U S E R M A N U A L
Jan 26, 2015, AN709-00011-1v0-E
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4. System Firmware Design
This chapter introduces the FW structure of the inverter servo motor project
4.1
FW Feature
The features of the servo motor speed control solution are shown in Table 4-1.
Table 4-1: Feature List of servo motor speed control
No
Feature
Description
Remark
1.
Encoder Zero-Check
Match encoder zero signal with electrical position
2.
Hardware Self -check
Check offset of current sampling
3.
Adjustable Carrier
Frequency
Carrier frequency can be set by the corresponding variable in
user interface
4.
Rapid speed
acceleration
Motor can be accelerated from 0rpm to 5000rpm within 200ms
5.
Rapid speed
deceleration
Motor can be decelerated from 5000rpm to 0rpm within
200ms
6.
FOC Control
Using FOC control algorithm
7.
Speed regulate
This function is used to speed up or slow down a motor by the
command from host via UART or debugger
8.
Speed precision
Accurate speed controlling with less than 1% target error.
9.
Brake
Stop motor by brake down
Slow down a motor by brake
10.
Current sample
Three-phase hall-sensor for current sampling
11.
Protect
DC voltage protect
A/D offset protect
Lock rotor protect
Over Current Protect
12.
Bi-
directional rotating
Motor can run in both directions.
4.2
FW Structure
There are 5 layers in the FW structure of IAR, which are shown in Figure 4-1.
