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In order to develop an Automatic Pesticide Detection System an electronic nose based on an array of commercial gas sensors has been realized. The sensors works in parallel and a qualitative response to different pesticides has been found through the use of a self-made measurement bench.
This paper examines the obsolescence of the “Reliability Prediction of Electronic Equipment” handbook (MIL-HDBK-217) under both technical and operative points of view, evaluating its strengths and its weaknesses. Practically the handbook is no more applicable, so it is necessary to trace the philosophy for a new method that overcomes the '217 problems: new scenarios for the reliability calculation...
This paper deals with the idea of developing new philosophies for the reliability assessment of additive layer manufacturing (ALM) parts. ALM is a disruptive new manufacturing method by which components are created adding material layer after layer, allowing for the design and production of complex geometries, unthinkable with the use of traditional subtractive machining methods. Thinking ALM means...
This paper deals with the reliability assessment for an UAV (Unmanned Aerial Vehicle) system: once a specific architecture is selected (after a trade-off phase), the reliability assessment represents a key issue to optimize the design of any complex system. The final aim is to evaluate the intrinsic reliability at the design stage to avoid any critical failure that may leads to a catastrophic effect...
The paper shows the strategies of choice of recovery methods of the RAM when, in space environment, they are affected by various SEE phenomena. The article considers various recovery methodologies, including two scrubbing methods (deterministic and probabilistic) and the criteria of choice according to the kind of mission in which the component is involved.
Because of integrating measurements, the Inertial Navigation System (INS) for UAVs or small planes has the great drawback to increase the uncertainty for those entities, as acceleration and angular velocity that are function of time. For this reason, it generally employs GPS in order to correct and calibrate itself. When GPS is not available, typically in environments such as urban canyons or indoor...
The advent of new sensors allows to create smaller and lighter inertial systems than ever before: thanks to their compact size, low cost and low power consumption, they can be installed on flying platforms such as UAV systems, to improve the reliability of autonomous navigation. The merging of the Inertial Reference System (IRS) and GNSS data through the Kalman filter gives a significantly improve...
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