五、工业控制系统的组成与类型工业控制系统一般有开环控制与闭环控制之分.开环控制是使被控对象按预先制定的规则进行工作,并不从被控对象提取反馈信息.一些生产过程或机床设备的程序控制属于开环控制性质.闭环控制是在被控对象工作过程中,随时测量各项参数的变化,并根据变化情况对各有关参数进行调节,以达到规定的要求. V. Composition and Types of Industrial Control Systems Industrial control systems generally have open-loop control and closed-loop control. Open-loop control allows the controlled object to work according to pre-established rules and does not extract feedback information from the controlled object. Some The process control of the production process or the machine tool equipment belongs to the open-loop control property. The closed-loop control measures the changes of various parameters at any time during the working process of the controlled object and adjusts the relevant parameters according to the change so as to meet the specified requirements.