5.自动控制的基本概念 工业中的工艺过程由若干个单个过程所构成,它们分别有其控制目标,监视目标,必需将他们有机地联系起来。当技术水平较低,规模也较小的时候,可以依靠操作者的熟练和能力来处理。但是在技术水平高度复杂化,操作条件的数量和质量也增加了的今天,单纯依靠人工 5. The basic concept of automatic control Process in the industry consists of a number of individual processes, which have their own control objectives, monitoring objectives, they must be organically linked. When the technology is low, the scale is small, you can rely on the operator’s skill and ability to deal with. However, in the highly sophisticated technical level, the number and quality of operating conditions have also increased today, relying solely on labor