Motorola M68HC08 - Manual (Page 126)

User Guide
Designer Reference Manual DRM028 — Rev 0
126 User Guide MOTOROLA
6.5 Tuning for Customer Motor
This section describes how to modify the software parameters for any
BLDC motor and some hardware adaptations. The software parameters
can be evaluated from a PC computer using PC master software, so the
first subsection describes tuning the PC master software project file.
• A follow-up for software customizing to a customer motor is shown
in
Figure 6-7 .
• Before starting the software modification for a customer motor and
application, it is recommended that you check the application and
motor suitability. This is explained in the section
6.2 Application
Suitability Guide .
• The Parameters File Selection must be made according to
Hardware Configuration used.
• If a modified hardware power stage is used, the appropriate
constants in const_cust_x.h file must be set as described in the
section
6.5.3.1 Software Customizing to Power Stage .
• If a low-voltage board with a modification for 42 V is used, the
constants VOLT_HW_MAX and VOLT_MAX_FAULT_V must be
changed.
• If one of the three standard power stages is used, the software
customizing to power stage is not needed.
• For software customizing to customer motor and application, a
setting must be made as explained in:
– 6.5.4 Software Customizing to Motor — Voltage and
Current Settings
– 6.5.4.3 Alignment Current and Current Regulator Setting
– 6.5.5 Software Customizing to Motor — Commutation and
Start-up Control Setting
– 6.5.6 Software Customizing to Motor — Speed Control
Setting
.
Accomplishing the above steps should be sufficient for most
applications. However, in some cases there may be a need for advanced
software customizing (see Figure 6-8.) with changes to motor PWM
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Freescale Semiconductor, Inc.
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