Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

ADMC201 Scheda tecnica(PDF) 8 Page - Analog Devices

Il numero della parte ADMC201
Spiegazioni elettronici  Motion Coprocessor
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

ADMC201 Scheda tecnica(HTML) 8 Page - Analog Devices

Back Button ADMC201 Datasheet HTML 4Page - Analog Devices ADMC201 Datasheet HTML 5Page - Analog Devices ADMC201 Datasheet HTML 6Page - Analog Devices ADMC201 Datasheet HTML 7Page - Analog Devices ADMC201 Datasheet HTML 8Page - Analog Devices ADMC201 Datasheet HTML 9Page - Analog Devices ADMC201 Datasheet HTML 10Page - Analog Devices ADMC201 Datasheet HTML 11Page - Analog Devices ADMC201 Datasheet HTML 12Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 15 page
background image
ADMC201
REV. B
–8–
VECTOR TRANSFORMATION BLOCK OVERVIEW
The Vector Transformation Block performs both Park and
Clarke coordinate transformations to control a three-phase
motor (Permanent Magnet Synchronous Motor or Induction
Motor) via independent control of the decoupled rotor torque
and flux currents. The Park & Clarke transformations combine
to convert three-phase stator current signals into two orthogonal
rotor referenced current signals Id and Iq. Id represents the flux
or magnetic field current and Iq represents the torque generat-
ing current. The Id and Iq current signals are used by the
processor’s motor torque control algorithm to calculate the re-
quired direct Vd and quadrature Vq voltage components for the
motor. The forward Park and Clarke transformations are used
to convert the Vd and Vq voltage signals in the rotor reference
frame to three-phase voltage signals (U, V, W) in the stator ref-
erence frame. These are then scaled by the processor and
written to the ADMC201’s PWM registers in order to drive the
inverter. The figures below illustrate the Clarke and Park
Transformations respectively.
Iw
Iu
Iv
Iy
Ix
120
°
120
°
120
°
Three-Phase
Equivalent
Stator Currents
Two-Phase Currents
Figure 7. Reverse Clarke Transformation
Iy
Ix
ρ
Iq
Id
ROTOR
REFERENCE
FRAME AXIS
90
°
Rotating
Stationary
Reference Frame
Reference Frame
Figure 8. Reverse Park Transformation
Vq
Vd
ρ
Vy
Vx
90
°
Stationary
Rotating
Reference Frame
Reference Frame
Figure 9. Forward Park Transformation
Vy
Vx
W
U
V
120
°
120
°
120
°
Equivalent
Three-Phase Stator
Two-Phase Voltage
Voltage
Figure 10. Forward Clarke Transformation
Operating/Using the Vector Transformation Block
After powering up the ADMC201,
RESET must be driven
low for a minimum of two clock cycles to enable vector
transformations.
The vector transformation block can perform either a forward or
reverse transformation.
Reverse Transformation is defined by the following operations:
(a) Clarke: 3-phase current signals to 2-phase current signals
followed by (b) Park: 2-phase current signals cross multiplied by
sin
ρ, cos ρ which effectively measures the current components
with respect to the rotor (stationary) where
ρ is the electrical
angle of the rotor field with respect to the stator windings.
Forward transformation is defined by the following operations:
(a) Park: 2-phase voltage signals cross multiplied by sin
ρ, cos ρ fol-
lowed by (b) Clarke: 2-phase to 3-phase voltage signal conversion.
In order to provide maximum flexibility in the target system, the
ADMC201 operates in an asynchronous manner. This means
that the functional blocks (analog input, reverse transformation,
forward transformation and PWM timers) operate indepen-
dently of each other. The reverse and forward vector
transformation operations cannot occur simultaneously. All
vector transformation registers, except for RHO/RHOP, are
twos complement. RHO/RHOP are unsigned ratios of 360
°.
For example, 45
° would be 45/360 × 212.
Performing a Reverse Transformation
A reverse transformation is initiated by writing to the reverse
rotation angle register RHO and operates on the values in the
PHIP1, PHIP2 and PHIP3 registers. When the reverse trans-
formation is in 2/3 mode, PHIP1 is calculated from PHIP2 and
PHIP3. This is used in systems where only two-phase currents
are measured. The reverse transformation 2/3 mode is set by
clearing Bit 10 in the SYSCTRL register and is the default
mode after
RESET.
In order to perform a reverse transformation, first write to the
PHIP2 and PHIP3 registers, and to the PHIP1 register if not in
2/3 mode. Then initiate the transformation by writing the re-
verse rotation angle to the RHO register.
The reverse rotation will be completed in 37 system clock cycles
after the rotation is initiated. If Bit 6 of the system control reg-
ister is set, then an interrupt will be generated on completion.
When an interrupt occurs, the user must check Bit 1 of the
SYSSTAT register to determine if the vector transformation
block was the source of the interrupt.
During the vector transformation, the vector transformation
registers must not be written to or the vector rotation results will
be invalid.


Codice articolo simile - ADMC201

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Analog Devices
ADMC201 AD-ADMC201_15 Datasheet
589Kb / 15P
   Motion Coprocessor
REV. B
More results

Descrizione simile - ADMC201

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Analog Devices
ADMC200 AD-ADMC200_15 Datasheet
582Kb / 12P
   Motion Coprocessor
REV. B
ADMC201 AD-ADMC201_15 Datasheet
589Kb / 15P
   Motion Coprocessor
REV. B
ADMC200 AD-ADMC200 Datasheet
134Kb / 12P
   Motion Coprocessor
REV. B
logo
Gennum Corporation
GS9021 GENNUM-GS9021 Datasheet
194Kb / 26P
   EDH Coprocessor
logo
Synaptics Incorporated.
CX90412 CONEXANT-CX90412 Datasheet
70Kb / 2P
   Voice Coprocessor
logo
National Semiconductor ...
CS1301 NSC-CS1301 Datasheet
326Kb / 25P
   Media Coprocessor
logo
Intel Corporation
8087 INTEL-8087 Datasheet
1Mb / 22P
   MATH COPROCESSOR
logo
Gennum Corporation
GS9001 GENNUM-GS9001_04 Datasheet
341Kb / 14P
   EDH Coprocessor
logo
Maxwell Technologies
80387DX MAXWELL-80387DX Datasheet
444Kb / 17P
   Math Coprocessor
logo
Gennum Corporation
GS9001 GENNUM-GS9001 Datasheet
211Kb / 14P
   EDH COPROCESSOR
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com