机械制造文摘-
一焊接分册
一种用于薄板对接的电容式焊缝跟踪传感器
唐明，李湘文，洪波，袁孙辉
（湘潭大学机械工程学院，湖南湘潭411105）
专题研究
方形及矩形）的电容极板，建立电容式传感器的数学模型，分析得到影响电容式传感器输出特性的四大主要因素，通过Ansof仿真得出传感器输出特性曲线。在对接焊缝跟踪系统测试平台上，试验分析了不同形状极板、结构参数及介质下的传感器输出特性，与仿真结果一致，据此优选确定了传感器参数。最后，对不同高度偏差、复合偏差下的电容输出特性进行信号分析，提取高低偏差信号与电容输出值的拟合函数关系，引入希尔排序策略实现焊缝左右对中，为薄板对接的焊接自动化提供了新的研究思路。
关键词：电容式传感器；参数优化：输出特性；焊缝跟踪中图分类号：TG409
Acapacitiveseamtrackingsensorforbuttweldingofthinplates
TangMing,LiXiangwen,Hong Bo,Yuan Sunhui
(School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China)
Abstract:A new type ofcapacitive sensor is submitted to solve the problem thatbutt welding of thin plates difficult to realize seam tracking. By designing capacitance plates of complicated shapes(ring, square and rectangle)and forming mathematical models ofcapacitive sensors,four main factors that affect output characteristics of capacitive sensors are concluded after repetitive analysis, and an output characteristics curve is reached via Ansoft simulation. Then on the butt seam tracking system test platform, best parameters can be selected when sensor's output characteristics of differently shaped plates with different parameters and medium proved consistent with those of simulation.In the end, a signal analysis of output capacitance with various height deviation as well as compound deviation is conducted to extract height deviation fitting functions. The Shell Sort strategy is introduced to implement horizontal centring, which provides a novel research thinking forwelding automation ofbuttwelding ofthinplates.
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基金项目：国家自然科学基金项目(51575468)；潮南省战略性新兴产业重大科技成果转化项目(2014GK1010)：2015年潮南省教育厅一般项目(15C1309)：
湖南省自然科学联合基金项目(2015JJ5013)
2017年第2期
万方数据
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