Abstract
According to the vibration control of piezoelectric laminated structronic thin shell system, a new method for vibration characteristic analysis by using special digital circuit model of smart elements was presented. By means of the finite difference discretization method, the dynamic partial differential equations of the cantilever beam, sensing signal and piezoelectric control moments were transformed to finite difference equations. Dynamics smart elements matrix model based on Newmark-β integration method was established. DSP circuits of smart element simulation systems were fabricated to simulate the output characteristics of the piezoelectric structronic cantilever beam systems under lower modes with different finite difference mesh elements and different integration time steps. The results with different control methods are more precise than that of the analog circuit model in relevant reference. This method provides a new approach for the vibration simulation analysis of piezoelectric structronic systems.
| Original language | English |
|---|---|
| Pages (from-to) | 1070-1074+1095 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 38 |
| Issue number | 8 |
| State | Published - Aug 2012 |
| Externally published | Yes |
Keywords
- Digital circuits
- Finite difference
- Simulation model
- Smart-structure technology
- Vibration control
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