华南农业大学学报2016，Vol.37Issue(6)：10-15,6.DOI:10.7671/j.issn.1001-411X.2016.06.002
小型无人机振动特性对超声波传感器的影响
Impacts of small-size unmanned aerial vehicle vibration characteristics on ultrasonic transducers
摘要
Abstract
[Objective]Obstacle avoidance is a crucial issue in unmanned aerial vehicle( UAV) operation. Ultrasonic transducers are critical components in UAV obstacles avoidance system.The vibration charac-teristics of UAV are important to increase UAV obstacles avoidance capability.Research was conducted to understand the vibration characteristics of small-size UAV( SUAV) and impacts of vibration on ultra-sonic sensors.[Method]Spatial distributions of SUAV vibration strength and the distributions in frequen-cy domain were derived by acquiring SUAV vibration data at multiple test points with different throttles. The impact of SUAV vibration characteristic on ultrasonic transducer performance was detected through the spatial distribution of vibration strength.[Result]With the distance away from the center and along the arms of SUAV, the increase and decrease of vibration strength occurred alternatively.Equipped with propellers , the ultrasonic transducer had a max error of 0 .69 m in horizontal direction while the maximum error only reached 0.20 m in vertical direction.[Conclusion]With the distance away from center and throttles increasing, the amplitude of vibration is strengthened.To avoid the effect of vibration, it is nec-essary to adjust the vibrational frequency of sensor.Findings reported in this paper may provide guidance for applications of ultrasonic transducer in agricultural SUAVs.关键词
小型无人机/振动特性/空间分布/超声波传感器/误差/农业航空Key words
small-size unmanned aerial vehicle/vibration characteristic/spatial distribution/ultrasonic transducer/error/agricultural aviation分类
农业科技引用本文复制引用
岳学军,王健,兰玉彬,岑振钊,刘永鑫,凌康杰,甘海明,王林惠..小型无人机振动特性对超声波传感器的影响[J].华南农业大学学报,2016,37(6):10-15,6.基金项目
国家自然科学基金（41471351）；华南农业大学校长基金 （）
