This paper introduces three sequential control design methods of PLC ladder diagram with an example, which based on the example of the kind of S7-200 PLC from SIEMENS.

本文以西门子s7 - 200型号PLC为例，用一个具体的实例介绍了PLC梯形图的三种顺序控制设计方法。

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Discussing a kind of power topological solution and its current control method of the three-phase energy feedback type electronic power load used in aero-generator testing.

论述了一种用于航空发电机测试用的三相馈能式电子负载功率拓扑方案及其电流控制策略。

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This thesis explains a kind of three-element value cascade control method which is applied in the power plant to control the water level in the steam boiler.

文章介绍了一种已实际应用的电厂锅炉汽包水位三冲量串级控制方法。

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Working with 400 school children aged between nine and 11, the team assigned whole classrooms either to perform and note down three kind acts per week or - as a control group - to keep a diary of three locations they visited each week.

BBC: Kinder children are more popular