Lab Manual

Experiment

FREQUENCY SWEEP

Created by

Hong-Van Tran

Lab of Electromechanical Energy

Department of Precision Engineering.

National Chung Hsing University

April 19, 2018

CONTENTS

DESCRIBE ................................................................................................. pape 1

PURPOSE ............................................................................................................ 1

MAIN FLOW CHART ............................................................................................ 1

A. Materials ................................................................................................................ 1

B. Setup ...................................................................................................................... 5

a. Connect Shaker – Power amplifier .................................................................. 5

b. Connect Power amplifier – Function generator .............................................. 6

c. Connect Function generator – Computer ........................................................ 6

d. Connect Sensor Head Spot (LK-H150) – Main controller (LK-G5001V) ........ 6

e. Connect Sensor Head Spot (LK-H020) – Main controller (LK-G5001V) ........ 7

f. Connect Main controller (LK-G5001V) – Computer ......................................... 7

g. Setup Your model – Shaker7

C. Experiment ............................................................................................................ 8

Sub flowchart ....................................................................................................... 8

a. Adjust 02 sensor head spot ............................................................................. 9

b. Turn on Function generator ............................................................................. 9

c. Open software ................................................................................................... 9

d. Turn on Amplifier ............................................................................................ 10

e. Adjust parameters – LabVIEW ....................................................................... 11

f. Enable signal – CH1 (Function generator) ..................................................... 11

g. Measure vibration – Shaker ............................................................................ 12

h. Amplitude (amp.) ............................................................................................. 13

i. Amp. Amp(refer) ............................................................................................. 13

j. Record Amp. Into Table ................................................................................... 13

k. Change Vp-p – LabVIEW ................................................................................. 13

l. freq = freq + step .............................................................................................. 13

m. freq >= freq_max ............................................................................................ 13

n. Unable signal – CH1 (Function generator) .................................................... 13

o. Set value Table into LabVIEW ........................................................................ 14

p. Enable signal – CH1 (Function generator) .................................................... 14

q. Change to run automatic – LabVIEW ............................................................ 14

r. Measure vibration – your model ..................................................................... 14

D. Results ................................................................................................................. 15

1 | 1 5 F r e q u e n c y s w e e p

DESCRIBE

During the frequency sweep the frequency is varied while the amplitude of the

deformation - or alternatively the amplitude of the shear stress - is kept constant. For

the analysis the storage and loss modulus are plotted against the frequency. The data

at low frequencies describe the behavior of the samples at slow changes of stress.

PURPOSE

- Understanding the control parameters of software LabVIEW (Function

generator (OK)).

- How to setup to measure vibration “Frequency sweep”

MAIN FLOW CHART

A. Materials

No. Instrument Model Qty. Notes

1 Shaker APS113 01

2 Power Amplifier APS125 01

3 Power supply 24VDC KV-U2 01

4 Main controller LK-G5001V 01 Laser displacement sensor

5 Sensor Head Spot LK-H150 01 Laser displacement sensor

6 Sensor Head Spot LK-H020 01 Laser displacement sensor

7 Function generator WW5062 01 WW5062

No. Software Notes

1 LK-Navigator 2 Configuration Software for the LK-G5000 Series

2 LabVIEW Control Function generator (WW5062)

BEGIN

Materials

Setup

Experiment

Results

END

A

B

C

D

2 | 1 5 F r e q u e n c y s w e e p

Equipments

1. Shaker (APS113)

http://web.nchu.edu.tw/~daw/Manual/APS_113_HF_Manual_en.PDF

http://web.nchu.edu.tw/~daw/Manual/APS113_Instruction.pdf

http://web.nchu.edu.tw/~daw/Manual/APS113_Setup-instruction.pdf

2. Power Amplifier (APS125)

http://web.nchu.edu.tw/~daw/Manual/APS_125_Data_Sheet_en.PDF

http://web.nchu.edu.tw/~daw/Manual/Connection_APS_113.pdf

3. Power supply KV-U2 24V

3 | 1 5 F r e q u e n c y s w e e p

Laser displacement sensor

4. LK-G5001V (Main controller)

http://web.nchu.edu.tw/~daw/SOP/KeyenceLKH020_disp_sensor_SOP.pdf

Sensor Head Spot Type

5. LK-H150

6. LK-H020

https://www.keyence.com/products/measure/laser-1d/lk-g5000/models/lk-

h150/index.jsp

https://www.keyence.com/products/measure/laser-1d/lk-g5000/models/lk-

h020/index.jsp

7. Function generator (WW5062)

http://web.nchu.edu.tw/~daw/Manual/WW5061_2_User_Manual.pdf

4 | 1 5 F r e q u e n c y s w e e p

Software

1. LK-Navigator 2

2. LabVIEW

5 | 1 5 F r e q u e n c y s w e e p

B. Setup

a. Connect Shaker – Power amplifier

Shaker Power amplifier

Shaker (APS113)

Sensor Head Spot

(LK-H020)

Sensor Head Spot

(LK-H150)

Power amplifier

(APS125)

Main controller

(LK-G5001V)

Function generator

(WW5062)

Power supply

(KV-U2 - 24VDC)

Power supply

(110 VAC)

a

b

c f

d

e

Your model g

USB

USB

6 | 1 5 F r e q u e n c y s w e e p

b. Connect Power amplifier – Function generator

Power amplifier Function generator

c. Connect Function generator – Computer

Use cable USB to connect Function generator and Computer

d. Connect Sensor Head Spot (LK-H150) – Main controller (LK-G5001V)

Main controller (LK-G5001V) Sensor Head Spot type LK-H150

CH1

1 HEAD

7 | 1 5 F r e q u e n c y s w e e p

e. Connect Sensor Head Spot (LK-H020) – Main controller (LK-G5001V)

Main controller (LK-G5001V) Sensor Head Spot type LK-H020

f. Connect Main controller (LK-G5001V) – Computer

Use cable USB to connect Main controller (LK-G5001V) and Computer

g. Setup Your model – Shaker

Your model

Shaker

8 | 1 5 F r e q u e n c y s w e e p

C. Experiment

Sub flowchart

BEGIN

Adjust 02

sensor head spot

Turn on

Function generator

Open Software

Turn on

Amplifier

Adjust parameters

LabVIEW

1

C

No Amp. Amp(refer)

Yes

Record Amp.

into Table

freq = freq + step

freq >= freq_max

Yes

Unable signal

CH1 - generator

Change Vp-p

LabVIEW

a

b

c

2

C

i

j k

l

d

No

e

m

2

C

Change to run Auto

LabVIEW Enable signal

CH1 - generator q

f

n

Set value Table

into LabVIEW

Measure vibration

Your model r Measure vibration

Shaker o

2

C

g

END

data

Your model s

Amplitude

(amp.)

1

C

Enable signal

CH1 - generator h p

9 | 1 5 F r e q u e n c y s w e e p

a. Adjust 02 sensor head spot

Step1: Adjust Sensor Head spot type LK-H020

- LK-H020 measure Shaker

- Adjust position of LK-H020 until the led change yellow to blue

Step 2: Adjust Sensor Head spot type LK-H150

- LK-H150 measure your model

- Adjust position of LK-H150 until the led change yellow to blue

b. Turn on Function generator

c. Open software

Step 1: Open software LK-Navigator 2

- Double click the LK-Navigator 2 icon to launch LK-Navigator 2.

