传感技术学报2018，Vol.31Issue(4)：545-550,6.DOI:10.3969/j.issn.1004-1699.2018.04.010
冲击波测试系统中压力传感器的实时动态补偿实现
Real-Time Dynamic Compensation of Pressure Sensor in Shock Wave Measurement System
魏娟 1张志杰 1赵晨阳 1李岩峰1
作者信息
- 1. 中北大学仪器科学与动态测试教育部重点实验室,太原030051
- 折叠
摘要
Abstract
The shock wave measurement system must solve the problem of dynamic testing error caused by the effective bandwidth of the sensor,in which the measured signal is difficult to meet or cover when measuring the blast shock signal.Therefore,the dynamic calibration of the sensor is presented to obtain the experimental samples by using a shock tube,the QR decomposition and improved particle swarm optimization(PSO)algorithm are used to quickly estimate the order and coefficient of the dynamic compensation filter. Due to the limited word length effect of the digital filter,this paper chooses the appropriate the quantization bits of the output data and coefficients to satisfy the stability of the test system.In order to realize real-time online correction,a fully parallel single feedback dynamic compensation structure based on FPGA is designed. The experiment results show that the compensation filter can meets the needs of the actual test,and can significantly improve the dynamic response characteristics of the sensor.关键词
冲击波/压力传感器/动态补偿/IIR滤波器Key words
shock wave/pressure sensor/dynamic compensation/IIR digit filter分类
信息技术与安全科学引用本文复制引用
魏娟,张志杰,赵晨阳,李岩峰..冲击波测试系统中压力传感器的实时动态补偿实现[J].传感技术学报,2018,31(4):545-550,6.
