Back to Search
Start Over
An active truss element and control law for vibration suppression
- Source :
- Smart Materials and Structures. 4:264-269
- Publication Year :
- 1995
- Publisher :
- IOP Publishing, 1995.
-
Abstract
- In order to meet the demands of simplicity and reliability in active control systems for flexible structures, an inexpensive active truss element and control law has been developed in this research. A decentralized switching control law is used along with a compressible fluid in the truss element in order to dissipate energy during the motion of the structure. However, the energy is not absorbed in the same manner as a conventional viscous damper. The truss element retains its maximum stiffness, but has a reset-able nominal unstressed length. Energy is absorbed in the working fluid of the truss element through heat transfer to the environment when the nominal length is reset at the proper switching times. The control law is insensitive to changes in structural parameters such as mass, stiffness, and damping. In this paper, a mathematical model for the system is presented along with a stability analysis and experimental results.
- Subjects :
- Engineering
business.industry
Truss
Stiffness
Structural engineering
Condensed Matter Physics
Compressible flow
Atomic and Molecular Physics, and Optics
Vibration
Reliability (semiconductor)
Mechanics of Materials
Control theory
Law
Signal Processing
Heat transfer
medicine
Working fluid
General Materials Science
Electrical and Electronic Engineering
medicine.symptom
business
Energy (signal processing)
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 1361665X and 09641726
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Smart Materials and Structures
- Accession number :
- edsair.doi...........6b44010c85b366b36aa0855bcc28bac2