电子仪表泵柱塞驱动电路的设计

Design of Plunger Drive Circuit of Electrionics Metering Pump

在电子仪表泵柱塞驱动电路中，采用双向电流励磁方式建立起来的对称、三态的磁场，具有抑制剩磁在铸铁或铸钢中产生的作用，因而也就消除了剩磁对柱塞驱动的影响，提高了电子仪表泵工作的可靠性。

With bi-directional exciting current, thesymmetrical and three static magnetic-field is established in plunger drive circuit of electronics meteringpump, which possess thc function of restraining theresidual magnetism in cast iron or cast steel, andeliminates the influence of rcsidual magnetism toplunger drive. Therefore the reliability of electronicsmetering pump is also improved.