Aeroservoelastic Tailoring with Piezoelectric Materials: Actuator Optimization Studies

This report summarizes aeroservoelastic tailoring studies in which adaptive material actuators are used to control structural deflection of aeroelastic systems. The problem is to furnish enough directed control of a system to make the control of the phenomenon feasible. Specific research problems co...

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Bibliographic Details
Main Authors: Weisshaar, Terrence A, Rotea, Mario A
Format: Report
Language:English
Subjects:
ACTUATORS
ADAPTIVE SYSTEMS
Aerodynamics
AEROSERVOELASTICITY
ATMOSPHERIC MOTION
CONFIGURATIONS
CONTROL
DEFLECTION
DEFORMATION
DETECTORS
Electricity and Magnetism
ENERGY
FINITE ELEMENT ANALYSIS
FLIGHT
Flight Control and Instrumentation
Fluid Mechanics
LIFTING SURFACES
MATERIALS
OPTIMIZATION
OUTPUT
PANELS
PIEZOELECTRICITY
PLATES
RESPONSE
SELECTION
SUPPLIES
SURFACES
TAILORING
TURBULENCE
WINGS
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Summary:This report summarizes aeroservoelastic tailoring studies in which adaptive material actuators are used to control structural deflection of aeroelastic systems. The problem is to furnish enough directed control of a system to make the control of the phenomenon feasible. Specific research problems considered are: choice of the actuator material for effective control; geometric arrangement for active control; and optimum coverage of surface panels for effective control. A specific method of controller design is suggested to determine the limits of control. It is applied to a typical section whose response to random atmospheric turbulence is to be controlled. A finite element method is developed to model actuator and sensor output for plate-like actuators and its use is illustrated for wing-like configurations to demonstrate the benefits of orthotropic material actuators. Finally, the problem of optimum actuators to supply deflection of panels for wing surfaces is examined to determine optimality criteria for such panels and to use strain energy as a guide for efficient use of actuator/host plate combinations. Piezoelectric actuators, Aeroservoelasticity.