Dynamometer Drive System
Warning
The AD-FMCMOTCON1-EBZ is a legacy product and is no longer actively supported. This documentation is provided for reference only.
Features
Two BLDC motors connected in a dyno setup (BLY171S-24V-4000 and BLY171D-24V-4000)
Electronically adjustable load - the load value is set using the onboard buttons and LCD
Programmable step and ramp load changes
Measurement and display of load motor phase currents
Measurement and display of load motor speed
External control using Analog Discovery
Block Diagram
Key Parts
User Guide
The system is equipped with an LCD which displays information about the state of the load. Together with the three push buttons placed below it, the LCD can be used to display and configure different system parameters. The +/− buttons navigate through the menu and change parameter values, while the Enter button confirms changes or enters / exits menu screens.
Menu screen |
Description |
|---|---|
Main menu |
Displayed at power up. |
Measurement menu |
Displays RMS phase currents and motor speed. The load can be adjusted by pressing the “+” or “−” buttons. Press “Enter” to go back to the main menu. |
Waveforms menu |
Select ramp or step load. Select “…” and press “Enter” to go back. |
Step load menu |
Select “Step” to start toggling the load. Press “+” or “−” to toggle between preset step values. Press “Enter” to go back. |
Maximum duty cycle |
Set maximum duty cycle. Press “Enter” to go back. |
Minimum duty cycle |
Set minimum duty cycle. Press “Enter” to go back. |
Ramp load menu |
Press “+” or “−” to change ramp period. Press “Enter” to go back. |
Settings menu |
Select “…” and press “Enter” to go back. |
Duty cycle step |
Change duty cycle step. |
About |
System information. |
Analog Discovery™
To interface the Dyno with the Analog Discovery™ USB Oscilloscope:
Slide switch S2 to the EXT_CTRL position.
Insert the Analog Discovery™ into connector P1 with the Analog Devices logo facing the user.
The signals available to the Analog Discovery™ are:
Dyno Signal |
Analog Discovery Channel |
Description |
|---|---|---|
I_A |
Scope Channel 1 Positive |
Phase A motor current (185 mV/A) |
I_B |
Scope Channel 2 Positive |
Phase B motor current (185 mV/A) |
PWM1 |
Digital Channel 0 |
Phase A PWM (3.3 V levels) |
PWM2 |
Digital Channel 2 |
Phase B PWM (3.3 V levels) |
PWM3 |
Digital Channel 2 |
Phase C PWM (3.3 V levels) |
Warning
The system requires a 5 V, 500 mA power supply. The power connector is a 2.1 x 5.5 mm jack with the center pin positive (+).
Test Procedure
Required hardware
ZedBoard with mouse and keyboard
SD card with ADI Linux image
HDMI monitor
AD-FMCMOTCON1-EBZ
AD-DYNO1-EBZ
Running the test
Connect the hardware.
In the Linux IIO Scope go to the Motor Control tab and select the following configuration:
Delta: ON
Direction: Clockwise
Sensors: hall
Controller type: Manual PWM
PWM: 90.96%
Set Run to ON.
Make sure that there are no vibrations in the DYNO system.
On the DYNO board open the Measurements menu.
Check the speed & current on the DYNO LCD: should read 5300 rpm ± 250 rpm for speed and 0.3 A for current (no load).
Set the load to 100%.
Check the speed & current: should read 3900 rpm ± 250 rpm and 1.5 A ± 0.1 A.
