超声声场分布测量三轴移动系统设计  

Ultrasonic acoustic field distribution measurement three-axis motion system design

作　　者：鲁晓悦 荣宪伟[1] LU Xiaoyue;RONG Xianwei(School of Physics and Electronic Engineering,Harbin Normal University,Harbin 150028,China)

机构地区：[1]哈尔滨师范大学物理与电子工程学院,黑龙江哈尔滨150028

出　　处：《传感器与微系统》2022年第11期113-116,121,共5页Transducer and Microsystem Technologies

摘　　要：超声换能器的声压分布特性对超声检测过程中缺陷的定位、尺寸大小的定量有极大的影响。本文设计了用于超声声场分布测量的直角坐标型三轴移动系统。该系统采用三条相互垂直的精密研磨丝杠组成直角坐标机械臂系统,丝杠采用步进电机作为驱动。设计了轨迹规划算法和上位机控制软件。实验结果表明:本文系统实现了三维运动位置精确控制,并经过多次测量后,最大位置误差不超过0.04 mm。上位机软件控制三轴移动系统拖动水听器可以实现超声声场的直线扫描和断面扫描测量,描绘声场分布。Sound pressure distribution characteristics of ultrasonic transducer have a great impact on positioning of defects and quantitation of size in process of ultrasonic inspection.A cartesian coordinate three-axis motion system used for ultrasonic acoustic field distribution measurement is designed.The system uses three precision grinding screws perpendicular to each other to form a cartesian coordinate manipulator system, and the screw adopts stepper motor as the drive.The trajectory planning algorithm and host computer control software are designed.Experimental results show that the system realizes the precise control of three-dimensional motion position, and the maximum position error of the system does not exceed 0.04 mm after multiple measurements.The host computer software controls the three-axis movement system to drag the hydrophone, so as to achieve linear scanning and cross-sectional scanning measurement of the ultrasonic sound field, depicts the sound field distribution.

关 键 词：超声声场测量 三轴移动 直角坐标机械臂 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB565.1[自动化与计算机技术—控制科学与工程]