
變極
The paper introduces the DSP control of brushless DC motor, and the principle, management as well as software correcting of CEMF pole changing. 本文介紹了無刷直流電機(jī)的DSP控制,詳細(xì)介紹了在無刷直流電機(jī)控制中反電勢(shì)檢測(cè)換相的原理; 反電勢(shì)、電流檢測(cè)的管理;
The shadow of the bamboo pole changes as the sun moves. 竹竿的影子便隨著太陽(yáng)的移動(dòng)而變化。
In the gap magnetic field of pole changing synchronous machine,there would be large harmonics,which have some effects on the operating performance of the machine. 由于變極同步電機(jī)氣隙磁場(chǎng)中將存在較大的諧波,這些磁場(chǎng)諧波對(duì)電機(jī)運(yùn)行性能將產(chǎn)生一些影響。
Based on analysis of the ampere conductor harmonics of pole changing windings and the adjusting wave with Fourier Transformation,a discussion has been done in the paper on the symmetry,M. M. F. 在用傅氏變換分析變前極繞組安導(dǎo)波及其調(diào)制波基礎(chǔ)上 ,討論了用逐相安導(dǎo)調(diào)制法得到的變后極繞組的對(duì)稱性、磁勢(shì)諧波含量、磁勢(shì)主波旋轉(zhuǎn)方向及變極方案擇優(yōu)等
reversing method of pole changing 反向法變極