DocumentCode :
2076958
Title :
Application of Model-Free Adaptive Control in billet flash butt welding
Author :
Guo Dong ; Fu Yongling ; Lu Ning ; Wang Weihong
Author_Institution :
Beihang Univ., Beijing, China
fYear :
2010
fDate :
29-31 July 2010
Firstpage :
5110
Lastpage :
5114
Abstract :
In the process of billet flash butt welding of the ending welding rolling (EWR), the huge upset force served by dual loading hydraulic cylinder must respond with high-speed, and it demands the two cylinders move and load synchronously while the cylinders are sharing the even load. Furthermore, in the upset force loading system, there are nonlinear parts which are difficult to model accurately, time-varying parameters to hydraulic system, and force coupling arising from mechanical structure. Considering abovementioned challenges, we present our force control approach based on Model-Free Adaptive Control (MFAC) and element-based physical modeling. First, the element model of loading system is directly built upon AMESim, thus ensuring our model reflects the nonlinearity characteristics of hydraulic system and the feature of actuator mechanical coupling; second, MFAC is designed and based on it the force servo simulations research are done through joint platform provided by AMESim and Matlab. The results show that the difficulty of modeling the system is successfully solved by introducing of physical modeling tool of AMESim, the upset force servo can achieve sound performance based on MFAC, and hence, the feasibility of our approach is verified.
Keywords :
billets; butt welding; hydraulic actuators; model reference adaptive control systems; rolling; AMESim; EWR; MFAC; Matlab; actuator mechanical coupling; billet flash butt welding; dual loading hydraulic cylinder; element-based physical modeling; ending welding rolling; force control approach; force servo simulations; loading system element model; model-free adaptive control; upset force loading system; Adaptation model; Force; Load modeling; Mathematical model; Servomotors; Synchronization; Welding; AMEsim; EWR; Force Servo; MFAC; Simulation Research;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference (CCC), 2010 29th Chinese
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6263-6
Type :
conf
Filename :
5572267
Link To Document :
بازگشت