Rolling Mill Roller Assembly Damping for Low-Frequency Vibration
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Solution Overview
Problem
Existing vibration suppression methods for rolling mill rollers can only eliminate high-frequency vibrations, failing to address low-frequency and irregular vibrations, which compromises the reliability and stability of the vibration suppression process.
Innovation Solution
A method and system that involve obtaining amplitude-frequency relationships through simulation analysis to adjust parameters of a vibration damping device, including a magnetorheological (MR) damper and passive damper, to reduce vibration displacement across all frequency bands, ensuring stability and reliability in vibration suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If passive vibration reduction method using mutually exclusive magnetic force or damping liquid flow is used, then high frequency vibration of the rolling mill roller can be eliminated, but low frequency vibration and irregular vibration cannot be eliminated
Solution Approach 1:
The patent applies dynamics by making the damping force adjustable through variable orifice areas in the damping holes. The system transitions from a static passive damping system to a dynamic semi-active system where the damping characteristics can be changed in real-time based on vibration frequency requirements, enabling effective suppression across high, low, and irregular frequency ranges
Solution Approach 2:
The patent implements parameter changes by varying the orifice area of the damping holes to adjust damping force characteristics. By changing geometric parameters (orifice area) of the damping structure, the system can adapt its damping properties to effectively suppress vibrations across different frequency ranges, resolving the limitation of fixed-frequency passive damping
2Reliability
If passive vibration reduction method is used, then simple structure can be maintained, but stability of vibration suppression cannot be guaranteed
Solution Approach 1:
The patent introduces dynamic control capabilities through a control system that adjusts damping forces based on detected vibration characteristics. This semi-active approach maintains structural simplicity while achieving stable vibration suppression across varying operating conditions by dynamically adapting damping parameters rather than requiring complex active control mechanisms
Solution Approach 2:
The damping device employs self-service principles by using the vibration energy itself to drive the adjustment mechanism. The system automatically detects vibration characteristics and adjusts its damping properties without requiring external energy input or complex control algorithms, maintaining simplicity while ensuring stable suppression performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces both high-frequency, low-frequency, and irregular vibration displacements, enhancing the stability and reliability of the rolling mill roller assembly's vibration suppression system.
Implementation Method 1
a magnetorheological (MR) damper
Implementation Method 2
the damping force generated by the damping liquid flow
Data Source
AI summary
A vibration suppression method and system of a rolling mill roller assembly based on a vibration damping device are provided. The vibration suppression method includes: obtaining a first amplitude-frequency relationship during a vibration process of a rolling mill roller assembly vibration suppression system; based on the first amplitude-frequency relationship, determining two time domain relationships and two second amplitude-frequency relationships by a simulation analysis; based on the two time domain and relationships two second amplitude-frequency relationships, adjusting parameters of the vibration damping device until a vibration displacement of the rolling mill roller assembly vibration suppression system is less than or equal to a vibration displacement threshold. And provides a new solution for the stability control of the rolling mill, and ensures the reliability and stability of the vibration suppression of the rolling mill.