MEMS Gyroscope Coupling Structure for Anti-Interference Stability
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Solution Overview
Problem
MEMS gyroscopes suffer from weakly coupled mass blocks, leading to inconsistent displacement ratios and reduced anti-interference performance.
Innovation Solution
Implementing a strong coupling mechanism between first and second mass blocks using coupling links and connecting beams, ensuring stable connection and improved redundancy, while allowing differential detection to enhance anti-interference capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If weak coupling is used between mass blocks, then the structure is simpler, but the displacement ratio cannot be guaranteed and anti-interference performance is reduced
Solution Approach 1:
The patent changes the coupling strength parameter by introducing coupling beams with specific stiffness characteristics. The coupling beams are designed to provide strong coupling between mass blocks while maintaining the necessary flexibility for differential detection, thereby ensuring consistent displacement ratios without excessive structural complexity
Solution Approach 2:
The coupling beams serve as intermediary elements between the mass blocks. These beams mediate the mechanical connection, providing controlled coupling strength that ensures consistent displacement ratios while allowing the system to maintain simplicity through a standardized intermediary component design
2Ease of manufacture
If weak coupling is used between mass blocks, then the device is easier to manufacture, but the anti-interference performance deteriorates
Solution Approach 1:
The patent adjusts the coupling strength parameter through careful design of coupling beam dimensions and material properties. This enables strong coupling to improve anti-interference performance while maintaining manufacturing ease through standard fabrication processes for the coupling beams
Solution Approach 2:
The coupling mechanism is segmented into discrete coupling beams that can be independently designed and manufactured. This segmentation allows for standardized production of the coupling elements, maintaining ease of manufacture while achieving strong coupling through the collective effect of multiple identical or standardized segments
3Reliability
If strong coupling is implemented between mass blocks, then the anti-interference performance and working stability are improved, but the device complexity increases
Solution Approach 1:
The coupling beams serve multiple functions: they provide strong coupling between mass blocks, enable differential detection, and maintain structural integrity. This multi-functionality achieves improved anti-interference performance without proportionally increasing device complexity, as the same components fulfill multiple roles in the system
4Stability of the object's composition
If strong coupling is implemented between mass blocks, then the working stability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent optimizes the coupling beam parameters (dimensions, material properties) to achieve strong coupling with reasonable manufacturing precision requirements. By carefully selecting beam cross-sectional dimensions and material characteristics, the system achieves working stability without demanding excessive precision in the coupling connection fabrication
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 strong coupling design enhances the anti-interference performance and working stability of the MEMS gyroscope, improving its service performance by widening the frequency difference between working and interference modes.
Implementation Method 1
the connecting beams are flexible beams, the coupling part is positioned between the first mass blocks and the second mass block and connects the first mass blocks with the second mass block
Implementation Method 2
When an angular velocity is applied, the gyroscope transfers energy to a detection mode under the Coriolis effect, which makes the mass block swing out of the plane under relative driving
Data Source
AI summary
The present invention provides an MEMS gyroscope and an electronic product. The MEMS gyroscope comprises a plurality of first mass blocks, a second mass block and coupling parts, wherein the plurality of first mass blocks are located at two opposite sides of the second mass block in a first direction; and each coupling part comprises a coupling link and a plurality of connecting beams connected to two ends of the coupling link, the connecting beams are flexible beams, and the coupling part is positioned between the first mass blocks and the second mass block and connects the first mass blocks with the second mass block. Through the arrangement of the coupling links, strong coupling can be realized between the first mass blocks and the second mass block, so that the anti-interference performance of the MEMS gyroscope is enhanced during work and the working stability is improved.