磁致伸缩位移传感器感应信号的分析调理  

Analysis and Conditioning of Induced Signal in Magnetostrictive Displacement Sensor

作　　者：于希文[1] 赵辉[1] 刘伟文[1] 张永杰[1] 

机构地区：[1]上海交通大学仪器科学与工程系,上海200240

出　　处：《大连交通大学学报》2013年第3期56-60,共5页Journal of Dalian Jiaotong University

摘　　要：为了提高磁致伸缩位移传感器感应信号的信噪比和稳定性,同时降低扭转波在波导丝中多次反射叠加而引起信号边沿抖动对测量精度的影响,对感应信号分别做时域和频域相关分析,并在测量电路中做相应信号调理,包括基于数字仿真的模拟滤波电路测试和沿触发定位方式的对比验证实验,论证了所提信号调理方案在提高传感器精度和抗干扰能力方面的可行性.With the purpose of improving SNR and stability of the induced signal in magnetostrictive displace- ment sensor and reducing the impact to the measuring precision caused by signal edge jitter when torsional wave undergoes multiple reflection and superposition inside the waveguide silk, the induced signal in time-do- main and frequency-domain are analyzed respectively, and signal conditioning is carried out accordingly in measuring circuit, including analog filtering design based on digital simulation and comparative study of differ- ent edge-triggered location methods. To conclude, the signal conditioning proposal in improving precision and anti-interference ability is fully feasible.

关 键 词：磁致伸缩位移传感器 感应信号 边沿抖动 滤波 双端沿触发 

分 类 号：TP212.13[自动化与计算机技术—检测技术与自动化装置] TN911.6[自动化与计算机技术—控制科学与工程]