TRẮC NGHIỆM HỆ THỐNG ĐIỀU KHIỂN TỰ ĐỘNG

Câu hỏi trắc nghiệm ôn thi cuối kì môn hệ thống điều khiển tự động trên ô tô trường Đại học sư phạm kỹ thuật TP.HCM và nội dung ôn thi.Song song đó là phần giúp đỡ nếu cần từ người upload tài liệu về các chủ đề thuyết trình của môn học.

15 CÂU HỎI TRẮC NGHIỆM CÓ THỂ CÓ TRONG

ĐỀ THI 2017

VÀ NỘI DUNG ÔN THI

A CÂU HỎI TRẮC NGHIỆM

1 ABS controls

A The wheel slip ratios in a range from 10% to 30 %

B The wheel slip ratios at maximum

C The wheel slip ratios at minimum

D The wheel slip ratios in a range from 70% to 90%

2 Which is the correct statement for Cruise Control System?

A CCS maintains the vehicle velocity by controlling the throttle.

B CCS equivalently distributes the braking force for each wheel

C CCS maintains the vehicle velocity by controlling braking pressure

D CCS controls the vehicle velocity based on roads profiles

3 Choose the correct response for this system

Answer :

4 An ABS diagram as follow:

In pressure reducing mode: Port A is closed, Port B is opened, the 5A current is provided for 3-position valves , pump voltage is 12V, valve 1 is opened, valve 2 is opened, valve 3 is opened

5 Given the PID with: KP=0.5; KI=0.3; KD=1 The equivalent transfer function of PID controller is

A (s^2+0.5*s+0.3)/s

B (0.5*s^2+s+0.3)/s

C (0.3*s^2+0.5*s+1)

D (s^2+0.3*s+0.5)/s

6 Given 3 membership functions as follows

A The degree of Opened membership function is 0

B The degree of Opened membership function is 1

C The degree of Middle membership function is 0.4

D The degree of Closed membership function is 1

7 Obtain the transfer function of system

A

B

C

D

8 Which is the correct statement for general state-space equation representation of system

A A is a system matrix, B is a input matrix.

B B is a system matrix, A is a input matric

C A and B are the input matrices

D A and B are the system matrices

9 The transfer function of a system depends on

A System order and system parameters

B Input and output signals of system

C Only input signals.

D Only system parameters

10 Given Matlab code as follows Obtain the transfer function G(s) num = [1 2];

den = conv ([1 2],[1 3]);

G = tf (num,den)

A G(s) = (s+2)/(s^2+5*s+6)

B G(s) = (s^2+5*s+6)/(s+2)

C G(s) = 3*s/(3*s+4)

D G(s) = (3*s+4)/3*s

11 Given the general closed loop feedback control diagram Which is the correct statement?

A A is the controller, B is the actuator, C is the plant, D is the sensor.

B A is the sensor, B is the actuator, C is the plant, D is the controller

C A is the actuator, B is the sensor, C is the plant, D is the controller

D A is the controller, B is the plant, C is the sensor, D is the actuator

12 What is the role of clutch in automatic transmission?

A Connecting 2 rotating components.

B Connecting rotating components to AT case

C Preventing the reverse direction of rotating components

D Disconnecting the rotation when vehicle drivers is shifting gear

13 Given the CCS control diagram as follow What is u(t)?

A Desired vehicle speed.

B Desired steering angle

C Current vehicle speed

D Current steering angle

14 The Laplace Transform of unit impulse is 1

A 1

B 1/s

C s

D 1/s^2

15 What is ECT?

A Electronic Control Transmission.

B Electric Control Transaxle

C Electric Control Unit

D Electronic Control Transaxle

B NỘI DUNG THI

1 Một số hệ thống điều khiển động cơ trên ô tô (25%)

• ABS/TCS

• A/T or ECT

(HỌC THUỘC CẤU TẠO VÀ NGUYÊN LÝ HOẠT ĐỘNG)

2 Control theory (60%)

• Overview of control system

- Open-loop

- Closed-loop

- System component

• Modeling

- Transfer Function

- State Space Equation

• System stability

• System Analysis

• Block diagram

• Control design

- On/of control

- P Control (proportional control)

- PI and PID (optional)

(LẬP TRÌNH TOÀN BỘ CÁC KIẾN THỨC TRÊN MATLAB)

3 Fuzzy Control (15%)