柱式负荷传感器的摆动支承振动分析  

Pendulum Support Vibration Analysis of Column Load Sensors

作　　者：赖朝晖 杨晓翔[1,2] 姚进辉 赖征创 LAI Chaohui;YANG Xiaoxiang;YAO Jinhui;LAI Zhengchuang(College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China;Quanzhou Normal University, Quanzhou 362000, Fujian China;Fujian Province Institute of Metrology, Fuzhou 350003, China)

机构地区：[1]福州大学机械工程及自动化学院,福州350116 [2]泉州师范学院,福建泉州362000 [3]福建省计量科学研究院,福州350003

出　　处：《噪声与振动控制》2019年第1期46-51,66,共7页Noise and Vibration Control

基　　金：国家重大科学仪器设备开发专项资助(2011YQ090009)

摘　　要：动态称重条件下,柱式负荷传感器的支承方式可分为弹性支承和摆动支承。动态称重时,摆动支承的称重系统表现出显著的振动特性,影响称重准确度和负荷传感器的疲劳寿命。针对摆动支承柱式负荷传感器,分析其运动特性得出摆动支承的稳定性条件,得到摆动支承下回复力与摆动角及施加的竖向力近似成正比的关系。利用达朗贝尔原理建立柱式负荷传感器摆动支承振动的动力学控制方程,分别对其自由状态和动态称重状态的动力学响应进行数值计算,得出支承振动振幅和回复时间的影响因素,为动态称重准确度的分析提供参考,同时也可作为称重系统减振的设计依据。Under the condition of dynamic weighing, the support types of the column load sensors can be divided into elastic support and pendulum support. The weighing system with pendulum support shows significant vibration characteristics, which affects the weighing accuracy and the fatigue life of the load sensor. In this paper, the dynamic characteristics of the pendulum supporting column load sensor are analyzed. The stability condition of the pendulum support is obtained. It is found that the restoring force of the pendulum support is approximately proportional to the pendulum angle and the applied vertical load. The dynamic equation of the pendulum support vibration of the column load sensor is established by means of d ' Alembert principle. The numerical calculations of the dynamic response of the weighing system with pendulum support are carried out in the free state and dynamic weighing state respectively. The factors affecting the amplitude and recovery time of the support vibration are obtained. This study provides a reference for the analysis of the dynamic weighing accuracy. It also can be used as the design basis for the vibration damping of the weighing systems.

关 键 词：振动与波 摆动支承 柱式负荷传感器 振动分析 动态称重 

分 类 号：TH113.1[机械工程—机械设计及理论] O325[理学—一般力学与力学基础]