of its torque ripple and the way to eliminating or suppession is analyzed and elaborated. in order to achieved wide - speed range, the method of variable structure control ( vss ) was used.,
論文分析了飛機電力作動系統的基本要求,選用方波直流無刷電機作為執行電機,採用重疊換向法、變結構控制策略和轉速、電流雙閉環pid控制方案,很好地解決了其固有的低速轉矩脈動現象,達到調速范圍寬、轉矩脈動小的設計要求。As the driver of the micro multi - rotor craft, the micro bldc motor was of simple structure, easy fabrication, non commutation spark and so on
摘要作為多旋翼微直升機的驅動器,微型無刷直流電動機具有結構簡單、製造方便、無換向火花等特點。分享友人