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參數(shù)資料
| 型號： | AD2S100AP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字信號處理外設(shè) |
| 英文描述： | AC Vector Processor |
| 中文描述： | 12-BIT, DSP-COORDINATE TRANSFORM PROCESSOR, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 393K |
| 代理商： | AD2S100AP |
AD2S100
REV. A
–12–
DIGITAL-TO-RESOLVER AND SYNCHRO CONVERSION
The AD2S100 can be configured for use as a 12-bit digital-to-
resolver (DRC) or synchro converter (DSC). DRCs and DSCs
are used to simulate the outputs of a resolver or a synchro. The
simulated outputs are represented by the transforms outlined
below.
Resolver Outputs
Asin
ω
t.cos
φ
Asin
ω
t.sin
φ
Synchro Outputs
Asin
ω
t.sin
φ
Asin
ω
t.
sin (
φ
+ 120
°
)
Asin
ω
t.
sin (
φ
+ 240
°
)
where:
Asin
ω
t =
fixed ac reference
φ
= digital input angle, i.e., shaft position
The waveforms are shown in Figures 18 and 19.
360
°
90
°
R2 TO R4
(REF)
0
°
S3 TO S1
(SIN)
S2 TO S4
(COS)
270
°
180
°
θ
Figure 18. Electrical Representation and Typical Resolver
Signals
360
°
90
°
0
°
S1 TO S2
270
°
180
°
θ
S2 TO S3
S3 TO S1
R1 TO R2
Figure 19. Electrical Representation and Typical Synchro
Signals
Configuring the AD2S100 for DRC and DSC operation is done
by the following.
DRC—Must Select Mode 1
Inputs
PH/IP4
PH/IP1
Outputs
PH/OP1
PH/OP4
Pin 11
Pin 1
Pin 7
Pin 6
AGND
Reference Asin
ω
t
Asin
ω
t Cos
φ
Asin
ω
t Sin
φ
DSC—Must Select Mode 1
Inputs
PH/IP4
PH/IP1
Outputs
PH/OP1
PH/OP2
PH/OP3
NOTES
1. Valid information is only available after the strobe pulse and BUSY go low.
For more information on DRCs see the AD2S65/AD2S66 data sheet.
2. To correct for inverse phasing of the DSC outputs the reference should be
inverted, or the MSB can be inverted.
Pin 11
Pin 17
Pin 7
Pin 9
Pin 8
Reference Asin
ω
t
AGND
–Asin
ω
t Sin
φ
–Asin
ω
t Sin (
φ
+ 120
°
)
–Asin
ω
t Sin (
φ
+ 240
°
)
APPLICATION NOTES LIST
1. “Vector Control Using a Single Vector Rotation Semiconduc-
tor for Induction and Permanent Magnet Motors,” by F. P.
Flett, Analog Devices.
2. “Gamana – DSP Vector Coprocessor for Brushless Motor
Control,” by Analog Devices and Infosys Manufacturing
System.
3. “Silicon Control Algorithms for Brushless Permanent Magnet
Synchronous Machines,” by F. P. Flett.
4. “Single Chip Vector Rotation Blocks and Induction Motor
Field Oriented Control,” by A. P. M. Van den Bossche and
P. J. M. Coussens.
5. “Three Phase Measurements with Vector Rotation Blocks in
Mains and Motion Control,” P. J. M. Coussens, et al.
6. “Digital to Synchro and Resolver Conversion with the AC
Vector Processor AD2S100,” by Dennis Fu.
7. “Experiment with the AD2S100 Evaluation Board,” by
Dennis Fu.
C
P
.
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
44-Lead Plastic Leaded Chip Carrier (P-44A)
0.032 (0.81)
0.026 (0.66)
0.021 (0.53)
0.013 (0.33)
0.056 (1.42)
0.042 (1.07)
0.025 (0.63)
0.015 (0.38)
0.180 (4.57)
0.165 (4.19)
0.63 (16.00)
0.59 (14.99)
0.110 (2.79)
0.085 (2.16)
0.040 (1.01)
0.025 (0.64)
0.050
(1.27)
BSC
0.656 (16.66)
0.695 (17.65)
0.048 (1.21)
0.042 (1.07)
0.048 (1.21)
0.042 (1.07)
40
6
TOP VIEW
39
29
18
17
PIN 1
IDENTIFIER
7
28
0.020
(0.50)
R
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