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参数资料
| 型号： | RD-19230FG-203 |
| 厂商： | DATA DEVICE CORP |
| 元件分类： | 位置变换器 |
| 英文描述： | SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, PQFP64 |
| 封装： | 0.520 X 0.520 INCH, GREEN, PLASTIC, QFP-64 |
| 文件页数： | 11/23页 |
| 文件大小： | 476K |
| 代理商： | RD-19230FG-203 |
19
Data Device Corporation
www.ddc-web.com
RD-19230
W-05/08-0
+S
-S
SIN
aR
R
+C
-C
COS
R'
-
+
-
+
R/2
R
aR
bR
2R'
R'
bR
+RH
-RL
R'
R
VB
VA
FS = 2V
-2V
REF
Notes:
1. R' > 10 k
Ω
2. Consideration for the value of R is LVDT loading.
3. RMS values given.
4. Use the absolute values of Va and Vb when subtracting per the formula for calculating resistance values,
and then use the calculated sign of "Va and Vb" for calculating SIN and COS. The calculations shown
are based upon full scale travel being to the Va sideof the LVDT.
5. See the RDC application manual for calculation examples.
6. Negative voltages are 180 degrees phase from reference.
VB
VA
LVDT
OUTPUT
+FS
-FS
NULL
COS
SIN
RD-19230
INPUT
-FS
+FS
NULL
1V
2V
1
b =
=
VAnull
VBnull
2
a =
(VA - VB) max
a
SIN = -1V +
(VA - VB)
2
a
COS = -1V -
(VA - VB)
2
FIGURE 25. 3-WIRE LVDT SCALING CIRCUIT & CALCULATIONS
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