基于高阶累积量的阵列式超声波传感器风速风向测量
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TH765

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国家自然科学基金(61571462)、吉林省教育厅科学技术项目(UJKH20190590KJ,JKH20190591KJ)、长春理工大学青年科学基金(XQNJJ-2017-12)项目资助


Wind speed and direction measurement with array ultrasonic sensors based on high-order cumulant
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    摘要:

    针对现有超声波测风系统在实际应用中环境噪声抑制效果差、风速和风向测量精度不高的问题,提出了一种基于高阶累积量的阵列式超声波传感器风速风向测量方法。所提方法采用一种由一个超声波发射阵元和五个超声波接收阵元组成的阵列式超声波测风系统结构,并在此系统结构上,采用基于高阶累积量的多重信号分类(MUSIC)算法,抑制高斯白噪声及高斯色噪声的干扰,实现高斯混合噪声下风速风向的有效测量。所提方法与应用相关算法的测风方法相比,具有更高的噪声抑制能力及更高的风速风向测量精度。最后通过仿真实验与实测数据验证实验对所提方法的有效性进行了验证与分析,实验结果表明风速和风向角的测量误差分别为2.3%和-2°,基本达到了超声波测风方法的技术要求。

    Abstract:

    Aiming at the problems of poor environmental noise suppression effect and low accuracy of wind speed and directionmeasurement in the existing ultrasonie wind measurement system in practieal application, an array ultrasonie sensor based on high-ordercumulant is proposed to measure wind speed and direction. The proposed method adopls the structure of an ultrasonie wind measurementsystem, which consists of an ultrasonie transmitting aray and five ulirasonic receiving array elements. On the structure of the system,muli-signal clasification(MUSIC)algorithm based on the high-orler cumulant is adopted to realize the effective measurement of windspeed and direction under Gaussian white noise or Gaussian mixed noise, which can effectively suppress the interference of whiteGausian noise and color noise. Compared with wind measurement method using correlation algorithm, the proposed method has highernoise suppression ability and higher measurement accuraey of wind speed and direction. Finally, the effectiveness of the proposed methodis verified and analyzed through simulation experiments and measured data verification experiments. Experimental results show that themeasurement errors of wind speed and wind dircetion Angle are 2.3% and-2°,respectively, which basically meet the technicalrequirements of ultrasonic wind measurement methods.

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单泽彪,鲁胜麟,刘小松,解晓冉.基于高阶累积量的阵列式超声波传感器风速风向测量[J].仪器仪表学报,2021,(6):279-286

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  • 在线发布日期: 2023-06-28
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