...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Experimental Validation for a Multifunctional Wing Spar With Sensing, Harvesting, and Gust Alleviation Capabilities
【24h】

Experimental Validation for a Multifunctional Wing Spar With Sensing, Harvesting, and Gust Alleviation Capabilities

机译：具有感测，收割和减轻阵风功能的多功能翼梁的实验验证

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper experimentally examines a multifunctional gust alleviation system and holds promise for improving small unmanned aerial vehicles performance in wind gusts. The designed multifunctional wing spar is able to harvest energy itself from the normal vibrations during flight. If the wing experiences any strong wind gust, it will provide vibration control to maintain its stability. The proposed wing spar carries on the functions of energy harvesting, strain sensing, and gust alleviation via piezoelectric materials. A closed form electromechanical cantilever multifunctional beam model is developed, which captures the basics of piezoelectric constitute equations using Euler–Lagrange equations. An enhanced two mode reduced energy control (REC) law is developed to saturate a positive strain feedback (PSF) control law, and therefore decrease energy consumption but maintains the same gust alleviation performance. An equivalent circuit model is also developed based on the distributed parameter method to represent a multifunctional gust alleviation system using harvested energy. Experimental results show that compared to conventional PSF control law, the REC decreases voltage supply from ±20 to ±4 V, uses 76% less energy whereas maintaining the same performance. Experimental results also show that it is feasible to alleviate wind gust disturbance using harvested power from ambient vibrations, but requires the harvesting time to be 0.42 times longer than the wind gust duration.
机译：本文通过实验研究了一种多功能的阵风缓解系统，并有望改善阵风中小型无人机的性能。设计的多功能翼梁能够从飞行过程中的正常振动中获取能量。如果机翼遇到强风，它将提供振动控制以维持其稳定性。所提出的翼梁通过压电材料来实现能量收集，应变感测和减轻阵风的功能。建立了一种封闭形式的机电悬臂多功能梁模型，该模型使用Euler–Lagrange方程式捕获压电结构方程式的基础。开发了增强的两模减少能量控制（REC）律，以使正应变反馈（PSF）控制律饱和，因此可以降低能耗，但保持相同的阵风缓解性能。还基于分布参数方法开发了等效电路模型，以表示使用收获的能量的多功能阵风缓解系统。实验结果表明，与传统的PSF控制律相比，REC将电源电压从±20 V降低到±4 V，能耗降低了76％，同时保持了相同的性能。实验结果还表明，利用来自环境振动的采集功率来缓解阵风干扰是可行的，但要求采集时间要比阵风持续时间长0.42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