Active Damping of Thermally Induced Vibrations
| Autor: | Daniel J. Inman, Michael I. Friswell, Ralph W. Rietz |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Engineering
Piezoelectric sensor business.industry Mechanical Engineering Vibration control 02 engineering and technology Linear-quadratic regulator 021001 nanoscience & nanotechnology Piezoelectricity Vibration 020303 mechanical engineering & transports 0203 mechanical engineering Heat flux Control theory General Materials Science 0210 nano-technology business Actuator |
| Zdroj: | Journal of Intelligent Material Systems and Structures. 8:678-685 |
| ISSN: | 1530-8138 1045-389X |
| DOI: | 10.1177/1045389x9700800805 |
| Popis: | The prospect of using active damping in a smart structure to suppress thermally induced vibration is investigated. Here smart structure refers to an aluminum structure with an integrated active control system consisting of piezoceramic sensors and actuators. A simply supported aluminum beam is used to illustrate the nature of thermally induced vibrations caused by a suddenly applied heat flux. A distributed piezoelectric self-sensing sensor/actuator pair is implemented to actively suppress the motion caused by thermal disturbances. The effect of large temperature changes on the structure and actuator are taken into account in the control system design. A proportional-derivative controller, a linear quadratic regulator and a positive position feedback filter are considered. Simulation results show that thermally induced vibrations can be damped using currently available smart structure technology, provided temperature effects are properly accounted for in the control law. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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