The monitoring of processes by means of sensor measurements is the subject of increased developme... more The monitoring of processes by means of sensor measurements is the subject of increased development. This paper presents a technique for generating state space model from strictly empirical process observations. Piecewise connected cubic splines are applied to describe the sensor output and provide a uniform basis for the formulation of a state model.
La presente invention concerne un echangeur de chaleur presentant une conception de collecteur mo... more La presente invention concerne un echangeur de chaleur presentant une conception de collecteur modifiee permettant d'absorber de hautes charges thermiques. L'echangeur de chaleur comprend un logement presentant un espace interieur, un element central a l'interieur de l'espace interieur du logement, l'element central comprenant une pluralite de passages d'ecoulement, et un collecteur positionne a une extremite du logement et en communication avec l'element central, le collecteur comprenant une formation d'absorption thermique. La formation d'absorption thermique peut prendre la forme d'une nervure en relief continue autour d'une circonference interne du collecteur. La nervure en relief absorbe l'exces de chaleur et reduit la tension thermique sur l'echangeur de chaleur.
L'invention concerne un systeme de frein moteur comprenant une vanne papillon situee dans le ... more L'invention concerne un systeme de frein moteur comprenant une vanne papillon situee dans le systeme d'echappement en amont d'un turbocompresseur a admission partielle du moteur. Un passage de derivation de gaz d'echappement est utilise pour fournir du gaz d'echappement a la turbine lorsque la vanne papillon est en position fermee. En utilisant une vanne papillon a contre-pression situee en amont du turbocompresseur, la vanne peut etre fermee entierement pour generer de hauts niveaux de contre-pression. En utilisant l'alimentation en gaz d'echappement par derivation externe vers le carter de turbine, ladite turbine continue a tourner et le debit massique vers le moteur n'est pas etrangle, ce qui se traduit par des performances de freinage ameliorees.
L'invention concerne un systeme de freinage moteur comprenant des soupapes de contre-pression... more L'invention concerne un systeme de freinage moteur comprenant des soupapes de contre-pression situees dans le systeme d'echappement en amont d'un turbocompresseur de moteur. Les soupapes peuvent etre des soupapes a volet reglables en biseau ou en D situees dans chaque passage d'un collecteur de gaz d'echappement divise. L'utilisation de soupapes de contre-pression situees en amont du turbocompresseur permet de fermer les soupapes reglables par variation des degres afin de generer des niveaux de contre-pression desires tout en permettant aux gaz d'echappement de traverser des zones ouvertes du passage d'ecoulement partiellement ferme pour atteindre le turbocompresseur du moteur. Lorsqu'on ne ferme pas completement la soupape et qu'on ne limite pas totalement l'ecoulement de gaz d'echappement vers la turbine, ladite turbine continue a tourner, le debit massique moteur n'est pas bloque, et il en resulte une performance de freinage ame...
CA t 4 ORS) LUI C. CATTANI, PAUL J. EAGLE, ZBIJ LIN AND XIN LIU, IiIIVRSITY or DETROIT 1'HIcy 7. ... more CA t 4 ORS) LUI C. CATTANI, PAUL J. EAGLE, ZBIJ LIN AND XIN LIU, IiIIVRSITY or DETROIT 1'HIcy 7. PBURMNG ORGANIZATIN NAME(S) ANPOR NUMBESRES 6.x RGNATI"f UNIIVERSITY (W DETRIT ?1ECY MEX314NCAL ENGINERIN DEPARIMBOW ARDEC-F-92 P. o. BOX 1L9900 DETROIT, MI 48219 t SPNSOING1ACNTOWG AE14Y RT71,) AD C3AESIS)10.SPONSORINGi MONITORING. FONORRO~ ONIG AEN IAM\SJANDA~3ES ES)AOCINty REPORT NUMOIER ARDEC MICR-FSP-RC, B95 PICATfltIY ARSENAL WI 07806-5000 fl. 5UPLEMENTARY NOTES PREPARED LUNDE THE DIREMCNlt OF DR. FRANK p. KEEL, TEEMNCAL pIIU1TOR FCR THE ABOVE REFEENZ CONTRACT 120. G,ý;fiVON AVAIR VtJTT STATEMENT 12b. WSESBUUII ZO0E APPROVED FORI PUBLIC RELEASE DIS ¶UU12GIIS UNLIMITED Regression modelling of trajectory measurement data was examined as a means for improving the performance of aircraft trajectory tracking and prediction. Regression models were used for adaptively removing measurement noise from trajectory *observations and extrapolating trajectory measurements. A comparative study was done between three models of aircraft dynamics used in an extended Kalman filter: a strictly translational model, an attitude/translation model, and an attitude/translation model that uses vehicle specific; inertial characteristics. Adaptive regression models were used for *measurement accuracy enhancement. Comparisons were also made between errors resulting from position and attitude predictions using Runge-Kutta integration and extrapolated regression models. it. 5JJICT TERMS 15 NUMBER Of PAGES TRACI7NG, TRAJECMW~, KALMAN FILM~, ESTIHMAICH RECRESSICN, s0 1.PRICE CODE '7. SICURTY CI55V1040 I6 SICURITY '"ASiiFIA710ON 19. SECURITY UASSIF17EA !ON 2.LMTTOf~5TC OP REPORT OF 71414 PAtC' Of ABSTRACT uKLSSIIED 7sm&IFED LucLASSIFIED sA NbN 1"DI 'm 230 '.U
