Test Bed Vibration Suppression via Virtual Correction
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Solution Overview
Problem
Existing test bed systems experience undesired vibrations and resonances due to the dynamic response behavior of actuators and sensors, which can lead to inaccurate test results and system instability, especially when simulating extreme load cases, and conventional filtering methods limit the dynamics of the test bed and distort dynamic states.
Innovation Solution
A method that determines correction values from measured variables or control variables to be added to the virtual component, allowing for the suppression of undesired vibrations and resonances without altering the test bed infrastructure, by optimizing target functions to manage energy and momentum balances and adhering to physical limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional filtering methods are used to reduce vibrations, then vibration reduction is achieved, but the dynamics of the test bed are limited and dynamic states are distorted
Solution Approach 1:
The patent replaces conventional mechanical filtering methods with a virtual correction component implemented as software. The correction unit calculates correction values based on measured variables and adds them to control variables, thereby compensating for vibrations and resonances without physical filtering. This substitution allows vibration reduction while preserving the dynamic characteristics and accuracy of the test bed system.
2Adaptability or versatility
If the test bed simulates extreme load cases, then test completeness is improved, but undesired vibrations and resonances increase
Solution Approach 1:
The patent introduces a correction unit as an intermediary between the virtual component and the actuator. This correction unit processes control variables by calculating and adding correction values that compensate for vibrations and resonances generated during extreme load case simulation. The intermediary enables complete test coverage while actively suppressing harmful vibrations and resonances.
3Object-affected harmful factors
If correction values are determined and added to control variables, then vibration suppression is achieved, but system complexity increases
Solution Approach 1:
The patent replaces complex mechanical vibration suppression systems with a software-based correction unit. The correction unit determines correction values from measured variables and adds them to control variables, achieving vibration suppression through computational methods rather than mechanical means. This approach reduces physical system complexity while maintaining effective vibration control.
Data Source
AI summary
In order to reduce the excitation of vibrations and resonances in a test bed for a real component and a virtual component, one of the following method steps is provided: a) determining a first correction value (K1) from the measured variable (M), wherein the first correction value (K1) is added to the measured variable (M) and the sum is communicated as a corrected measured variable (M*) to the virtual component for calculating the control variable (S), b) determining a second correction value (K2) from the calculated control variable (S), wherein the second correction value (K2) is added to the calculated control variable (S) and the sum is transferred as a corrected control variable (S*) to the actuator, c) determining a third correction value (K3) from the measured variable (M), wherein the third correction value (K3) is used to modify a parameter (P) of the equation of movement.