Solution of module 1
1.3 The system in Fig. P1.3 shows an operator attempting to maintain the speed of a conveyor carrying manufactured parts through a spray booth. When more boxes are placed on the conveyor, it slows down, while fewer boxes allow it to speed up.
(a) Draw a block diagram of the system indicating the principal elements
(b) Redesign an automatic control system without any operator.
图 P1-3C 自动控制闭环系统控制框图