Transactions of Materials and Heat Treatment

Title：Analysis on low-velocity friction compensation of large forging

Authors： Li Wenjian Li Yibo Pan Qing

Unit： Li Wenjian Li Yibo Pan Qing

KeyWords： large forging equipment low speed stability fiction observer Matlab Simulink

ClassificationCode：

year,vol(issue):pagenumber：2015,40(1):71-75

Abstract：

Because of nonlinear friction, large forging equipment in low speed is likely to undergo speed fluctuation, jitter, and even creeping phenomenon resulting in poor process performance. By setting up model and numerical simulation, the main factor influences on low speed stability of the large forging equipment is nonlinear friction. The friction compensate was carried out by traditional PID control method and PID control method combined with LuGre-fiction-model based friction observer respectively, and was simulated by Matlab Simulink. The results show that the steady error of speed deduces by 50% using the latter control method in the large forging equipment, which improves low-speed performance, efficiency and stability of the system remarkably.

Funds：

国家973项目“超高强锻件多向成形的流线演变数字化表征与力-位移协同控制”(2011CB706802)

李文坚（1990-），男，硕士研究生

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