Aerostatic Decoupling for 3D Vibration Calibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional vibration sensors face challenges in calibration due to the complexity and time-consuming nature of single-dimensional vibration calibration systems, which also struggle to accurately capture cross-axis coupling, leading to issues with sensitivity matrix determination and structural deformations in conventional decoupling devices.
Innovation Solution
A three-dimensional standard vibrator utilizing aerostatic gas-floating decoupling devices with porous restrictors and air springs, allowing for uniform gas film generation between the vibration platform and vibrators, reducing load and deformation, and enhancing motion decoupling by minimizing interference between axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If latch-type decoupling device is used, then motion decoupling is achieved, but assembly accuracy requirement becomes excessively high and structural deformation occurs
Solution Approach 1:
The patent replaces the mechanical latch-type decoupling device with an aerostatic bearing system that uses compressed air to create a floating support mechanism. Gas holes are drilled through the support plate to generate aerostatic pressure, forming a stable air cushion that provides motion decoupling without requiring high assembly precision or mechanical contact, thereby eliminating structural deformation issues.
2Force
If aerostatic gas-floating system with air cavity is used, then loading capacity is improved, but pneumatic hammer phenomenon occurs and working frequency limit is reduced
Solution Approach 1:
The patent removes the air cavity component from the aerostatic bearing system, using only the gas holes drilled through the support plate. This extraction of the problematic air cavity element eliminates the pneumatic hammer phenomenon while maintaining the loading capacity through the aerostatic pressure generated by the gas holes, thereby extending the working frequency limit.
3Stability of the object's composition
If orifice restricted bearings are used, then gas film is formed, but loading capacity uniformity is poor due to orifice size and machining accuracy limitations
Solution Approach 1:
The patent replaces the orifice-restricted bearing design with a porous plate structure where gas flows through the porous material. This approach eliminates the need for precise orifice machining, as the porous structure naturally provides uniform gas distribution across the bearing surface, achieving both gas film formation and loading capacity uniformity without being constrained by machining accuracy limitations.
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 proposed solution provides high loading capacity, stability, and uniformity in motion decoupling, reducing the 'pneumatic hammer' phenomenon and preventing tilting or rotation of the vibration platform, while ensuring efficient vibration transmission and reduced assembly complexity.
Implementation Method 1
aerostatic gas-floating decoupling devices with porous restrictors and air springs, allowing for uniform gas film generation between the vibration platform and vibrators
Implementation Method 2
aerostatic gas-floating decoupling devices with porous restrictors and air springs
Data Source
Figure 1~3
Figure 4~6
AI summary
The three-dimensional standard vibrator based on the aerostatic gas-floating decoupling device contains a base. The base is installed with a X axis vibrator, a X axis return mechanism, a Y axis vibrator, a Y axis return mechanism, a Z axis vibrator, and a three-dimensional vibration platform. The X axis vibrator and the X axis return mechanism are both installed along X axis but separated by the three-dimensional vibration platform. The Y axis vibrator and the Y axis return mechanism are both installed along Y axis but also separated by the three-dimensional vibration platform. There are two aerostatic gas-floating plates corresponding to the vibrator and connecting to the X axis and Y axis vibrators, respectively. Two intervals used to generate gas films are formed between the two aerostatic gas-floating plates and the three-dimensional vibrator, respectively. The X axis and Y axis return mechanisms both consist of a reset spring and an aerostatic gas-floating plate corresponding to the spring. The Z axis vibrator is connected with the Z axis aerostatic gas-floating decoupling device. There are intervals used to form gas films between the Z axis aerostatic gas-floating decoupling device and the three-dimensional vibration platform. The present invention contains the advantages of high loading capacity, supporting stability and uniformity.