基于变论域模糊PID的金属热处理过程温度控制方法  

Temperature Control Method of Metal Heat Treatment Process Based on Variable Universe Fuzzy PID

作　　者：党丽[1] DANG Li(School of Computer Science and Software,Shaanxi Institute of Technology,Xi'an 710300 China)

机构地区：[1]陕西国防工业职业技术学院,陕西西安710300

出　　处：《自动化技术与应用》2024年第1期14-17,21,共5页Techniques of Automation and Applications

摘　　要：为高效且安全地提取金属合金内的可用材质并分析其性能,利用变论域模糊PID技术,实现对热处理过程的温度控制。设定在金属规则状态不变的情况下,论域会随着偏差的缩减出现伸缩,即需要增添新的规则。若偏差率能够支持模糊量化取整,控制器的伸缩因子可能会陷入无法取值的情况。此时,通过二元函数分片双一次插值法计算伸缩因子,在临近分档之间填充新规则,确保伸缩因子取值的连续性。然后,在模糊PID控制过程中加入变论域,依靠控制器实现对金属热处理过程温度的控制。根据实验验证情况可知:该方法有效提高了控制效果,在应用该方法后,缩短了温度控制时间,在100s内就可以是加热温度到达拟定值。To efficiently and safely extract available materials from metal alloys and analyze their performance,variable universe fuzzy PID technology is used to achieve temperature control during the heat treatment process.Assuming that the metal rule state remains unchanged,the domain expands and contracts as the deviation decreases,requiring the addition of new rules.If the deviation rate can support fuzzy quantization rounding,the scaling factor of the controller may fall into a situation where it cannot be taken.At this point,the scaling factor is calculated using the bivariate function partition biquadratic interpolation method,and new rules are filled in between adjacent partitions to ensure the continuity of the scaling factor values.Then,a variable universe is added to the fuzzy PID control process,relying on the controller to control the temperature of the metal heat treatment process.According to the experimental verification,it can be seen that this method effectively improves the control effect.After applying this method,the temperature control time is shortened,and the heating temperature can reach the predetermined value within 100 seconds.

关 键 词：变论域 模糊PID控制器 金属热处理 温度控制 伸缩因子 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TG151.1[自动化与计算机技术—控制科学与工程]