Abstract
In order to research vibration control for detuned satellite antenna structures, dynamic models of these structures were established using the finite element method. The respective dynamic characteristics of detuned versus properly tuned structures were investigated using the model. Active vibration control of the structures was studied by individually applying predictive control and then a linear quadratic regulator (LQR) control method. The simulation results showed that small amounts of detune in a weakly coupled antenna structure can induce remarkable localization of the vibration mode. It was found that when mismatch induced by detune exists, the vibration of the structure could also be restrained by predictive method, while LQR made the structure vibrate more aggressively. Detune must be seriously considered in active vibration control of antenna structures.
| Original language | English |
|---|---|
| Pages (from-to) | 434-437 |
| Number of pages | 4 |
| Journal | Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University |
| Volume | 31 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2010 |
| Externally published | Yes |
Keywords
- Antenna structure
- Detune
- Dynamic characteristics
- Finite element model
- Modes localization
- Predictive control
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