The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。
The system runs stably with a high control precision because of appropriate control strategy and meets the desired system value of high precision, low dissipation, multi-function switching.
由于采用了合理的控制策略，使得系统运行平稳、控制精度高，达到了高精度、低功耗、多功能切换的指标要求。
The method was researched on how to realize the switching value signal by the way of the PLC in the NC code, and its control logic was illustrated.
研究了数控代码中开关量信号的PLC的实现方法，并对其控制逻辑进行了举例说明。
The electric parameters, switching value and warning information collected by collection module are transfered in order to realize the realtime control by GPRS module.
监测终端将采集模块采集的电力参数、开关量和报警信息通过GPRS模块传输给监控中心，实现实时监控。
The electric parameters, switching value and warning information collected by collection module are transfered in order to realize the realtime control by GPRS module.
监测终端将采集模块采集的电力参数、开关量和报警信息通过GPRS模块传输给监控中心，实现实时监控。
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