2、逻辑设计法

逻辑设计法是利用逻辑代数来进行电路设计，从生产机械的拖动要求和工艺要求出发，将控制电路中的接触器、继电器线圈的通电与断电，触点的闭合与断开，主令电器的接通与断开看成逻辑变量，根据控制要求将它们之间的关系用逻辑关系式来表达，然后再化简，做出相应的电路图。

逻辑设计法的优点是能获得理想、经济的方案，但这种方法设计难度较大，整个设计过程较复杂，还要涉及一些新概念，因此，在一般常规设计中，很少单独采用。其具体设计过程可参阅专门论述资料，这里不再作进一步介绍。

140ACO02000

140ACO02000

140ACO02000

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