【正文】 還有 D. Baker和Stebon貝克博士為我寫這篇文章所做出的努力。注意,無位置傳感器技術不能確定,因為每個角絕對軸的電氣周期,構成了完整的革命是相同的。傳統(tǒng)的方法,包括磁性分解器軸測角和光學編碼器。如果負荷超過一定時間,這一點(依靠電機和電機負載特性),將會停滯不前,就不能等到同步旋轉是重建。在正弦案例,然而,旋轉光滑,所以只有一個位置無關旋轉之間的偏差進行定子和轉子磁矢量。這樣一種激勵模式需要一個相對復雜的控制電路,但這種情況可以判斷這個更高性能得到較大的驅動器。動態(tài)性能可通過增加機電阻尼的驅動,但因為這涉及到的,這勢必三相電阻高于驅動的損失。當轉子接近平衡位置時,其慣性,減慢配合合規(guī)磁場形成一個機械振抱合力系統(tǒng)。 進一步發(fā)展所生產的轉動是漸進的步驟在商業(yè)上可用步進驅動。這是通過使用外接電源開關重復。在一個小的步進電機、相對高電阻的初級繞組電流電壓范圍的自然。這個電路的圖12常被用來驅動這種電機。主要缺點的bifilarwound單極勵磁方案是,在每一階段,只有一半的總繞組可以用來運送電流在任何一個時間。齊納二極管的負電壓,可以在這個階段出現(xiàn)在關掉,線圈電流迅速降低到零。這個電路的圖10有著重大的缺點在于它依賴的電阻相繞組耗散能量,從而允許電流在一個繞組降至零當它切斷。一個方法是提供雙向流量相卷:單一傷口技術經(jīng)常用于小型步進馬達驅動簡單是哪里。離散定位特色的混合式步進電機使它適合應用在數(shù)碼控制的應用。上級勵磁方案利用位置的第兩階段總是很興奮。圖9顯示八種不同的基本矢通量角厘米的各種組合產生的實相。換句話說,50電氣周期進行每個完整的旋轉電機軸上。這個轉子磁鏈,是電子速度,這一次。整體的旋轉時相繞組感生表示由于轉子磁鏈永磁材料。這可以觀察到當轉子旋轉混合式步進電機是由另一機器,相電壓信號與示波器觀察?？梢钥闯?目的是為了提供了永磁磁的流量,相互作用的相繞組產生轉矩。如果是這樣,連線端桿2至6成為南極與磁極8成為北美、轉子會順時針方向旋轉(從前面)的相反兩極轉子與定子吸引和同性兩極相互排斥。通電時往往會使這個位置的轉子造成轉子旋轉,它需要被搬上一步。定子極點的5和7都屬于階段一,可以看出,波蘭人1 ~ 5有牙齒整齊的轉子在前面,波蘭人3和7個已經(jīng)走向與轉子在后面。一個磁性得到了有限元分析的磁通鏈接前后兩端轉子。轉子齒和被選為不完整多四和定期角位移的定子兩極的安排,是建立這樣一個階段的兩極可以設定自己的牙齒結盟的一端,另一對轉子的兩極相同的階段是在排列在另一端的轉子。轉子具有大量的牙齒(通常是50)和耐永磁產生靜電通量沿主軸的機器。二相混合式步進電動機:建設、運營和分析二相混合式步進電動機的設計為例,說明在橫截面圖2,主要是一個定子和轉子,通常是由堆放的電工級鋼片?；旌鲜讲竭M電動機通常有兩、三、五電器繞組。這個混合式步進電機是一種同步激動交流電流所提供的電源。應用步進馬達找到許多工業(yè)領域如包裝機械、輸送系統(tǒng),機器人手臂的動作、電梯、堆棧的機床。作為一個結果,是理想的應用在一塊設備必須移走,定位準確,通常根據(jù)指令從數(shù)字控制器。作者：J. D. Wale and C. Pollock步進電機驅動的應用混合式步進電動機的名字來自他們的建筑是一種混合之間永磁和磁阻電機拓撲結構。闡述了建設和運營混合式步進電機。附錄AHybrid Stepping Motors and DrivesHybrid stepping motors derive their name from the fact that their construction is a hybrid between permanent magnet and reluctance motor topologies. Their inherent positional accuracy makes them suitable for a wide range of motion control and industrial positioning applications. This article explains the construction and operation of the hybrid stepping motor. Power converter topologies are presented which are monly used in hybrid stepping motor drives. Methods are discussed of enhancing performance beyond that achievable by traditional methods. It is shown that the fall in cost of power electronic devices is enabling further enhancements of stepping motor drive technology, broadening the range of applications for this class of motor.by J. D. Wale and C. PollockHybrid stepping motor drive applicationsHybrid stepping motors derive their name from the fact that their construction is a hybrid between permanent magnet and reluctance motor topologies. Hybrid stepping motors range from miniature motors having outputs measured in uNm and uW to motor producing up to 60Nm of torque and 2kW of shaft power. Stepping motors have traditionally been used in applications at speeds up to2000/3000 r/min, but recent enhancements in drive technology and improvements in motor design are enabling the operating speed of stepping motors to be increased. Hybrid stepping motors are inherently suited to providing motion in discrete, small steps. As a result, they are ideal in applications where a piece of equipment must be moved and positioned accurately, usually according to instructions from a digital controller. Stepping motors are suited to driving lowspeed highfriction loads and are ideal for pointtopoint positioning systems and applications needing short rapid moves. They have the advantage of being able to operate without feedback devices and this, coupled with the absence of brushes, makes stepping motors virtually maintenance free. They give a noncumulative error over any distance and are inherently digital in operation as their operation is based on converting electrical pulses into mechanical movement in fixed increments. Stepping motors find applications in many industrial areas such as packing machines, conveyor systems, robot arm movement, lift and stack machine tools.Despite the extent of its use in specialist positioning applications the construction and operation of the hybrid stepping motor is not as well known as other brushless drives, such as induction, brushless DC and switched reluctance motors. This article highlights how its unusual construction gives rise to a unique ability to deliver highprecision positioning without requiring particularly plex control circuits.Hybrid stepping motor driveA block diagram of a hybrid stepping motor and drive is shown in Fig. 1 and consists of a hybrid stepping motor, power converter and controller.The hybrid stepping motor is a synchronous excited by AC current supplied by the power converter. It is usual for the power converter to incorporate a phase current sensor so that the excitation level can be controlled to suit the motor rating and load conditions. The controller is responsible for generating the phase excitation sequence such that the drive acts according to the requirements given by the user input. Whilst a stepping motor drive does not require a shaft position sensor simply to rotate, greater control of performance can be achieved where position information is available.Hybrid stepping motors usually have two, three or five electrical phase windings. Twophase motors are the most mon, as this keeps the power electronic circuits relatively simple. Fivephase motors3 can, however, offer greater positional accuracy without requiring a shaft position sensor. Since the principles of operation are mon for the whole motor family, this article will concentrate on the construction and operation of the twophase hybrid stepping motor and drive.Twophase hybrid stepping motor：construction, operation and analysisThe twophase hybrid stepping motor is illustrated in crosssection in Fig. 2 and consists principally of a stator and rotor, both of which are typically constructed from stacked laminations of electrical grade steel. The stator has eight poles, four for each phase, which widen at the tips to a group of teeth. Each stator pole has a winding in the form of a short pitched phase coil. These are connected, usually in series, to form two electrically independent motor phases, des