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參數(shù)資料
| 型號(hào)： | AD2S105AP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86% |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大?。?/td> | 292K |
| 代理商： | AD2S105AP |
AD2S105
REV. 0
–10–
MULTIPLE POLE MOTORS
For multi-pole motor applications where a single speed resolver
is used, the AD2S105 input has to be configured to match the
electrical cycle of the resolver with the phasing of the motor
windings. The input to the AD2S105 is the output of a resolver-
to-digital converter, e.g., AD2S80A series. The parallel output
of the converter needs to be multiplied by 2
n–1
, where n = the
number of pole pairs of the motor. In practice this is imple-
mented by shifting the parallel output of the converter left rela-
tive to the number of pole pairs. This will work for motors with
a binary number of pole pairs.
Figure 12 shows the generic configuration of the AD2S80A with
the AD2S105 for a motor with n pole pairs. The MSB of the
AD2S105 is connected to MSB–(n–1) bit of the AD2S80A digi-
tal output, MSB-1 bit to MSB–(n–2) bit, etc.
MSB
MSB-1
.
.
.
MSB – (n–1)
.
.
.
MSB
MSB-1
MSB-2
.
.
.
.
.
.
.
.
.
.
.
AD2S80A
AD2S105
12,14 OR 16-BIT RESOLUTION MODE
n = POLES
Figure 12. A General Consideration in Connecting R/D
Converter and AD2S105 for Multiple Pole Motors
Figure 13 shows the AD2S80A configured for use with a four
pole motor, where n = 2. Using the formula described the MSB
is shifted left once.
AD2S80A
AD2S105
BIT1
BIT2
.
.
.
.
.
.
BIT13
BIT14
MSB
MSB-1
.
.
.
.
.
.
.
LSB
(MSB)
(LSB)
14-BIT RESOLUTION MODE
.
.
.
.
.
.
Figure 13. Connecting of R/D Converter AD2S80A and
AD2S105 for Four-Pole Motor Application
APPLICATION NOTES LIST
1. “Vector Control Using a Single Vector Rotation Semicon-
ductor for Induction and Permanent Magnet Motors,” by
F.P. Flett, Analog Devices.
2. “Silicon Control Algorithms for Brushless Permanent Mag-
net Synchronous Machines,” by F.P. Flett.
3. “Single Chip Vector Rotation Blocks and Induction Motor
Field Oriented Control,” by A.P.M. Van den Bossche and
P.J.M. Coussens.
4. “Three Phase Measurements with Vector Rotation Blocks in
Mains and Motion Control,” P.J.M. Coussens, et al.
5. “A Tutorial in AC Induction and Permanent Magnet
Synchronous Motors–
Vector-Control with Digital Signal
Processors.
”
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