Real-Time Structural Vibration Estimation via Modal Superposition
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Solution Overview
Problem
Existing methods for structural vibration estimation are not capable of real-time estimation, leading to delays in data feedback to equipment users and posing safety risks.
Innovation Solution
A method and apparatus for estimating structural vibration in real time by determining a to-be-estimated measuring point and associated target measuring points, calculating mode and interpolation vibration parameters, and combining these to determine an estimated vibration parameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional vibration estimation methods are used, then vibration parameters can be estimated, but real-time estimation cannot be achieved and data feedback is delayed
Solution Approach 1:
The patent performs preliminary calculations of mode shapes and natural frequencies offline before actual vibration estimation. These pre-computed modal parameters are stored and readily available for real-time estimation, eliminating the need for complex real-time computations and enabling immediate data feedback while maintaining equipment safety
Solution Approach 2:
The patent replaces traditional complex mechanical vibration analysis methods with a simplified modal superposition approach. By substituting the full dynamic analysis with a modal-based estimation method using pre-computed parameters, the system achieves real-time processing capability while maintaining estimation accuracy, thus reducing data feedback time without compromising reliability
2Measurement precision
If complex vibration analysis methods are used, then estimation accuracy is improved, but processing time increases and real-time estimation is lost
Solution Approach 1:
The patent segments the vibration analysis into two distinct phases: offline modal parameter extraction and online vibration estimation. The complex computational tasks are separated from the real-time processing requirements, allowing accurate modal parameters to be pre-computed and stored, while the online phase uses these parameters for rapid vibration estimation, thus maintaining both accuracy and processing speed
Solution Approach 2:
The patent performs preliminary extraction of modal parameters (mode shapes, natural frequencies, damping ratios) before actual vibration estimation. This preliminary action separates the computationally intensive tasks from real-time processing, enabling the system to maintain high measurement precision through accurate modal parameters while achieving fast data processing speed during online estimation
Data Source
AI summary
A method for estimating structural vibration in real time includes steps described below. A to-be-estimated measuring point of a to-be-measured structure is acquired, and at least one target measuring point associated with the to-be-estimated measuring point is determined; coordinates corresponding to each target measuring point of the at least one target measuring point, a target mode corresponding to the each target measuring point and a target vibration parameter corresponding to the each target measuring point are determined; a mode vibration parameter of the to-be-estimated measuring point and an interpolation vibration parameter of the to-be-estimated measuring point are determined based on the to-be-estimated measuring point and in combination with the target mode, the target vibration parameter and the coordinates of the each target measuring point; and an estimated vibration parameter of the to-be-estimated measuring point is determined according to the mode vibration parameter and the interpolation vibration parameter.