Nowadays many developments are in progress with Unmanned Aerial Vehicles (UAVs), which are used in a growing number of civil applications. Their most common tasks are reconnaissance and remote sensing, but payload transport is also sought after.
For these vehicles to be able to used in civilian flight, their reliability must approach the reliability of the traditional airplanes controlled by pilots. This is the aim of one of the projects in MTA SZTAKI, in which we want to develop a highly reliable autonomous UAV. In my thesis I will design the avionic architecture of this airplane which guarantees its fault tolerant operation.
The concept of the system is already made, this includes a single redundant design which can tolerate any single failure by using built-in self tests and analytic redundancy. Hardware redundancy will be used at the central control units, the sensor modules, the communication network and the power supply, while analytic redundancy and reconfiguration of the control laws will handle the faults of the actuators. The communication network will be the highly reliable FlexRay network, used in the automotive industry.