After "CDM" highfrequency horn coverage matches the design of coverage and low frequency unit features a smooth over-achieved.
经过“CDM”覆盖匹配设计的高频号角与低频单元的覆盖特性实现了平顺的过度。
2
By comparing the characteristic of different technology, the influence on unit stable running by high voltage frequency conversion is summarized. Also the development tendency is predicted.
Owing to the limited frequency of the internal high-speed counter of PLC, the peripheral unit of PLC is used for PLC-based frequency measurement of hydraulic turbine governors.