STARC ABL Software Harry Olar Software Engineer System - - PowerPoint PPT Presentation

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Mar 05, 2023 310 likes •465 views

STARC ABL Software Harry Olar Software Engineer System architecture 8 250 KW Inverters 2 PCs 4 Embedded Linux Devices (PowerDNA) GUI (Graphical User Interface ) Controls Motors Controls Relays Saves Data Shows Relay

SLIDE 1

STARC ABL Software

Harry Olar Software Engineer

SLIDE 2

System architecture

8 250 KW Inverters
2 PCs
4 Embedded Linux Devices

(PowerDNA)

SLIDE 3

GUI (Graphical User Interface )

Controls Motors
Controls Relays
Saves Data
Shows Relay Feedback
Displays Data
Runs Flight Profiles
Software written in C#

SLIDE 4

Embedded Linux Boxes

Firmware written in C
One for each wing (Starboard,

Port and Tail)

A Master that talks to all wing

units

Contains the ARINC664 and

CANbus interfaces

Allows access through SSH, SFTP

SLIDE 5

Inverter Setup and Feedback

Rinehart GUI
Allows changing the limits(

speed/torque rate)

Display the raw data

SLIDE 6

Communication

Protocols

UDP,CANBus,ARINC664

Over optical fiber
Redundant for data and

commands

SLIDE 7

CANBus Communication (Controller Area Network )Communication

Used because of the Inverter
CANBus is used mainly by auto

industry

1 Mb/s
Sends Telemetry
Receives commands

SLIDE 8

ARINC 664 Protocol

Used by Airbus 380 ,Boeing 787
Full duplex
Redundant
Deterministic
Virtual links

SLIDE 9

Motor Control

Ability to use flight profiles
(saved as excel files)
Variable command control rate

(normally 50 Hz)

Torque or Speed modes

200 400 600 800 1000 1200 1400 1600 1 1487 2973 4459 5945 7431 8917 10403 11889 13375 14861 16347 17833 19319 20805 22291 23777 25263 26749 28235 29721 31207 32693 34179 35665 37151 38637 40123

Chart Title

SLIDE 10

Data collection

Collect all inverter and motor

telemetry

Collected data is used to verify

the simulation

Saved as Excel csv format
50 samples/second
50

50 100 150 200 250 1 944 1887 2830 3773 4716 5659 6602 7545 8488 9431 10374 11317 12260 13203 14146 15089 16032 16975 17918 18861 19804 20747 21690 22633 23576 24519 25462 26405 27348 28291 29234 30177

dcBusCurrent1

SLIDE 11

Software Unit Testing

RUNNING rinehartTelemetryUpdate_can0xA6_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xA7_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xA8_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xA9_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xAA_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xAB_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xAC_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xAD_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xAE_inverter_unit_test UNIT TEST
RUNNING rinehartTelemetryUpdate_can0xAF_inverter_unit_test UNIT TEST
Software version 115 software major: 1 Software version 115 software minor: 15

ALL TESTS PASSED

Tests run: 41 .It took 0.066000 ms to finish the tests.
[centos@localhost Unit_tests_x86]$
Using MinUnit Framework
The smallest testable part of an

application

Unit testing finds problems early

SLIDE 12

Code Statistics(lines of code)

Firmware
Language files blank comment code
C

28 2192 1673 5885

C/C++ Header 24 262 353 572
make 8 70 0 191
XML 8 1

0 114

YAML 1 0

0 21

Bourne Shell 1 3

3 3

SUM: 70 2528 2029 6786
GUI
Language files blank comment code
XML 25 193 0 25356
C#

63 2716 2738 11204

HTML 1 32 0

1811

MSBuild script 3 0 21

779

SUM: 92 2941 2759 39150

SLIDE 13

Error handling

Communication Errors
Inverter Errors
Timeout Errors

SLIDE 14

Future Work

Add computer control redundancy
Add generator redundancy

SLIDE 15