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参数资料
| 型号： | RD-19230F-302T |
| 英文描述： | Converter |
| 中文描述： | 转换器 |
| 文件页数： | 15/20页 |
| 文件大小： | 152K |
| 代理商： | RD-19230F-302T |
15
Data Device Corporation
www.ddc-web.com
RD-19230
LVDT MODE
As shown in TABLE 1, on page 2, the RD-19230 unit can be
made to operate as an LVDT-to-digital converter.In this mode the
RD-19230 functions as a ratiometric tracking linear converter.
When linear AC inputs are applied from a LVDT the converter
operates over one quarter of its range. This results in two less
bits of resolution for LVDT mode than are provided in resolver
mode.
LDVT output signals need to be scaled to be compatible with the
converter input. FIGURE 25 is a schematic of an input scaling
circuit applicable to 3-wire LVDTs. The value of the scaling con-
stant
“
a
”
is selected to provide an input of 2 Vrms at full stroke of
the LVDT.The value of scaling constant
“
b
”
is selected to provide
an input of 1 Vrms at null of the LVDT. Suggested components
for implementing the input scaling circuit are a quad op-amp,
such as a OP11 type, and precision thin-film resistors of 0.1%
tolerance. FIGURE 24 illustrates a 2-wire LVDT configuration.
+S
-S
SIN
aR
R
+C
-C
COS
R
-
+
-
+
R
R
R
aR
1
bR
2R
2R
R
bR
+RH
-RL
R
2
2 WIRE LVDT
REF IN
R
2 V
FS = 2 V
FIGURE 24. 2-WIRE LVDT DIRECT INPUT
TABLE 7. 12-BIT LVDT OUTPUT CODE FOR FIGURE 25
LVDT OUTPUT
+ over full travel
+ full travel -1 LSB
+0.5 travel
+1 LSB
null
- 1 LSB
-0.5 travel
- full travel
- over full travel
MSB
xxxx
1111
1100
1000
1000
0111
0100
0000
xxxx
LSB
xxxx
1111
0000
0001
0000
1111
0000
0000
xxxx
01
00
00
00
00
00
00
00
11
xxxx
1111
0000
0000
0000
1111
0000
0000
xxxx
C
1
= C
2
, set for phase lag = phase lead through the LVDT.
Data output of the RD-19230 is Binary Coded in LVDT mode.The
most negative stroke of the LVDT is represented by ALL ZEROS
and the most positive stroke of the LVDT is represented by ALL
ONES.The most significant 2 bits (2 MSBs) may be used as over-
range indicators. Positive overrange is indicated by code
“
01
”
and
negative overrange is indicated by code
“
11
“
(see TABLE 7).
相关PDF资料 |
PDF描述 |
|---|---|
| RD-19230F-303T | Converter |
| RD-19230FX-202 | Resolver-to-Digital Converter |
| RD-19230FX-202T | Resolver-to-Digital Converter |
| RD-19230FX-203 | Resolver-to-Digital Converter |
| RD-19230FX-203T | Resolver-to-Digital Converter |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RD-19230F-303T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Converter |
| RD-19230FX-202 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Resolver-to-Digital Converter |
| RD-19230FX-202T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Resolver-to-Digital Converter |
| RD-19230FX-203 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Resolver-to-Digital Converter |
| RD-19230FX-203T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:RESOLVER-TO-DIGITAL CONVERTER |
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