KL1488

KL1488從上面的趨勢我們可以了解的是：

1、適當的調整傳動比可以減小對電機扭矩的需求，在速比范圍內，速比的增大可以幫助減小對電機扭矩輸出的需求，而超出這個范圍，傳動比的增大反而會增大扭矩需求。從經濟性（或者節能環保）角度看，這個范圍的臨界值恰恰是扭矩曲線的低點，此時的速比所需的電機小，可以認為“佳”

2、上面說的這個“范圍”－“佳點”，是和電機本身慣量大小有關的。當電機慣量越小，這個速比可調節范圍就越大；電機慣量越大，這個速比可調節范圍就越小。

3、由于電機慣量和速比存在著這樣的關系，不同的電機其所代表的佳傳動比都是不同的，因此在實際選型設計的時候，每更換一款電機的時候，都需要重新考慮速比的佳匹配，可以按照應用需求將上述的趨勢曲線列出來，然后找到匹配好的“電機”和“速比”的組合。

4、需要注意的是，在負載不變的情況下，電機慣量的增大，其實也在某種程度上增大了對電機扭矩的輸出需求――也就是說需要選擇更大的電機了。看看上面的曲線分析，當電機慣量增大十倍，其扭矩需求也增加了好幾倍，而在使用低慣量電機時，我們可以通過調整傳動比改善負載慣量比，而在大慣量電機時，速比調整空間很小。因此實際上我們并不推薦使用中慣量或者大慣量電機。

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