AN1913D Freescale Semiconductor / Motorola, AN1913D Datasheet - Page 50

• Manufacturer Part Number: AN1913D
• Description: 3-phase BLDC Motor Control with Sensorless Back-EMF ADC Zero Crossing Detection using DSP 56F80x
• Manufacturer: Freescale Semiconductor / Motorola

Setting of Software Parameters for Other Motors
10.
Notes: The most important constants for reliable motor start-up are described in
50
.
The software was tuned for three hardware and motor kits (EVM, LV, HV) as described in
and
accordingly.
Most of the parameters are located in the file (External RAM version):
...\dsp5680xevm\nos\applications\bldc_adc_zerocross\bldcadczcdefines.h
and config files:
...\dsp5680xevm\nos\applications\bldc_adc_zerocross\configextram\appconfig.h
or in the file (Flash version):
...\dsp5680xevm\nos\applications\bldc_adc_zerocross\configFlash\appconfig.h
The motor control drive usually needs setting/tuning of the following:
The software selects valid parameters (one of the three parameter sets) based in the identified
hardware. The table below shows the starting string of the software constants used for each hardware
set.
In the following text the EVM, LV, HV are replaced with x. The sections are sorted in recommended
order (when one is tuning/changing parameters).
Low Voltage Evaluation Motor Hardware Set
•
•
Section
Section
Setting of Software Parameters for Other Motors
Dynamic parameters
Current/voltage parameters
(in 16 bit Words)
Program FLASH
Data RAM
High Voltage hardware set
Low Voltage hardware set
Memory
4.1. It can of course be used for other motors, but the software parameters need to be set
10.1.2.
Hardware Set
Figure 9-1. RAM and FLASH Memory Usage for SDK2.2
BLDC control with BEMF Zero Crossing using ADC
Table 10-1. Software Parameters Marking
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Software Parameters Marking
1481+352
14288
Used
EVM_yyy
HV_yyy
LV_yyy
Section 10.2.2
Application without PC
Master, SCI
1145+352
10568
Used
Section 6
and in