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Demo and Conclusions
More Robust Implementation
Books and Papers
Optimal Algorithms for Exact, Inexact and Approval Voting - Behrooz Parhami
A Novel Hybrid Voter Using Genetic Algorithm
-Tarang Agarwal
-Akhilesh Pathak
-Anand Mohan
Digital Avionics Systems - Cary R. Spitzer
C++ Works
Cables Break
10 KB foot print is impressive
Trade offs for Fault Tolerant Architectures
Launching 1 pound of equipment to low earth orbit costs ~$5000 dollars
Example of Spiral Development, iterate and test often
App Development
Voter Algorithm
Voter implements inexact voting measuring the distance between pairs to identify convergence within a threshold
Candidates (3 Arduinos)
SYNC
User Input
Actuator
Voter
Candidates
MUX
Voter (1 Arduino)
Communication Bus
200/50Hz frames
0 1 2 3 0
Candidate 1
Candidate 2
Candidate 3
Voter Input
Fault Tolerance Strategies depend on the mission, environment and vehicle at hand
Flight time in hours. Can provide maintenance at airport base. Pilot can eject
Mission duration/weeks/months need to be self sufficient
A none fault tolerant architecture
TMR Architecture
Would you fly in a plane which didn't have flight tolerance?
Lets go over a failure modes and effect analysis
N7 Team Introduction
Jose Ortiz - Guidance and Navigation Software Engineer
X-15 Flight 3-65-97 an electrical disturbance caused the degradation of flight controls
Heimdall Ruiz-Applications /SYS/SW Analyst
Safety-critical systems are systems whose failure may cause death or injury to
people, harm to the environment, or have huge economical loss
Project Goal
Learn more about fault tolerant architectures by rapid prototyping one