作者：尚贤平¹, 费利萍¹, 余松青¹, 毛晓辉¹, 李海根²

作者单位：1. 浙江省计量科学研究院, 浙江 杭州 310018;
2. 绍兴市肯特机械电子有限公司, 浙江 绍兴 312300

关键词：计量学;疲劳试验装置;伺服控制;电子吊秤

摘要：

电子吊秤机械安全特性主要包含极限载荷和低频动态疲劳两项指标,为解决其检测问题,设计一套专用的检测装置。该装置采用伺服电机直接驱动油泵分别向静态油缸和动态油缸交互供油的方式,动态地调整伺服电机的转矩、转速及旋转方向,通过动、静油缸的压力产生较为稳定的极限载荷和低频动态载荷施加在电子吊秤上。实验结果显示:该试验装置产生的静态极限载荷误差1%、低频动态载荷峰值误差2%,能满足电子吊秤的机械安全性能检测。

Research of electronic hanging scale safety testing device based on servo control system

SHANG Xianping¹, FEI Liping¹, YU Songqing¹, MAO Xiaohui¹, LI Haigen²

1. Zhejiang Institute of Metrology, Hangzhou 310018, China;
2. Shaoxing Kent Mechanical and Electrical Co., Ltd., Shaoxing 312300, China

Abstract: In order to detect the ultimate loads and low frequency dynamic fatigue loads which are the two major safety indicators for electronic hanging scale, a specially designed electronic hanging scale testing devices was introduced in this paper. Driven by servo motor, hydraulic oil was pumped into static and dynamic cylinder separately which dynamically adjusted the torque, speed and direction of rotation of the servo motor. As such, a more stable limited loads and low dynamic loads was guaranteed by the pressure difference between static and dynamic cylinders. According to the experiment, by using this device, a static ultimate load error less than ±1% and the low frequency dynamic peak error of less than ±2% was obtained. Hence, this device meets the requirements of electronic hanging scale safety test.

Keywords: metrology;fatigue testing equipment;servo control;electronic hanging scale

2016, 42(2): 79-82  收稿日期: 2015-5-20;收到修改稿日期: 2015-7-15

基金项目: 浙江省质检局科技项目(20120212)

作者简介: 尚贤平(1966-),男,浙江黄岩市人,高级工程师,主要从事力学计量检测及相关研究工作。

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