Mechanical Object Vibration Analysis with Fused 3D Spectrograms
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Solution Overview
Problem
Existing methods for analyzing the complex vibrational behavior of mechanical systems, such as turbine compressor disks, are limited by the inability to integrate various measurements with different parameters into a comprehensive analysis, leading to incomplete representation of the system's behavior.
Innovation Solution
A method involving multiple measurements with varying parameters is used to create a spectrogram by fusing partial spectrograms, superimposing additional information like analytically calculated frequencies, and reproducing excitations to provide a comprehensive analysis of the mechanical object's vibration behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional Campbell diagram is used to illustrate vibrational properties, then natural frequencies and excitations can be displayed, but the complicated vibrational behavior dependent on various ambient parameters cannot be fully reproduced
Solution Approach 1:
The patent transitions from the traditional two-dimensional Campbell diagram (frequency vs. rotational speed) to a three-dimensional spectrogram representation that adds the time dimension. This dimensional expansion allows simultaneous display of natural frequencies, excitation frequencies, and their temporal evolution, enabling comprehensive analysis of complex vibrational behavior under varying ambient parameters while maintaining visual interpretability.
2Loss of information
If multiple measurements with different parameters are performed, then comprehensive vibration data can be obtained, but integrating and analyzing these diverse measurements becomes complex
Solution Approach 1:
The patent merges multiple measurements taken under different ambient parameters into a unified spectrogram representation. By transforming diverse measurement data into a common time-frequency domain visualization, the system integrates information from various measurement conditions without requiring separate analysis for each parameter set, thereby reducing analytical complexity while preserving all measurement information.
Solution Approach 2:
The spectrogram serves as a universal representation that can display multiple types of vibration information (natural frequencies, excitation frequencies, amplitude variations) and accommodate measurements under various ambient parameters within a single analytical framework. This multi-functional approach eliminates the need for parameter-specific analysis methods and enables comprehensive vibration behavior assessment.
Data Source
AI summary
The disclosure is directed to a method comprising the steps: carrying out multiple measurements on a mechanical object, the measurements each differing by one or more parameters influencing the measurement; determining a spectrogram on the basis of the measurement data of the measurements and depending on a predefined parameter of the mechanical object; determining one or more excitations of the mechanical object; reproducing the excitations in the spectrogram.