摘要
针对3种典型激励方式(正弦波、三角波及方波)对H型传感器在金属铝板测厚性能方面产生不同影响的问题,提出了先利用Ansoft Maxwell软件的瞬态磁场求解器对H型传感器进行时域仿真分析,然后用基于数据采集卡的测厚系统进行验证的方法。首先采用了Ansoft Maxwell软件的瞬态磁场求解器对H型传感器和金属铝板的建模,分别求解出在3种不同激励信号及不同铝板的厚度下的传感器的感应差压信号,比较分析了所得到的差压信号;然后采用基于凌华DAQ-2205数据采集卡的测厚系统和H型传感器对不同厚度的金属铝片进行试验验证。实验以及研究结果表明:实验涡流测厚系统获得的数据与仿真计算的结果基本相符,由此表明通过利用Ansoft Maxwell软件的瞬态磁场求解器对H型传感器进行时域仿真分析的方法可以获得H型差动式传感器在金属铝板测厚中的最佳激励信号。
Aiming at studying the impaets on the metal aluminum plate thickness ,neasurements using H-type sensor excited by three typical waveforms, a method was put forward that Ansoft Maxwell was used to simulate H-type sensor and the results were analyzed firstly ,then an experiment on the system based on data acquisition card was carried out. Based on the principal, firstly the models of the thickness of the a- luminum plates and H-type sensor were designed using Ansoft Maxwell, and differentia｜ signals were solved under different waveforms and metal aluminum plates with different thicknesses. Secondly, an experimental acquisition system was established. Excitation of the special fre- quency and amplitude was offered from DAQ-2205 data acquisition card. Aluminum plates of different thickness were tested under the H type sensor. The results indicate that the simulation data were verified by the experimental data, which show optimum excitation for H-type electro- magnetic eddy current sensor for thickness measurement can be acquired through the above method.
出处
《机电工程》
CAS
2014年第1期1-6,11,共7页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金国际重大合作资助项目(60910001)
关键词
H型差动式传感器
时域仿真
金属铝板测厚
最佳激励信号
H-type sensor
time-domain simulation
Ansoft Maxwell
aluminum plate thickness measurements
optimal excitation
