reversing drive

The stroke reversing of the hydraulic drive reciprocating pump is controlled by the PC, which simplifies the electrical lines, enhances the controlling flexibility, and possesses the peculiarities of high controlling precision, good reliability, convenient maintenance and debugging as well as alterable programming.

液压驱动往复泵的行程换向由PC控制，简化了电气线路，增强了控制的柔性，并具有控制的精度高、可靠性好、维护调试方便、程序可变等特点。

Drive characteristics and rectiformer choosing method of 1 450 mm six-roller reversing cold-rolling mill train are described. Calculation and choosing method of some important parameters of rectiformer and reactor, such as voltage, capacity, short circuit impedance and inductance are given.

介绍了1450mm六辊可逆冷轧机组的传动特点和整流变压器的选用，并给出了整流变压器及进线电抗器的重要参数电压、容量、短路阻抗及电感量等的计算和选用方法。

Some problems on designing drive systems of reversing cold mill were discussed.

讨论了设计一套经济、高效的可逆冷轧机组电控系统应注意的几个问题.