This report the results of research conducted for the Defense Logistics Agency (DLA) in the devel... more This report the results of research conducted for the Defense Logistics Agency (DLA) in the development of a technology for modernizing depot handling of fasteners. The proposed technology would aid in performing a limited technical inspection of the geometric and metllurgical qualities of fasteners as they are received from manufacturers of distributions. The technology would validate received material (providing technical data to assure that the receuved material corresponds to the contract that was issued) and help identify stock (providing a National Stock Number for material that is received with improper or absent documentation). 14. SUIECT TERMS 15 NUMBER Oi PAGES FASTENERS, DEPOTS, NON-DESTRUCTIVE EVALUATION, 53 COUNTERFEIT FASTENERS, SENSORS *7. $CUWT CASSICATION I. SlCUIITY ,LASSIFICA,1ON 19. SECU'ITY UAWFIuIATlON 20. UM1TATION OQ AISTRACT OP REPORT OF 341 *AEC Of ASSTRACT UNCLASSIFIED UNCLASSIFIED UNCLASSIFIED UL L 4U Y99~'~.Iv C 8 2.3.1.1 Non-Conforming Parts in the Defense Inventory 8 2.3.1.2 Problems in Procurement 9 2.3.2 Background on the Fastener Quality Act 2.
The present technology provides one or more methods of operating an engine in a motor vehicle. In... more The present technology provides one or more methods of operating an engine in a motor vehicle. In at least one embodiment, the existence of an engine idle condition is determined. The method may also include determining whether an operator is present in the vehicle. In some embodiments, the engine operates at a performance idle speed when an engine idle condition exists and an operator is present in the vehicle. In further embodiments, the engine operates at a fuel economy idle speed when an idle condition exists and no operator is present in the vehicle. In still further embodiments, the fuel economy idle speed will be lower than the performance idle speed. The present technology anticipates engine workload and controls engine idle speeds. Based on the anticipated workloads, the present technology can reduce engine stalling while also reducing emissions and increasing fuel economy.
The monitoring of processes by means of sensor measurements is the subject of increased developme... more The monitoring of processes by means of sensor measurements is the subject of increased development. This paper presents a technique for generating state space model from strictly empirical process observations. Piecewise connected cubic splines are applied to describe the sensor output and provide a uniform basis for the formulation of a state model.
La presente invention concerne un echangeur de chaleur presentant une conception de collecteur mo... more La presente invention concerne un echangeur de chaleur presentant une conception de collecteur modifiee permettant d'absorber de hautes charges thermiques. L'echangeur de chaleur comprend un logement presentant un espace interieur, un element central a l'interieur de l'espace interieur du logement, l'element central comprenant une pluralite de passages d'ecoulement, et un collecteur positionne a une extremite du logement et en communication avec l'element central, le collecteur comprenant une formation d'absorption thermique. La formation d'absorption thermique peut prendre la forme d'une nervure en relief continue autour d'une circonference interne du collecteur. La nervure en relief absorbe l'exces de chaleur et reduit la tension thermique sur l'echangeur de chaleur.
L'invention concerne un systeme de frein moteur comprenant une vanne papillon situee dans le ... more L'invention concerne un systeme de frein moteur comprenant une vanne papillon situee dans le systeme d'echappement en amont d'un turbocompresseur a admission partielle du moteur. Un passage de derivation de gaz d'echappement est utilise pour fournir du gaz d'echappement a la turbine lorsque la vanne papillon est en position fermee. En utilisant une vanne papillon a contre-pression situee en amont du turbocompresseur, la vanne peut etre fermee entierement pour generer de hauts niveaux de contre-pression. En utilisant l'alimentation en gaz d'echappement par derivation externe vers le carter de turbine, ladite turbine continue a tourner et le debit massique vers le moteur n'est pas etrangle, ce qui se traduit par des performances de freinage ameliorees.
L'invention concerne un systeme de freinage moteur comprenant des soupapes de contre-pression... more L'invention concerne un systeme de freinage moteur comprenant des soupapes de contre-pression situees dans le systeme d'echappement en amont d'un turbocompresseur de moteur. Les soupapes peuvent etre des soupapes a volet reglables en biseau ou en D situees dans chaque passage d'un collecteur de gaz d'echappement divise. L'utilisation de soupapes de contre-pression situees en amont du turbocompresseur permet de fermer les soupapes reglables par variation des degres afin de generer des niveaux de contre-pression desires tout en permettant aux gaz d'echappement de traverser des zones ouvertes du passage d'ecoulement partiellement ferme pour atteindre le turbocompresseur du moteur. Lorsqu'on ne ferme pas completement la soupape et qu'on ne limite pas totalement l'ecoulement de gaz d'echappement vers la turbine, ladite turbine continue a tourner, le debit massique moteur n'est pas bloque, et il en resulte une performance de freinage ame...
