大学MOOC Automatic Control Theory(Beijing Jiaotong University)1458252161 最新慕课完整章节测试答案

Chapter 1 test. Mathematical Model of Control System

1、单选题：
‍If the feed-forward transfer function of a system is G(s)，feedback block is H(s)，the system open-looptransfer function is ‏
选项：
A: G(s)H(s)
B: G(s)
C: G(s)/(1+G(s)H(s))
D: G(s)/H(s)
答案: 【 G(s)H(s)】

2、单选题：

‌If the closed-loop transfer function of the unity-feedback control system is   , then the open-loop transfer function of the system is 

‌选项：
A:
B:
C:
D:
答案: 【 】

3、单选题：
​Which one is correct about system transfer function?‏
选项：
A: Independent of the input signal and related to the system structure and parameters.
B: It is related to input signal and system structure and parameters.
C: Related to input signal, independent of system structure and parameters.
D: It has nothing to do with system structure and is related to system parameters.
答案: 【 Independent of the input signal and related to the system structure and parameters.】

4、单选题：
‌Transfer function is suitable for  (     ) system.‍
选项：
A: Linear time-invariant system with single input and single output
B: Linear time-varying system with single input and single output
C: multiple input and multiple output
D: nonlinear system
答案: 【 Linear time-invariant system with single input and single output】

5、单选题：
​For a LTI system, the unit-impulse response can be obtained by differentiating the corresponding          response. ‏
选项：
A: unit-step
B: unit-ramp
C: unit-parabolic
D: sinusoidal
答案: 【 unit-step】

6、单选题：

​Obtain the transfer function of  U0(s)/Ui(s)

‏选项：
A:
B:
C:
D:
答案: 【 】

7、单选题：

‌System dynamic structure block is shown as below，R(s)is input signal，N(s)is disturbance signal，obtain the transfer function of C(s)/R(s)  

‏选项：
A: (G1G2+G1G3(1+G2H))/(1+G2H+G1G2+G1G3+G1G2G3H)
B: (G1G2+G1G3(1+G2H))/(1+G2H+G1G2+G1G3)
C: (G1G2)/(1+G2H+G1G2+G1G3+G1G2G3H)
D: (G1G2+G1G3)/(1+G2H+G1G2+G1G3+G1G2G3H)
答案: 【 (G1G2+G1G3(1+G2H))/(1+G2H+G1G2+G1G3+G1G2G3H)】

8、单选题：

‏System dynamic structure block is shown as below，R(s)is input signal，N(s)is disturbance signal，obtain the transfer function of C(s)/N