Section 5. Software Design; Contents; Introduction; Data Flow - Motorola M68HC08 Reference Manual

Designer Reference Manual — Sensorless BLDC Motor Control

5.1 Contents

5.2 Introduction

5.3 Data Flow

DRM028 — Rev 0
MOTOROLA
Freescale Semiconductor, Inc.
5.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
5.3 Data Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
5.4 Main Software Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
5.5 State Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
5.6 Implementation Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
This section describes the design of the software blocks of the drive. The
software will be described in terms of:
• Data Flow
• Main Software Flowchart
• State Diagram
For more information on the control technique used see
Control Technique.
The control algorithm obtains values from the user interface and
sensors, processes them and generates 3-phase PWM signals for motor
control, as can be seen on the data flow analysis shown in
and Figure 5-2.
Software Design
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Section 5. Software Design

Designer Reference Manual
3.3 Used
Figure 5-1
75