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Sensor failure detection, isolation, and accommodation using a neural network approach is described. An auto-associative neural network is configured to perform dimensionality reduction on the sensor measurement vector and provide estimated sensor values. The sensor validation scheme is applied in a simulation of the T700 turboshaft engine in closed loop operation. Performance is evaluated based on the ability to detect faults correctly and maintain stable and responsive engine operation. The set of sensor outputs used for engine control forms the network input vector. Analytical redundancy is verified by training networks of successively smaller bottleneck layer sizes. Training data generation and strategy are discussed. The engine maintained stable behavior in the presence of sensor hard failures. With proper selection of fault determination thresholds, stability was maintained in the presence of sensor soft failures.

Sensor failure detection, isolation, and accommodation using a neural network approach is described. An auto-associative neural network is configured to perform dimensionality reduction on the sensor measurement vector and provide estimated sensor values. The sensor validation scheme is applied in a simulation of the T700 turboshaft engine in closed loop operation. Performance is evaluated based on the ability to detect faults correctly and maintain stable and responsive engine operation. The set of sensor outputs used for engine control forms the network input vector. Analytical redundancy is verified by training networks of successively smaller bottleneck layer sizes. Training data generation and strategy are discussed. The engine maintained stable behavior in the presence of sensor hard failures. With proper selection of fault determination thresholds, stability was maintained in the presence of sensor soft failures.

Sensor failure detection, isolation, and accommodation using a neural network approach is described. An autoassociative neural network is configured to perform dimensionality reduction on the sensor measurement vector and provide estimated sensor values. The sensor validation scheme is applied in a simulation of the T700 turboshaft engine in closed loop operation. Performance is evaluated based on the ability to detect faults correctly and maintain stable and responsive engine operation. The set of sensor outputs used for engine control forms the network input vector. Analytical redundancy is verified by training networks of successively smaller bottleneck layer sizes. Training data generation and strategy are discussed. The engine maintained stable behavior in the presence of sensor hard failures. With proper selection of fault determination thresholds, stability was maintained in the presence of sensor soft failures.

Science fiction roman skrevet af Otto Martin Møller i 1895. En ung dansk kemiker ved navn Erik Poulsen gør med afsæt i den nyeste viden om fysik og kemi den epokegørende opdagelse, at være i stand til at forvandle ethvert uædelt metal til guld. Erik, der ikke interesserer sig for penge, men kun for videnskab, tror sig nu i stand til at skabe sig et navn blandt de allerstørste i verdenshistorien. Men ingen af verdens riger og lande, hvis pengesystemer alle er baseret på guldfoden, vil accepterer en offentliggørelse af formlen. En sådan offentliggørelse vil ganske simpelt forårsage et totalt sammenbrud for den globale økonomi. I stedet for berømmelse venter der nu Erik og hans familie en vild flugt fra det ene land til det andet i konstant frygt for magthavernes militær og hemmelige politi. (Summary by Kristoffer Hunsdahl)

Hvad nu om man kunne gøre sit liv om - eller i det mindste bare gennemleve sin ungdom en gang til? Måske kræver dette hverken mirakler, opstandelse eller genfødsel, men blot at man beslutter at gøre det - at man beslutter sig for at gå tilbage til hvor den svundne tid to sin begyndelse og starter forfra. Det er i hvert fald hvad romanens hovedperson Niels Faber sætter sig for. <br><br>Millionærens Pilegrimsfærd er en roman, der til trods for at den blev skrevet for mere end hundrede år siden, stadig er aktuel for ethvert menneske som på et tidspunkt i tilværelsen har skuet tilbage og tænkt den tanke at livet kunne have formet sig anderledes. <br><br>Romanen er forfatterens sidste. Otto M. Møller døde i en alder af otteogtredive år. Forfatteren skrev den mens han var døende og han havde formentlig en forudanelse af hvad der ventede ham. Måske derfor rummer dele af fortællingen nogen bitterhed. Romanen rummer dog også en hyldest til verdens skønhed, den dejlige natur og til det ærlige jævne menneske. <br><br>I dag, i det enogtyvende århundrede, kan vi derudover glæde os over at bogen giver et sjældent godt øjebliksbillede af det almindelige menneskes hverdagsliv i Danmark omkring 1890'erne. (Summary by Kristoffer Hunsdahl)