LAPSE:2019.1577
Published Article
LAPSE:2019.1577
Research on the Vertical Vibration Characteristics of Hydraulic Screw Down System of Rolling Mill under Nonlinear Friction
Yongshun Zhang, Wanlu Jiang, Yong Zhu, Zhenbao Li
December 13, 2019
The rolling mill with hydraulic system is widely used in the production of strip steel. For the problem of vertical vibration of the rolling mill, the effects of different equivalent damping coefficient, leakage coefficient, and proportional coefficient of the controller on the hydraulic screw down system of the rolling mill are studied, respectively. First, a vertical vibration model of a hydraulic screw down system was established, considering the nonlinear friction and parameter uncertainty of the press cylinder. Second, the correlation between different equivalent damping coefficient, internal leakage coefficient, proportional coefficient, vertical vibration was analyzed. The simulation results show that, in the closed-loop state, when Proportional-Integral-Derivative (PID) controller parameters are fixed, due to the change of the equivalent damping coefficient and internal leakage coefficient, the system will have parameter uncertainty, which may lead to the failure of the PID controller and the vertical vibration of the system. This study has theoretical and practical significance for analyzing the mechanism of vertical vibration of the rolling mill.
Keywords
flow control, friction-induced vibration, hydraulic screw down system, LuGre model, PID controller, rolling mill, vertical vibration
Suggested Citation
Zhang Y, Jiang W, Zhu Y, Li Z. Research on the Vertical Vibration Characteristics of Hydraulic Screw Down System of Rolling Mill under Nonlinear Friction. (2019). LAPSE:2019.1577
Author Affiliations
Zhang Y: Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao 066004, China; National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangda
Jiang W: Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao 066004, China; Heavy-duty Intelligent Manufacturing Equipment Innovation Center of Hebei Province, Yanshan University, Qinhuangdao 066
Zhu Y: Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China [ORCID]
Li Z: Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao 066004, China
Journal Name
Processes
Volume
7
Issue
11
Article Number
E792
Year
2019
Publication Date
2019-11-02
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr7110792, Publication Type: Journal Article
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LAPSE:2019.1577
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doi:10.3390/pr7110792
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Dec 13, 2019
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Dec 13, 2019
 
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Calvin Tsay
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