AN1917D Freescale Semiconductor / Motorola, AN1917D Datasheet
AN1917D
Manufacturer Part Number
AN1917D
Description
3-Phase PM Synchronous Motor Control with Quadrature Encoder Using DSP56F80x
Manufacturer
Freescale Semiconductor / Motorola
Datasheet
1.AN1917D.pdf
(24 pages)
© Motorola, Inc., 2002. All rights reserved.
3-Phase PM Synchronous
Motor Control with
Quadrature Encoder Using
DSP56F80x
Design of a Motor Control Application Based
on Motorola Software Development Kit
Pavel Grasblum
1.
This Application Note describes the design of a 3-phase PM
(Permanent Magnet) Synchronous motor drive based on
Motorola’s DSP56F80x dedicated motor control device. The
software design takes advantage of the SDK (Software
Development Kit) developed by Motorola.
PM Synchronous motors are very popular in a wide range of
applications. Compared with DC motors, PM Synchronous
motors are without a commutator, so they are more reliable
than DC motors. Also, in comparison to AC induction
motors, PM Synchronous motors have advantages. PM
Synchronous motors generate the rotor magnetic flux with
rotor magnets so that PM Synchronous motors are highly
efficient. Therefore, PM Synchronous motors are used in
high-end white goods (refrigerators, washing machines,
dishwashers, etc.), high-end pumps, fans and in other
appliances, which require high reliability and efficiency.
The concept of this application is a speed-closed loop PM
Synchronous drive using a Quadrature Encoder. It serves as
an example of a PM Synchronous motor control system
design using a Motorola DSP with SDK support. It also
illustrates the usage of dedicated motor control libraries that
are included in the SDK.
This Application Note includes the basic motor theory,
system design concept, hardware implementation and
software design, including the PC master software
visualization tool.
Introduction of Application
Benefit
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
1.
2.
3.
4.
5.
6.
7.
8.
9.
3.1 Digital Control of a PM Synchronous
4.1 System Outline ..............................10
4.2 Application Description ................11
4.3 Hardware Implementation.............12
5.1 Data Flow ......................................14
5.2 Software Implementation ..............15
6.1 Scaling of Quantities .....................18
6.2 Motor Constant Calculation ..........19
7.1 Drivers and Library Functions ......21
7.2 Appconfig.h File ...........................21
7.3 Initialization of Drivers .................21
7.4 Interrupts .......................................22
7.5 PC Master Software ......................22
Benefit........................................1
Features......................................2
Motor ...............................................5
Introduction of Application
Motorola DSP Advantages and
Target Motor Theory .................4
System Concept.......................10
Software Design ......................14
Implementation Notes .............18
SDK Implementation...............21
DSP Usage...............................23
References ...............................24
Contents
(Motorola Order Number)
Order by AN1917/D
Rev. 0, 9/02
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