柔性运动侧线感知水下动态目标的耦合水动力场特性研究  

The Underwater Dynamic Targets Coupled Hydrodynamic Field Characteristics of Flexible Motion Lateral Line Sensing

作　　者：谢鸥 孙兆光 沈灿 葛飞飞 XIE Ou;SUN Zhaoguang;SHEN Can;GE Feifei(School of Mechanical Engineering,Suzhou University of Science and Technology,Suzhou 215009,China)

机构地区：[1]苏州科技大学机械工程学院,江苏苏州215009

出　　处：《探测与控制学报》2024年第2期131-137,共7页Journal of Detection & Control

摘　　要：为实现柔性运动侧线感知水下动态目标,研究了仿鱼人工侧线与水下运动目标耦合形成的水动力场特性。采用计算流体动力学方法建立仿生机器鱼原地摆动感知目标偶极子源的耦合求解模型,仿真分析偶极子源位置、直径、振动方向和频率对耦合水动力场的影响关系。建立仿生机器鱼自主推进感知目标偶极子源的仿真模型,研究不同振动频率偶极子源的感知定位特性。结果表明:仿生机器鱼原地摆动时压力传感器阵列采集的压力值与距离成反比,与偶极子源直径、最大振幅以及振动频率成正比;仿生机器鱼自主推进时,可通过压力信号的频谱图预测偶极子源振动频率和位置。In order to realize the perception of underwater dynamic targets by flexible moving lateral line,the hydrodynamic field characteristics formed by the coupling of fish-like artificial lateral line and underwater moving target were studied.The computational fluid dynamics method was used to establish a coupling solution model for the robot fish swinging in situ sensing the target dipole source,and the influence relationship of the dipole source position,diameter,vibration direction and frequency on the coupled hydrodynamic field was simulated and analyzed.Furthermore,a simulation model of the dipole source of the bionic robot fish for autonomous propulsion of the sensing target was established,and the perceptual localization characteristics of the dipole source with different vibration frequencies were studied.The results showed that the pressure value acquired by the pressure sensor array when the robot fish swings in place was inversely proportional to the distance,and proportional to the dipole source diameter,maximum amplitude and vibration frequency.In autonomous propulsion,the frequency and position of the dipole source vibration could be predicted from the spectrogram of the pressure signal.

关 键 词：柔性运动 人工侧线 偶极子源 耦合水动力场 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置]