4 Computer control concept(1/3) The computer control system is the use of the computer to achieve automatic control system of the production process. The computer control system(including hardware, software and network structure) is composed of two parts including the controlled objects and the computer body. The following figure is a typical deviation control computer control system 输应量 e 量ut 卹熨囉, D/A Controller controlled (Computer) (The production process) A/D 亚机 陛充过程 of production ============= === 上潇通大 situ.edu.cn
4 Computer control concept(1/3) ◼ The computer control system is the use of the computer to achieve automatic control system of the production process. The computer control system (including hardware, software and network structure) is composed of two parts including the controlled objects and the computer body . The following figure is a typical deviation control computer control system. y 控制器 - 被控对象 给定量 e 执行机构 + r D/A 被控量 测量变送 u A/D 工控机 生产过程 Controller (Computer) controlled object (The production process) Controller - Input e + r D/A u A/D IPC y Controlled object actuator Outerput Measuring transducer Process of production
put u Dutput Controller D/A actuator object AD Measuring transducer i IPC Process of production Controller Controlled object (Computer) (Process of production) 上潇通大 situ.edu.cn
Controller - Input e + r D/A u A/D IPC y Controlled object actuator Output Measuring transducer Process of production Controller (Computer) Controlled object (Process of production)
4 The concept of computer-controlled system (2/3) In the structure can be divided into open loop systems and closed-loop stem Open-loop simple structure, poor performance Closed loop the need of the feedback signal of the controlled object The control procedure( 4): Real-time data acquisition ◆Real- time computing ●Rea|- time control Information management 上潇通大 situ.edu.cn
4 The concept of computer-controlled system （2/3） ◼ In the structure can be divided into open loop systems and closed-loop system ◆ Open-loop: simple structure, poor performance ◆ Closed loop: the need of the feedback signal of the controlled object ◼ The control procedure (4) ： ◆ Real-time data acquisition ◆ Real-time computing ◆ Real-time control ◆ Information management