自動化專業(yè)英語ppt課件(參考版)
2025-05-06 03:42本頁面
【正文】 。本文提出了兩種不同負載類型傳動系統(tǒng)的電機轉(zhuǎn)子初始位置確定方法，并在一類實際系統(tǒng)中得到實現(xiàn)。 5. 本文研究了無 UVW位置信號檢測的永磁同步電機控制方法。 4. 本文簡單介紹了基于神經(jīng)網(wǎng)絡 (neural work)預測控制 (predictive control)的基本原理。 2. 采用能耗制動可以克服電機的慣性，使電機快速停下來。 or both shunt and series windings may be used (), resulting in a pound machine. 作業(yè) 為本文寫一篇 100— 150單詞的英文摘要，并選關鍵詞。 Hybrid systems 課堂練習 以英譯中為主 The brushes are so placed that when the sides of an armature turn (or coil) pass through the middle of the region between field poles, the current though it changes direction. This makes all the conductors under one pole carry current in one direction. 第1段 第2段 Stator: This part of the machine does not move and normally is the outer frame of the machine . Rotor: This part of the machine is free to move and normally is the inner part of the machine. Both stator and rotor are made of ferromagic materials. In most machines, slots are cut on the inner periphery of the stator and outer periphery of the rotor structure. Conductors are placed in these slots. The iron core is used to maximize the coupling between the coils (formed by conductors) placed on the stator and rotor, to increase the flux density in the machine and to decrease the size of machine. If the stator or rotor (or both) is subjected to a timevarying magic flux, the iron core is laminated to reduce eddy current losses . 第3段 第4段 The conductors placed in the slots of the stator or rotor are interconnected to form windings. The winding in which voltage is induced is called the armature winding. The winding through which a current is passed to produce the primary source of flux in the machine is called the field winding. Permanent mags are used in some machines to provide the major source of flux in the machine. 第5段 The voltage induced in the terms of the armature winding is alternating. A mutatorbrush bination is used as a mechanical rectifier to make the armature terminal voltage unidirectional and also to make the . wave due to the armature current fixed in space. The brushed are so placed that when the sides of an armature turn(or coil) pass through the middle of the region between field poles, the current though it changes direction. This makes all the conductors under one pole carry current in one direction
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