摘要
对德国Ｌｅｎｚｅ公司４９系列可逆调速控制器的可逆运行原理进行了分析，其旋向存贮电路较具特色，值得学习与借鉴。
In this paper we have discussed the 49 series reverible speed adjusting controller of Lenze made in Germany, We have analysed the theory of reversible running in details. We think this kind of rotating storage circuit is worthy of bing studied and used.
关键词
可逆调速
调速系统
直流电机
控制器
reverible speed adjusting
detecting
rotating storage
