Model-based parameter identification of comprehensive friction behaviors for giant forging press
来源期刊：中南大学学报(英文版)2013年第9期
论文作者：LI Yi-bo(李毅波) PAN Qing(潘晴) HUANG Ming-hui (黄明辉)
文章页码：2359 - 2365
Key words：friction; forging press; modified model; LuGre model; parameter identification
Abstract: A new experimental apparatus was set up to investigate the actual friction characteristics on the basis of speed control of the serve system. A modified friction model was proposed due to real time varying deformation resistance. The approach to identify the parameters of comprehensive friction behaviors based on the modified model was proposed and applied to the forging press. The impacts on parameters which the external load had were also investigated. The results show that friction force decreases with velocity in the low velocity regime whereas the friction force increases with the velocity in the high velocity regime under no external load. It is also shown that the Coulomb friction force, the maximum static friction force and the vicious friction coefficient change linearly with the external load taking the velocity at which the magnitude of the steady state friction force becomes minimum as the critical velocity.
LI Yi-bo(李毅波), PAN Qing(潘晴), HUANG Ming-hui (黄明辉)
(State Key Laboratory of High Performance Complex Manufacturing (Central South University),
Changsha 410083, China)
Abstract:A new experimental apparatus was set up to investigate the actual friction characteristics on the basis of speed control of the serve system. A modified friction model was proposed due to real time varying deformation resistance. The approach to identify the parameters of comprehensive friction behaviors based on the modified model was proposed and applied to the forging press. The impacts on parameters which the external load had were also investigated. The results show that friction force decreases with velocity in the low velocity regime whereas the friction force increases with the velocity in the high velocity regime under no external load. It is also shown that the Coulomb friction force, the maximum static friction force and the vicious friction coefficient change linearly with the external load taking the velocity at which the magnitude of the steady state friction force becomes minimum as the critical velocity.
Key words:friction; forging press; modified model; LuGre model; parameter identification
