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參數(shù)資料
| 型號： | SD-14621DS-454W |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 位置變換器 |
| 英文描述： | SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, CQIP54 |
| 封裝： | 1.500 X 0.780 INCH, 0.210 INCH HEIGHT, HERMETIC SEALED, CERAMIC, DIP-54 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 150K |
| 代理商： | SD-14621DS-454W |
7
Data Device Corporation
www.ddc-web.com
SD-14620
J-04/03-0
-12
dB/oct
GAIN = 4
BA
2A
-6 dB/oct
10B
ω (rad/sec)
2A
2 2 A
ω (rad/sec)
f
= BW =
3dB
2 A (Hz)
π
CLOSED LOOP
OPEN LOOP
- GAIN = 0.4
(B=A/2)
(CRITICALLY DAMPED)
FIGURE 6. BODE PLOTS
ERROR PROCESSOR
INPUT
(
θ)
VELOCITY
OUT
DIGITAL
POSITION
OUT (
φ)
VCO
CT
S
A
+ 1
1
B
S
+ 1
10B
H = 1
+
-
e
A2
S
2
S
A
+1
(
)
B
2
S
+1
(
)
10B
Open Loop Transfer Function =
WHERE:
2
A = A A
1
2
FIGURE 5. TRANSFER FUNCTION BLOCK DIAGRAM
DYNAMIC PERFORMANCE
A type II servo loop (Kv =
∞) and very high acceleration con-
stants give the SD-14620 superior dynamic performance.
TRANSFER FUNCTION AND BODE PLOT
The dynamic performance of the converter can be determined
from its Functional Block Diagram (FIGURE 1), its transfer func-
tion block diagram (FIGURE 5), and its Bode Plots (open and
closed loop - FIGURE 6). Values for the transfer function block
can be obtained from TABLE 4.
The open loop transfer function is as follows:
where A is the gain coefficient
and B is the frequency of lead compensation
ACCURACY AND RESOLUTION
TABLE 5 lists the total accuracy including quantification of the
various resolutions and accuracy grades.
2
S
A
+1
(
)
B
2
S
+1
(
)
10B
Open Loop Transfer Function =
TABLE 4. DYNAMIC CHARACTERISTICS
DEVICE TYPE
60 Hz
“S” OPTION
EACH CHANNEL
Input Frequency
Bandwidth (Closed Loop)
Ka
A1
A2
A
B
Hz
1/s2
1/s
47 - 5K
15
830
0.17
5K
29
14.5
1K - 5K
150
110K
2.47
44.4K
333
166
RESOLUTION
BITS
16
14
12
10
16
14
12
10
Tracking Rate (rps)
typical
minimum
Acceleration ( 1 LSB lag)
Settling Time (179° step max)
rps
deg/s2
msec
0.5
0.4
11.3
2500
2
1.6
45
1100
8
6.4
180
500
32
25.6
720
400
2.5
2
610
232
10
8
2440
150
40
32
9760
78
160
128
39K
51
400 Hz
360 - 5K
56
53K
0.41
41K
130
81
16
14
12
10
2.5
2
93
360
10
8
372
180
40
32
1490
100
160
128
5950
90
TABLE 5. ACCURACY/RESOLUTION
VERSION
RESOLUTION (minutes)
10 BIT
12 BIT
14 BIT
16 BIT
SD-1462X-XX
ACCURACY
(minutes)
±4 +1 LSB
±2 +1 LSB
42.2
10.5
5.3
3.3
4.3
2.3
SD-1462X-XS
(“S” option)
* 1.3 minute accuracy available for “S” option only.
Inclusive of 1 bit of jitter.
±4 +1 LSB
±2 +1 LSB
±1 +1 LSB
25.1
23.1
22.1
9.3
7.3
6.3
5.3
3.3
2.3
4.3
2.3
* 1.3
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