新型電動(dòng)自行車直流無(wú)刷電動(dòng)機(jī)的設(shè)計(jì)與控制

對(duì)新型電動(dòng)自行車的關(guān)鍵動(dòng)力部件———直流無(wú)刷電機(jī)作了深入的剖析與設(shè)計(jì)。本文所介紹的電動(dòng)自行車中使用的直流無(wú)刷電機(jī),系參考英國(guó)Patscentre 國(guó)際實(shí)驗(yàn)室協(xié)作設(shè)計(jì)產(chǎn)品,采用全電子操縱系統(tǒng),電動(dòng)自行車的最高時(shí)速可達(dá)25km/ h ,一次充電行程為64km。該電機(jī)的功率為350W,重6kg ,具有自充電與過(guò)壓過(guò)流全保護(hù)功能,效率可達(dá)85 % ,性能綜合指標(biāo)遠(yuǎn)優(yōu)于傳統(tǒng)的以有刷電機(jī)為動(dòng)力的電動(dòng)自行車。
關(guān)　鍵　詞:位置傳感器;無(wú)接觸換向;氣隙磁密
Abstract : This paper intends to make a better design on the D. C. motor , the key part of the new style electric bicycle , after the? detailed analysis. The D. C. motor without coal brushes is in a new style , with higher work rate , less wear and tear and lower noise. This kind of motor discussed in this paper , is designed in reference to the product designed by Patscentre International Lab , μK, which is operated with electronic system completely , in the top speed of 25km per hour , covering the distance of 64km each time it’s charged. The motor is 6kg in weight , with the power of 350W, which has the function of self2charge , and complete pro2
tection when the electric current and voltage is over the normal levels in the rate close to 85 %. The comprehensive index of the functions of this kind of motor is much better than that of all the traditional ones with coal brushes.
Key words : positional sensor ; exchange of A. C. and D. C. ; the air2space inside and the thickness of magnetic field intensity