摘要
针对非线性摩擦导致叶片辊轧机轧辊的左右调整机构调整精度降低的问题,提出一种基于自适应模糊摩擦逼近补偿的全局滑模控制策略。建立了含非线性摩擦模型的辊轧机左右调整机构动力学模型,基于改进的Lu Gre动态摩擦模型,采用自适应模糊摩擦逼近方法实现调整机构中摩擦的在线补偿,结合全局滑模控制保证系统在响应过程中具有一定的鲁棒性。利用Matlab/Simulink软件对控制过程进行跟踪仿真,并将本文控制策略应用于现场实际中,验证了本文方法的有效性,研究结果表明:控制策略可以实现系统轨迹的高精度追踪,本文方法可以很好地实现轧辊机左右调整机构的控制。
For the problem that nonlinear friction caused the adjustment accuracy to decrease in the left and right adjustment mechanism of blade rolling mill,the global sliding mode control strategy based on adaptive fuzzy friction approximation compensation was proposed.Then,the dynamic model of left and right adjustment mechanism for rolling mill with nonlinear friction model was established,and based on the improved Lu Gre dynamic friction model,the online compensation of friction in the adjustment mechanism was realized by the adaptive fuzzy friction approximation method.Combined with the global sliding mode control,the system ensured to have a certain robustness in the response process,and the control process was tracked and simulated by software Matlab/Simulink.Furthermore,the control strategy was applied to the field reality to verify its validity.The results show that the control strategy realizes the high-precision tracking of system trajectories and the control of left and right adjustment mechanism of rolling mill.
作者
张瑜
王立新
陈洪月
毛君
Zhang Yu;Wang Lixin;Chen Hongyue;Mao Jun(School of Mechanical Engineering,Anyang Institute of Technology,Anyang 455000,China;Anyang Key Laboratory of Advanced Aeronautical Materials and Processing Technology,Anyang Institute of Technology,Anyang 455000,China;School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2020年第7期148-152,164,共6页
Forging & Stamping Technology
基金
河南省高等学校重点科研项目(19A460010)。
关键词
辊轧机
调整机构
摩擦补偿
自适应模糊摩擦逼近法
全局滑模控制
rolling mill
adjustment mechanism
friction compensation
adaptive fuzzy friction approximation method
global sliding mode control
