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Capabilities of an Argon Fluoride 193 nm Excimer Laser for Laser Ablation Inductively Coupled Plasma Mass Spectometry Microanalysis of Geological Materials
(1997)Journal of Analytical Atomic SpectrometryConference Paper -
Capturing nonlinearities with perturbation models
(1997)IFAC Proceedings Volumes ~ IFAC Symposium on System Identification (SYSID'97)This paper investigates the use of robust control perturbation models for describing nonlinear systems. We use model validation techniques to find the smallest linear dynamic perturbation required to describe a particular behaviour of a nonlinear system. The Moore-Greitzer model of rotating stall in jet engines is used as a detailed example.Conference Paper -
Control-oriented model validation
(1997)IFAC Proceedings Volumes ~ IFAC Symposium on System Identification (SYSID'97)Model validation is a means of assessing model quality with respect to experimental data. In a robust control context this amounts to determining whether or not a perturbation model is consistent with observed data. T his paper offers a survey of recent results on model validation for H-infinity compatible perturbation models. Several model paradigms and experiment frameworks are considered. The first is a frequency-domain setting for ...Conference Paper -
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A NEXAFS Study on the Coordination Geometry of Aluminum in Minerals and Y Zeolite. Cornparison of Experiment and Theory
(1997)Journal de Physique IVConference Paper -
Closed-Loop Aeromaneuvering for a Mars Precision Landing
(1997)NASA University Research Centers Technical Advances in Education, Aeronautics, Space, Autonomy, Earth and EnvironmentControlled aeromaneuvering is considered as a means of achieving a precisely targeted landing on Mars. This paper presents a preliminary study of the control issues. The candidate vehicle is the existing Mars Pathfinder augmented with roll thrusters and a center of mass offset actuator. These allow control of both bank angle and lift force, giving the ability to control the range and cross-track during the aeromaneuvering entry. A preliminary ...Conference Paper -
Cascadable all-optical space switch with high and balanced extinction ratios
(1997)Proceedings of the 2nd Optoelectronics and Communications ConferenceConference Paper -
BUILD-IT: a Computer Vision-based Interaction Technique for a Planning Tool
(1997)Advances in Human Factors/Ergonomics ~ HCI International 1997 - Proceedings of the Seventh International Conference on Human-Computer Interaction - Volume 1Conference Paper -
Erdbebensicherung bestehender Bauwerke nach verschiedenen Normen
(1997)SIA DokumentationConference Paper