Development of seam tracking system with ultrasonic sensor using self-tuning fuzzy control  

作　　者：胡绳荪 孟英谦 刘勇 

出　　处：《China Welding》2001年第1期39-42,共4页中国焊接（英文版）

基　　金：ThispaperissupportedbyNationalNatureScienceFoundation (No .5 95 75 0 6 0 );TianjinNatureScienceFoundation(No .9836 0 5 0 11)

摘　　要：One kind of the SAW seam tracking system with contactless ultrasonic sensor is presented in this paper. The new contactless ultrasonic sensor for seam tracking and the working principle of the seam tracking with the sensor are introduced. Based on the experiments, the optimal values of the fuzzy control parameters α and k 3 are defined by means of the off line adjusting method. Because the self tuning fuzzy control is adopted in the seam tracking system, the overshoot of the system is restrained, the steady state error is reduced, and the system's response speed is improved effectively. The results of the SAW seam tracking experiments show that this system's tracking accuracy is up to ±0.5 mm and the system can satisfy the requirements of the engineering application.One kind of the SAW seam tracking system with contactless ultrasonic sensor is presented in this paper. The new contactless ultrasonic sensor for seam tracking and the working principle of the seam tracking with the sensor are introduced. Based on the experiments, the optimal values of the fuzzy control parameters α and k 3 are defined by means of the off line adjusting method. Because the self tuning fuzzy control is adopted in the seam tracking system, the overshoot of the system is restrained, the steady state error is reduced, and the system's response speed is improved effectively. The results of the SAW seam tracking experiments show that this system's tracking accuracy is up to ±0.5 mm and the system can satisfy the requirements of the engineering application.

关 键 词：seam tracking ultrasonic sensor self  tuning fuzzy control 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]