Micro-Mechanical Gyroscope Layout to Reduce Mode Coupling Errors
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Solution Overview
Problem
Micro-mechanical gyroscopes suffer from detection errors due to the coupling of detection and driving modes, which share a mass block, leading to interference and reduced accuracy.
Innovation Solution
A micro-mechanical gyroscope design featuring multiple mass blocks and flexible coupling components, arranged in specific directions and configurations to minimize interference between modes, including symmetric arrangements and flexible connections for reduced coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the detection mode and driving mode share a mass block, then the structure is simplified and manufacturing is easier, but detection accuracy deteriorates due to superposition of detection errors
Solution Approach 1:
The patent divides the mass block into multiple independent mass blocks (first mass block and second mass block) with separate driving members and detection members. This segmentation isolates the detection and driving functions to different physical components, eliminating the mode coupling that occurs when sharing a single mass block, thereby improving detection accuracy while maintaining manufacturing feasibility through modular assembly
2Measurement precision
If multiple mass blocks and driving members are used to reduce mode coupling, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple mass blocks, driving members, and detection members into an integrated micro-mechanical gyroscope structure where all components are fabricated using the same micro-mechanical processing technology. The flexible coupling components connect these elements in a unified assembly that maintains structural compactness while achieving the desired separation of detection and driving modes, thus improving accuracy without proportionally increasing complexity
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
Enhances detection accuracy by minimizing mutual interference between modes, improving sensitivity and stability, and enabling small-scale integration with reduced costs.
Implementation Method 1
first coupling components and second coupling components being flexible components
Implementation Method 2
When being applied an angular velocity, due to the Coriolis effect, the gyroscope transfers energy to the detection mode, causing the vibrating disk to swing out of the plane under relative drive. The angular velocity can be acquired by detecting the displacement of the out-of-plane oscillation.
Data Source
AI summary
The present disclosure provides a micro-mechanical gyroscope and an electronic product. The micro-mechanical gyroscope includes first mass blocks, second mass blocks, a first driving member, a second driving member, first coupling components and second coupling components. The second mass blocks, the first driving member and the second driving member are arranged between the first mass blocks. The second mass blocks are arranged on either sides of the first second driving members. A first mass block arranged on a side of the first driving member is connected to the first driving member through a first coupling component, and a first mass block arranged on a side of the second driving member is connected to the second driving member through a first coupling component. Ends of the second mass block in the first direction are connected to the first driving member and the second driving member, respectively, through the second coupling components.