【摘要】 在化学分析和化工生产许多场合,需要严格控制溶液的PH值变化。本文首先设计了一种比较较简单的计算机控制系统,适用于一些对PH值变化要求不是很严的场合,随后从理论上设计了一种自适应控制系统,该系统对于不同的环境以及外部随机干扰,都可使被控对象的PH值最终维持在某一期望值上。该系统有助于提高化学分析和化工生产的自动化程度,具有一定的实用价值。更多还原

【Abstract】 To many cases in chemistry analysis and production, controlling the valueof PH in solution are needed strictly. At frist, this article has designed asimple computer controlled system. It suits the cases in which to control thevariation on the value of PH isn’t required very precisely. Then, the articledesigns a seifadjusted controlling systemt theoretically, the system can keep theobject’s value of PH in a expected value at last, Whatever with different surro-undings or with outer interference at random, the system will have some usefulvalue and be helpful to the depth of automation chemistry analysis and production.更多还原