多旋翼无人机惯性单元阻尼减振设计与仿真研究  

Vibration Reduction Design and Simulation of IMU Damper for Multi Rotor UAV

作　　者：周苏洁 ZHOU Sujie(Zhejiang College of Security Technology,Wenzhou 325016,China)

机构地区：[1]浙江安防职业技术学院,浙江温州325016

出　　处：《河南科技》2022年第5期33-36,共4页Henan Science and Technology

基　　金：浙江安防职业技术学院2021年校级科研项目“多旋翼无人机惯性单元阻尼减振设计与仿真研究”(AF2021Y03)。

摘　　要：为了提高无人机飞行的稳定性,提出一种基于干摩擦效应的多旋翼无人机惯性单元阻尼减振器,即利用橡胶摩擦片与悬臂支架之间的接触摩擦作用,从而达到耗散振动能量的目的。首先对干摩擦器进行结构设计,并建立其有限元仿真模型;其次利用瞬态动力学分析干摩擦阻尼器的减振效果。结果显示:安装干摩擦阻尼减振器可以明显改善惯性测量单元的阻尼特性,使得振动幅值最大衰减率可达89%,验证了干摩擦阻尼器具有良好的减振性能。In order to improve the flight stability of UAV system,a vibration damper based on dry friction effect is proposed.The purpose of dissipating vibration energy is achieved by using the contact friction between dry friction damping plate and cantilever support.In this paper,the structure of the dry friction device is designed firstly.Then,its finite element simulation model is established.Thirdly,the transient dynamic analysis is used to analyze the vibration reduction effect of dry friction damper.The results show that the installation of dry friction damper can significantly improve the damping characteristics of IMU,and the maximum attenuation rate of vibration amplitude can reach 81%.It is verified that dry friction damper has good damping performance.

关 键 词：多旋翼无人机 干摩擦阻尼 减振 瞬态响应分析 

分 类 号：V279[航空宇航科学与技术—飞行器设计]