基于综合滤波算法与模糊PID控制的温度控制系统  

Temperature Control System Based on Integrated Filtering Algorithm and Fuzzy PID Control

作　　者：李幸 周凤星[1] 严保康[1] LI Xing;ZHOU Feng-xing;YAN Bao-kang(College of Information Science and Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学信息科学与工程学院,湖北武汉430081

出　　处：《仪表技术与传感器》2019年第3期77-81,96,共6页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(61174106);武汉科技大学大学生科技创新基金研究项目(17ZRC166)

摘　　要：为满足某氮氧化物(NO_x)传感器精度测试系统"传感器温度应维持在750℃以确保测试结果的准确性"的要求,提出了一种综合滤波算法(以中位值、滑动平均、消抖滤波法及平移不变量小波去噪法为基础)用来消除噪声对温度信号的干扰,并辅以模糊自适应PID控制以维持传感器温度在750℃左右。实验证明:该综合算法可消除大部分噪声的干扰,能使传感器温度稳定在750±1℃,满足了检测系统的需要。To meet the requirement"the temperature of the sensor should be maintained at 750 ℃ to ensure the accuracy of the test results"that a nitrogen oxide(NO x)sensor precision testing system proposed,a comprehensive filtering algorithm based on median,moving average,dejitter filtering and translation invariant wavelet denoising was put forward to eliminate noise s interference to temperature signals,after the filtering,a fuzzy adaptive PID control was used to maintain the temperature of the sensor at about 750 ℃.The experimental results show that the integrated algorithm can eliminate the interference of most noise and the temperature of the sensor can be stabilized at 750 ℃±1 ℃,which meets the needs of the testing system.

关 键 词：中位值 滑动平均 消抖滤波法 平移不变量小波去噪 模糊自适应PID控制 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]