Výsledky vyhledávání - "Rachael A. Bis"

A Generic Modeling Process to Support Functional Fault Model Development

Autor: Rachael A. Bis, Joseph A. Hemminger, William A. Maul, Rebecca Oostdyk

Publikováno v: AIAA Infotech @ Aerospace.

Functional fault models (FFMs) are qualitative representations of a system's failure space that are used to provide a diagnostic of the modeled system. An FFM simulates the failure effect propagation paths within a system between failure modes and ob

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94e5c6ab34501bed667f5f05b6a781e3
https://doi.org/10.2514/6.2016-2134

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Verification of Functional Fault Models and the Use of Resource Efficient Verification Tools

Autor: Rachael A. Bis, William A. Maul

Publikováno v: AIAA Infotech @ Aerospace.

Functional fault models (FFMs) are a directed graph representation of the failure effect propagation paths within a system's physical architecture and are used to support development and real-time diagnostics of complex systems. Verification of these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7584742ae04c190e7a4f859e55fa9b2a
https://doi.org/10.2514/6.2015-1796

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Velocity Occupancy Space for Unmanned Ground Vehicles With Actuation Error

Autor: Rachael A. Bis, Huei Peng, A. Galip Ulsoy

Publikováno v: Volume 1: Adaptive Control; Advanced Vehicle Propulsion Systems; Aerospace Systems; Autonomous Systems; Battery Modeling; Biochemical Systems; Control Over Networks; Control Systems Design; Cooperativ.

The velocity occupancy space (VOS) algorithm was developed to allow an unmanned ground vehicle (UGV) to avoid moving and stationary obstacles and navigate efficiently to a goal using only uncertain sensor data. The original VOS concept was designed f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f33ff2e138419be52cc2ea3bc4180e4c
https://doi.org/10.1115/dscc2012-movic2012-8544

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Velocity Occupancy Space for Differential Drive Vehicles

Autor: A. Galip Ulsoy, Huei Peng, Rachael A. Bis

Publikováno v: ASME 2010 Dynamic Systems and Control Conference, Volume 1.

Velocity occupancy space (VOS) was developed to allow a vehicle to avoid moving and stationary obstacles and navigate efficiently to a goal using only uncertain sensor data. However, the VOS concept was designed for a holonomic vehicle capable of ins

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32e3095b68d7dc7ae3b1ac8f0e642720
https://doi.org/10.1115/dscc2010-4188

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Velocity Occupancy Space: Robot Navigation and Moving Obstacle Avoidance With Sensor Uncertainty

Autor: Galip Ulsoy, Rachael A. Bis, Huei Peng

Publikováno v: ASME 2009 Dynamic Systems and Control Conference, Volume 1.

In order to autonomously navigate in an unknown environment, a robotic vehicle must be able to sense obstacles, determine their velocities, and follow a clear path to a goal. However, the perceived location and motion of the obstacles will be uncerta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cd9faf391f623eb621120199731c329
https://doi.org/10.1115/dscc2009-2570

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Effect of nitrogen gas on the lifetime of carbon nanotube field emitters for electron-impact ionization mass spectrometry

Autor: Rachael A. Bis, Stacy E. Snyder, Emily W. Gehrels, Paul R. Mahaffy, Kristina Ramirez, Todd King, Patrick A. Roman, Stephanie Getty

Publikováno v: SPIE Proceedings.

The lifetime of a patterned carbon nanotube film is evaluated for use as the cold cathode field emission ionization source of a miniaturized mass spectrometer. Emitted current is measured as a function of time for varying partial pressures of nitroge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c081bcffa86062385e5d61a29f15fc7
https://doi.org/10.1117/12.776914

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Performance of a carbon nanotube field emission electron gun

Autor: Paul R. Mahaffy, Patrick A. Roman, Todd King, Hollis H. Jones, Federico A. Herrero, Rachael A. Bis, Stephanie Getty, Bernard A. Lynch

Publikováno v: SPIE Proceedings.

A cold cathode field emission electron gun (e-gun) based on a patterned carbon nanotube (CNT) film has been fabricated for use in a miniaturized reflectron time-of-flight mass spectrometer (RTOF MS), with future applications in other charged particle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee1f4ec65cfe89e76ee62240afb4980d
https://doi.org/10.1117/12.720995

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Vehicle occupancy space for unmanned ground vehicles with actuation error

Autor: Huei Peng, A. Galip Ulsoy, Rachael A. Bis

Publikováno v: International Journal of Vehicle Autonomous Systems. 12:180

The Velocity Occupancy Space (VOS) algorithm was developed to allow an Unmanned Ground Vehicle (UGV) to avoid moving and stationary obstacles and navigate efficiently to a goal using only uncertain sensor data. The original VOS concept was designed f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5017b4961ce741e80b7b1f0a585512db
https://doi.org/10.1504/ijvas.2014.060115

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Velocity occupancy space: autonomous navigation in an uncertain, dynamic environment

Autor: Huei Peng, Rachael A. Bis, A. Galip Ulsoy

Publikováno v: International Journal of Vehicle Autonomous Systems. 10:41

In order to autonomously navigate in an unknown environment, a robotic vehicle must be able to sense obstacles, determine their velocities, and select a collision-free path that will lead quickly to a goal. However, the perceived location and motion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9039047647ae04419be0c52b0dfe76cc
https://doi.org/10.1504/ijvas.2012.047697

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