CA t 4 ORS) LUI C. CATTANI, PAUL J. EAGLE, ZBIJ LIN AND XIN LIU, IiIIVRSITY or DETROIT 1'HIcy 7. ... more CA t 4 ORS) LUI C. CATTANI, PAUL J. EAGLE, ZBIJ LIN AND XIN LIU, IiIIVRSITY or DETROIT 1'HIcy 7. PBURMNG ORGANIZATIN NAME(S) ANPOR NUMBESRES 6.x RGNATI"f UNIIVERSITY (W DETRIT ?1ECY MEX314NCAL ENGINERIN DEPARIMBOW ARDEC-F-92 P. o. BOX 1L9900 DETROIT, MI 48219 t SPNSOING1ACNTOWG AE14Y RT71,) AD C3AESIS)10.SPONSORINGi MONITORING. FONORRO~ ONIG AEN IAM\SJANDA~3ES ES)AOCINty REPORT NUMOIER ARDEC MICR-FSP-RC, B95 PICATfltIY ARSENAL WI 07806-5000 fl. 5UPLEMENTARY NOTES PREPARED LUNDE THE DIREMCNlt OF DR. FRANK p. KEEL, TEEMNCAL pIIU1TOR FCR THE ABOVE REFEENZ CONTRACT 120. G,ý;fiVON AVAIR VtJTT STATEMENT 12b. WSESBUUII ZO0E APPROVED FORI PUBLIC RELEASE DIS ¶UU12GIIS UNLIMITED Regression modelling of trajectory measurement data was examined as a means for improving the performance of aircraft trajectory tracking and prediction. Regression models were used for adaptively removing measurement noise from trajectory *observations and extrapolating trajectory measurements. A comparative study was done between three models of aircraft dynamics used in an extended Kalman filter: a strictly translational model, an attitude/translation model, and an attitude/translation model that uses vehicle specific; inertial characteristics. Adaptive regression models were used for *measurement accuracy enhancement. Comparisons were also made between errors resulting from position and attitude predictions using Runge-Kutta integration and extrapolated regression models. it. 5JJICT TERMS 15 NUMBER Of PAGES TRACI7NG, TRAJECMW~, KALMAN FILM~, ESTIHMAICH RECRESSICN, s0 1.PRICE CODE '7. SICURTY CI55V1040 I6 SICURITY '"ASiiFIA710ON 19. SECURITY UASSIF17EA !ON 2.LMTTOf~5TC OP REPORT OF 71414 PAtC' Of ABSTRACT uKLSSIIED 7sm&IFED LucLASSIFIED sA NbN 1"DI 'm 230 '.U
This report the results of research conducted for the Defense Logistics Agency (DLA) in the devel... more This report the results of research conducted for the Defense Logistics Agency (DLA) in the development of a technology for modernizing depot handling of fasteners. The proposed technology would aid in performing a limited technical inspection of the geometric and metllurgical qualities of fasteners as they are received from manufacturers of distributions. The technology would validate received material (providing technical data to assure that the receuved material corresponds to the contract that was issued) and help identify stock (providing a National Stock Number for material that is received with improper or absent documentation). 14. SUIECT TERMS 15 NUMBER Oi PAGES FASTENERS, DEPOTS, NON-DESTRUCTIVE EVALUATION, 53 COUNTERFEIT FASTENERS, SENSORS *7. $CUWT CASSICATION I. SlCUIITY ,LASSIFICA,1ON 19. SECU'ITY UAWFIuIATlON 20. UM1TATION OQ AISTRACT OP REPORT OF 341 *AEC Of ASSTRACT UNCLASSIFIED UNCLASSIFIED UNCLASSIFIED UL L 4U Y99~'~.Iv C 8 2.3.1.1 Non-Conforming Parts in the Defense Inventory 8 2.3.1.2 Problems in Procurement 9 2.3.2 Background on the Fastener Quality Act 2.
The present technology provides one or more methods of operating an engine in a motor vehicle. In... more The present technology provides one or more methods of operating an engine in a motor vehicle. In at least one embodiment, the existence of an engine idle condition is determined. The method may also include determining whether an operator is present in the vehicle. In some embodiments, the engine operates at a performance idle speed when an engine idle condition exists and an operator is present in the vehicle. In further embodiments, the engine operates at a fuel economy idle speed when an idle condition exists and no operator is present in the vehicle. In still further embodiments, the fuel economy idle speed will be lower than the performance idle speed. The present technology anticipates engine workload and controls engine idle speeds. Based on the anticipated workloads, the present technology can reduce engine stalling while also reducing emissions and increasing fuel economy.
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Papers by Luis Cattani