过程控制习题1.ppt

1、8，Please describe main difference between the closed-loop control and the feedforward control. 请描述闭环控制和前馈控制的主要区别。,9，There is a process control system shown in Figure Please judge whether the control system is correction. (Please draw out the block diagram of the control system according to the craft

2、 flow diagram of the system.),有一个过程控制系统如图所示，请判断控制系统是否正确。（请根据系统的工艺流程图，画出控制系统的结构框图。） steam 蒸汽 direct action controller 直接行动控制器,10. For to determine the dynamic state characteristic of a temperature object, we adopt the pulse responds experiment method. In testing, the pulse width is a t0=10 min, the a

3、mplitude value of the pulse is the 20 C0/ h, and the record dates are follows form: (1), Please draw the pulse response curve of the object, and convert it into the step-change response curve; (2), Please determine the dynamic state characteristic parameters of the object.,要确定温度对象的动态特性，我们采用脉冲响应试验方法。

4、在测试中，脉冲宽度为t0 = 10分钟，脉冲的振幅值是20 C0 /小时，日期的记录如下表： 1.请绘制对象的脉冲响应曲线，并将其转换成阶跃响应曲线； 2.请确定对象的动态特性参数。,11，Please classify the dc motor position control system in Figure 2 as either regulator or follow-up. Explain your answer.,请把图2中的直流电机位置控制系统分类，调节或是跟踪。解释你的答案。 setpoint 设定值 operational amplifier 运算放大器 power amplifier 功率放大器 gear 齿轮 position sensor 位置传感器 measured position 测量位置 schematic diagram 示意图,12，Please draw a block diagram of the temperature control system in Figure 2 and identify each block in the diagram.,请绘制鉴别图2温度控制系统的结构框图。 electro pneumatic convertor 电动气动