Zeros of modal models of flexible structures

It is shown that in some situations the zero patterns of a flexible structure change radically with model order. The refinement of the model by the addition of higher-order modes can cause zeros to appear at low frequencies or in the right half-plane. Structures instrumented with piezoelectric actua...

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Bibliographic Details
Published in:IEEE transactions on automatic control 1993-09, Vol.38 (9), p.1384-1388
Main Authors: Lindner, D.K., Reichard, K.M., Tarkenton, L.M.
Format: Article
Language:English
Subjects:
Control design
Control systems
Exact sciences and technology
Flexible structures
Frequency
Fundamental areas of phenomenology (including applications)
Instruments
Optical fiber sensors
Physics
Piezoelectric actuators
Reduced order systems
Sensor phenomena and characterization
Solid mechanics
Structural and continuum mechanics
Transfer functions
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
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Summary:It is shown that in some situations the zero patterns of a flexible structure change radically with model order. The refinement of the model by the addition of higher-order modes can cause zeros to appear at low frequencies or in the right half-plane. Structures instrumented with piezoelectric actuators and/or fiber-optic sensors are also considered.< >
ISSN:0018-9286
1558-2523
DOI:10.1109/9.237650