卒業論文(前刷り)
卒業論文(前刷り)
卒業論文(前刷り)
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
1/3<br />
‘0133<br />
12 <br />
<br />
<br />
<br />
1 <br />
3 L=400mm <br />
<br />
<br />
<br />
a=26mm <br />
<br />
4 a=4mm <br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
a=26mm <br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
80<br />
Probe Speaker Without Probe<br />
(<br />
)<br />
Microphone<br />
2400mm<br />
<br />
L<br />
70<br />
4400mm<br />
6400mm<br />
d <br />
250mm<br />
<br />
<br />
60<br />
<br />
<br />
50<br />
<br />
a 2 4 6mm L 200 400<br />
800<br />
40<br />
<br />
<br />
250mm <br />
30<br />
0 1000 2000 3000<br />
<br />
Frequency [Hz]<br />
<br />
1W <br />
<br />
3<br />
(L=400mm)<br />
Holding Parts<br />
Socket<br />
Probe Wind Screen<br />
80<br />
Probe Speaker Without Probe<br />
Microphone<br />
4200mm<br />
70<br />
4400mm<br />
L<br />
d<br />
4800mm<br />
Probe<br />
Microphone<br />
a<br />
[mm]<br />
1<br />
Speaker<br />
Sound Pressure Level [dB]<br />
60<br />
50<br />
40<br />
30<br />
0 1000 2000 3000<br />
250<br />
[mm]<br />
Frequency [Hz]<br />
Sound Level Meter Low Pass Filter FFT Analizer 4<br />
(=4mm)<br />
2<br />
Sound Pressure Level [dB]<br />
250mm
Attenuation Level [dB]<br />
10<br />
0<br />
-10<br />
AC Motor<br />
95 300<br />
250mm<br />
[mm]<br />
-20<br />
Sound Level Meter A/D Converter Personal Computer<br />
0 1000 2000<br />
Frequency [Hz]<br />
<br />
7<br />
5<br />
( 4mm 400mm)<br />
Probe<br />
Measuring<br />
Microphone<br />
Area<br />
Air Flow<br />
Probe<br />
50<br />
Probe<br />
Microphone<br />
Nozzle<br />
100 ×100<br />
Speaker<br />
Feed Screw<br />
Puls Motor<br />
30 0<br />
95<br />
Sound Level Meter<br />
Probe<br />
Microphone<br />
3 00<br />
Air Flow<br />
Speaker 100<br />
300<br />
FFT Analizer<br />
2/3<br />
Measuring<br />
Area<br />
Speaker<br />
100<br />
Nozzle<br />
100 ×100<br />
[mm]<br />
Personal Computer<br />
Total Pressure<br />
[mm]<br />
Pressure Indicator<br />
Atomospheric Pressure<br />
8<br />
Straight Pipe<br />
6<br />
<br />
<br />
4mm 400mm <br />
300<br />
<br />
5 4mm 400mm <br />
<br />
30<br />
<br />
395<br />
<br />
<br />
9<br />
<br />
<br />
<br />
100mm 8<br />
5 <br />
<br />
<br />
<br />
100100mm <br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
6<br />
<br />
<br />
100100mm <br />
0.1W <br />
1000Hz <br />
1530m/s <br />
<br />
50mm <br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
9 <br />
d 135710mm 530m/s 5m/s<br />
<br />
<br />
<br />
7 <br />
<br />
A <br />
<br />
100100mm <br />
<br />
300mm <br />
80mm <br />
5dB <br />
1 5
3/3<br />
600<br />
85<br />
Difference Pressure [Pa]<br />
500<br />
400<br />
300<br />
200<br />
100<br />
0<br />
Thickness of Wind Screen<br />
Without Wind Screen<br />
1mm<br />
3mm<br />
5mm<br />
7mm<br />
10mm<br />
90<br />
95<br />
100<br />
105<br />
105<br />
100<br />
95<br />
110<br />
105<br />
Sound Pressure Level [dB(A)]<br />
-100<br />
0 5 10 15 20 25 30 35<br />
120<br />
100<br />
Flow Velocity [m/s]<br />
90<br />
10<br />
80<br />
60<br />
Flow Velocity<br />
15m/s (O.A=102 dB)<br />
30m/s (O.A=100 dB)<br />
95<br />
(a) [m/s]<br />
Air Flow<br />
90<br />
40<br />
0 1000 2000<br />
95<br />
Nozzle<br />
Frequency [Hz]<br />
<br />
105<br />
11<br />
<br />
100 105<br />
110<br />
105<br />
Air Flow<br />
0.1W1000Hz <br />
01530m/s<br />
110 110<br />
<br />
<br />
100<br />
<br />
10 <br />
<br />
<br />
(c) 30[m/s]<br />
<br />
5mm 0 Pa <br />
5mm <br />
<br />
120 110 100 90 80<br />
<br />
0 <br />
Sound Pressure Level [dB]<br />
5mm <br />
<br />
11 1530m/s <br />
12<br />
<br />
1000Hz <br />
<br />
30m/s <br />
<br />
<br />
<br />
A <br />
12(a)(b)(c) 01530m/s <br />
<br />
<br />
(1)<br />
<br />
<br />
<br />
12(a)(b)<br />
(2)<br />
<br />
<br />
15m/s <br />
<br />
<br />
(3)<br />
<br />
<br />
12(c)<br />
30m/s <br />
<br />
<br />
<br />
<br />
<br />
(1989)<br />
<br />
100<br />
105<br />
100<br />
110<br />
(b) 15[m/s]<br />
Nozzle
Change language