Application of piezoelectric devices to vibration suppression - From modeling and controller designs to implementationEmbedded piezoelectric devices may be ideally suited for vibration control of space structures, which lack an inertial ground. When subjected to an input voltage, an embedded piezoelectric actuator changes its dimensions, which in turn generates a pair of forces exerted on adjacent structural members. From the direct piezoelectric effect, an embedded piezoelectric transducer generates an electric charge proportional to the structural dynamic response. In this paper, the implementation, testing and modeling of an active truss structure consisting of piezoelectric sensors and actuators are described. Linear quadratic Gaussian (LQG), second-order, and direct rate feedback control schemes are designed to suppress the vibrations of the active structure. Simulation and test results are presented. It is shown that special model reduction considerations are required to achieve good correlation between test and analysis.
Document ID
19920072664
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Won, Chin C. (Lockheed Engineering & Sciences Co. Hampton, VA, United States)
Sparks, Dean (NASA Langley Research Center Hampton, VA, United States)
Belvin, Keith (NASA Langley Research Center Hampton, VA, United States)
Sulla, Jeff (Lockheed Engineering & Sciences Co. Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Cybernetics
Report/Patent Number
AIAA PAPER 92-4610
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference