• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International astronautical congress >An Optimization of SSDI System for a Beam Structure
【24h】

An Optimization of SSDI System for a Beam Structure

机译：梁结构SSDI系统的优化

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The vibration suppression technique called LR-switching or SSDI (synchronized switch damping on inductor) has attracted considerable interest because of its simplicity, robustness, and high performance. Previously, the authors have experimentally demonstrated that this method can reduce the vibration amplitude of 140kg satellite by 50 percent by using 80 grams piezoelectric transducers. This vibration suppression method converts structural vibration energy into electrical energy as a charge in the capacitance of piezoelectric transducers. Then the polarity of this charge or voltage is inverted according to the phase of structural vibration by a switched inductive shunt circuit, so that the piezoelectric transducer generates the right polarity of force to suppress the structural vibration effectively. Although the loss of the electric energy at this voltage inversion dominates the performance of the technique, it was difficult to estimate this loss from design parameters of the transducer and inductor. Recently, the authors established a mathematical model of this energy loss based on experimental data obtained by using various piezoelectric transducers and inductors. This model enables us to estimate the performance of SSDI technique from design parameters. This article proposes a method of optimization of SSDI system using this model, and demonstrates the benefit brought by this optimization. The optimization maximizes the energy dissipated by the SSDI technique per a cycle of steady state vibration. As an example, a clamped beam is considered, and a SSDI system is optimized to suppress the vibration of the beam effectively. Two examples of the optimization demonstrate enhancement of the damping performance by a factor of 5 due to this optimization.
机译：称为LR开关或SSDI（电感器上的同步开关阻尼）的振动抑制技术因其简单，坚固耐用和高性能而引起了人们的极大兴趣。以前，作者已通过实验证明该方法可以通过使用80克压电传感器将140kg卫星的振动幅度降低50％。这种振动抑制方法将结构振动能量转换为电能，作为压电换能器电容中的电荷。然后，该电荷或电压的极性通过开关的电感分流电路根据结构振动的相位而反转，从而压电换能器产生正确的力极性以有效地抑制结构振动。尽管在此电压反转时电能的损耗支配了该技术的性能，但很难根据换能器和电感器的设计参数来估算这种损耗。最近，作者根据使用各种压电换能器和电感器获得的实验数据建立了这种能量损失的数学模型。该模型使我们能够根据设计参数估算SSDI技术的性能。本文提出了一种使用该模型的SSDI系统优化方法，并论证了这种优化所带来的好处。优化过程使每个周期振动产生的SSDI技术消耗的能量最大化。作为示例，考虑了一个夹紧梁，并且优化了SSDI系统以有效抑制梁的振动。优化的两个示例表明，由于该优化，阻尼性能提高了5倍。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号