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GE GE693RTM705 austere48v無(wú)刷直流電機(jī)，啟動(dòng)電流18a，正常運(yùn)行時(shí)10-15a，結(jié)合相關(guān)硬件和軟件設(shè)計(jì)，已經(jīng)成功地實(shí)現(xiàn)了對(duì)電動(dòng)摩托車上無(wú)位置傳感器無(wú)刷直流電機(jī)控制。
廈門岳航計(jì)算機(jī)工程有限公司
聯(lián)系人：李素云
企業(yè)QQ：2851195446，2851195466
手機(jī)：18965423501
座機(jī)：0592-5165501
實(shí)驗(yàn)結(jié)果表明，在電源電壓一定的情況下，隨著控制信號(hào)pwm波占空比不斷增大，電動(dòng)機(jī)上的平均電壓隨之變大，速度亦相應(yīng)上升。圖6為整個(gè)過(guò)程的相電流波形，圖7為正常運(yùn)行時(shí)的相電壓波形。圖6中過(guò)程可以分析如下：電機(jī)采用三步啟動(dòng)方式，先進(jìn)行轉(zhuǎn)子預(yù)定位，然后同步加速，加速到一定階段后可以檢測(cè)到反電動(dòng)勢(shì)，當(dāng)檢測(cè)到兩個(gè)反電動(dòng)勢(shì)后進(jìn)入自動(dòng)切換模式，此時(shí)先用電流模式，然后切換到電壓模式由轉(zhuǎn)把控制占空比以控制電機(jī)速度。
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