Step 1

Step 2

Led blue

Led blue

Here

10 | 1 5 F r e q u e n c y s w e e p

Step 2: Open software LabVIEW

- Double click the LabVIEW icon to launch LabVIEW

- Double click the project “Function generator (OK)” icon to launch function

d. Turn on Amplifier

Step 1: Unable signal (CH1 – Function generator)

Step 2: Adjust volume (Current Limit) to min

Step 3: Adjust volume (Gain) to Reset (0)

Step 4: Turn on power

Step 5: Adjust volume (Current Limit) (slowly)

Step 6: Adjust volume (Gain) (slowly)

- The value is no more than a half maximum

Attention: During experiment the Led current turn on (red color)

Step 1: Turn of power Amplifier

Step 2: Unable signal (CH1 – Function generator)

Step 3: Adjust volume (Current Limit) to min

Step 4: Adjust volume (Gain) to Reset (0)

Step 5: Turn on power

Step 6: Adjust volume (Current Limit) (slowly)

- The position more than position before

Step 7: Adjust volume (Gain) (slowly)

- The value is the same a value before

Gain Current Limit

Power

Led current

11 | 1 5 F r e q u e n c y s w e e p

e. Adjust parameters – LabVIEW

Step 1: UP/DOWN

- Experiment up sweep or down sweep

Step 2: Minimum (Hz)

- The minimum frequency

Step 3: Maximum (Hz)

- The maximum frequency

Step 4: Step (Hz)

- Each Time(ms) the frequency signal increase 1 step

Step 5: Time(ms)

- The time change the frequency signal

Step 6: Frequency signal

- The minimum frequency

Step 7: Amplitude signal

- The minimum amplitude signal

f. Enable signal – CH1 (Function generator)

1 2 3 4 5

Here

6 7

12 | 1 5 F r e q u e n c y s w e e p

g. Measure vibration – Shaker

Step 1: Data Storage setting

- Choose amount of Data stored

- Choose Sampling cycle x

- Selected OUT01

- Click Send to Controller(S)

Step 2: Record data

- Click Start Storage

2 3

13 | 1 5 F r e q u e n c y s w e e p

Step 3: Load data

- Click Storage Data Readout (L)

h. Amplitude (amp.)

- Measure maximum signal

- Measure minimum signal

- Amp. = Max – Min (signal)

i. Amp. Amp(refer)

- Compare measure amplitude with desired amplitude

j. Record Amp. Into Table

- If measure amplitude is equal desired amplitude, then record data into Table

No. Frequency (Hz) Vp-p (amplitude signal)

0 10 0.05

1 10.1 0.05

2 10.2 0.05

… … …

k. Change Vp-p – LabVIEW

- If measure amplitude is no equal desired amplitude, then increase the

amplitude signal.

l. freq = freq + step

- Change frequency only 1 step

m. freq >= freq_max

- If current frequency signal is more than maximum frequency signal, then

completed to get the range amplitude signal each frequency.

n. Unable signal – CH1 (Function generator)

- Turn off the signal – CH1

Here

Here

14 | 1 5 F r e q u e n c y s w e e p

o. Set value Table into LabVIEW

No. Frequency (Hz) Vp-p (amplitude signal)

0 10 0.05

1 10.1 0.05

2 10.2 0.05

… … …

p. Enable signal – CH1 (Function generator)

q. Change to run automatic – LabVIEW

r. Measure vibration – your model

Step 1: Record data

- Click Start Storage

Here

Here

1 2

15 | 1 5 F r e q u e n c y s w e e p

Step 2: Load data

- Click Storage Data Readout (L)

Attention: Choose Data Storage setting before step q (Change to run automatic –

LabVIEW)

- Choose amount of Data stored

- Choose Sampling cycle x

- Selected OUT03

- Click Send to Controller(S)

D. Results

Step1: Get data

Step 2: Turn off Function generator

Step 3: Turn off Amplifier

Step 3.1: Adjust volume (Gain) to Reset (0)

Step 3.2: Adjust volume (Current Limit) to min

Step 3.3: Turn off power

Step 4: Unplug all off power instruments

Attention:

- Clean area your experiment

- Return the equipment to original locations