Dr. Gregory S. Agnes Profile

Dr. Gregory S. Agnes

Senior Engineer at Jet Propulsion Lab

SPIE Involvement:

Conference Program Committee | Conference Chair | Author

Publications (17)

PROCEEDINGS ARTICLE | October 7, 2013

Multiphysics modeling and uncertainty quantification for an active composite reflector

Proc. SPIE. 8840, Optical Modeling and Performance Predictions VI

KEYWORDS: Actuators, Mechanics, Error analysis, Composites, Wavefronts, Control systems, Computer simulations, Space operations, Tolerancing, Performance modeling

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PROCEEDINGS ARTICLE | September 24, 2004

The DART cylindrical infrared 1-meter membrane reflector

Proc. SPIE. 5494, Optical Fabrication, Metrology, and Material Advancements for Telescopes

KEYWORDS: Reflectors, Telescopes, Mirrors, Metrology, Interferometers, Copper, Space telescopes, Profilometers, Infrared radiation, Reflector telescopes

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SPIE Conference Volume | July 31, 2003

Smart Structures and Materials 2003: Damping and Isolation

PROCEEDINGS ARTICLE | June 27, 2002

Beam-type modeling of adaptive inflatable tubes

Proc. SPIE. 4697, Smart Structures and Materials 2002: Damping and Isolation

KEYWORDS: Defense and security, Actuators, Weapons, Optical spheres, Data modeling, Satellites, Microelectronics, Analytical research, Space operations, Beam analyzers

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SPIE Conference Volume | June 27, 2002

Smart Structures and Materials 2002: Damping and Isolation

PROCEEDINGS ARTICLE | June 27, 2002

Vibration suppression of a rotationally periodic structure using an adaptive/PPF control law

Proc. SPIE. 4697, Smart Structures and Materials 2002: Damping and Isolation

KEYWORDS: Defense and security, Actuators, Matrices, Control systems, Vibration control, Aluminum, Analytical research, Adaptive control, Feedback control, Francium

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PROCEEDINGS ARTICLE | August 16, 2001

Optical metrology of adaptive membrane mirrors

Proc. SPIE. 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems

KEYWORDS: Monochromatic aberrations, Mirrors, Imaging systems, Etching, Wavefront sensors, Wavefronts, Adaptive optics, Aluminum, Epoxies, Ferroelectric polymers

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PROCEEDINGS ARTICLE | August 16, 2001

Modeling piezoceramic twist actuation in a single-cell anisotropic torque box

Proc. SPIE. 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems

KEYWORDS: Defense and security, Actuators, Ferroelectric materials, Skin, Composites, Differential equations, Finite element methods, Chemical elements, Adaptive control, Aerodynamics

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PROCEEDINGS ARTICLE | July 2, 2001

Adaptive control for payload launch vibration isolation

Proc. SPIE. 4331, Smart Structures and Materials 2001: Damping and Isolation

KEYWORDS: Rockets, Magnesium, Satellites, Matrices, Adaptive control, Space operations, Vibration isolation, Passive isolation, Optical isolators, Active isolation

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PROCEEDINGS ARTICLE | June 22, 2000

Piezoelectric excitation of inflatable space structures for modal testing

Proc. SPIE. 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems

KEYWORDS: Radar, Reflectors, Solar energy, Aerospace engineering, Polymers, Finite element methods, Antennas, Space operations, Electrodynamics, Ferroelectric polymers

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PROCEEDINGS ARTICLE | July 9, 1999

Preliminary analysis of hybrid launch isolation for spacecraft

Proc. SPIE. 3674, Smart Structures and Materials 1999: Industrial and Commercial Applications of Smart Structures Technologies

KEYWORDS: Magnesium, Satellites, Control systems, Simulink, Analytical research, Space operations, Vibration isolation, Passive isolation, Optical isolators, Systems modeling

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PROCEEDINGS ARTICLE | June 2, 1999

Piezoelectric coupling of bladed-disk assemblies

Proc. SPIE. 3672, Smart Structures and Materials 1999: Passive Damping and Isolation

KEYWORDS: MATLAB, Statistical analysis, Electrodes, Manufacturing, Analytical research, Motion models, Aerodynamics, Electronic design automation, Standards development, Astronomical engineering

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PROCEEDINGS ARTICLE | May 1, 1996

Nonlinear piezoelectric vibration absorbers

Proc. SPIE. 2720, Smart Structures and Materials 1996: Passive Damping and Isolation

KEYWORDS: Sun, Electrodes, Complex systems, Numerical simulations, Capacitance, Analytical research, Chemical elements, Feedback control, Standards development, Piezoelectric effects

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PROCEEDINGS ARTICLE | May 12, 1995

Active smart material system for buffet load alleviation

Proc. SPIE. 2447, Smart Structures and Materials 1995: Industrial and Commercial Applications of Smart Structures Technologies

KEYWORDS: Mathematical modeling, Actuators, Data modeling, Sensors, Matrices, Skin, Control systems, Aerodynamics, Control systems design, Smart materials

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PROCEEDINGS ARTICLE | May 5, 1995

Single-element modeling of multilayer constrained-layer damping treatments

Proc. SPIE. 2445, Smart Structures and Materials 1995: Passive Damping

KEYWORDS: Composites, Kinematics, Partial differential equations, Solids, Differential equations, Finite element methods, Chemical elements, Optimization (mathematics), Performance modeling, Temperature metrology

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PROCEEDINGS ARTICLE | May 1, 1994

Active/passive piezoelectric vibration suppression

Proc. SPIE. 2193, Smart Structures and Materials 1994: Passive Damping

KEYWORDS: Actuators, Ferroelectric materials, Capacitors, Data modeling, Electrodes, Resistance, Control systems, Solids, Chlorine, Instrument modeling

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PROCEEDINGS ARTICLE | September 8, 1993

Vibration attenuation of aircraft structures utilizing active materials

Proc. SPIE. 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems

KEYWORDS: Actuators, Sensors, Signal attenuation, Control systems, Vibration control, Smart structures, Intelligence systems, Acoustics, Aircraft structures, Active vibration control

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