Micro-Mechanical Gyroscope Layout to Reduce Mode Coupling Errors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Micro-mechanical gyroscopes suffer from detection errors due to the coupling of detection and driving modes sharing a mass block, leading to interference and reduced accuracy.
Innovation Solution
A micro-mechanical gyroscope design featuring first and second mass blocks arranged in different directions, connected by flexible beams, with separate driving members and transducers, reducing mode interference and enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the detection mode and driving mode share a mass block, then the device complexity is reduced, but detection accuracy deteriorates due to superposition of detection errors from mode coupling
Solution Approach 1:
The gyroscope structure is segmented into separate first mass blocks for driving mode and second mass blocks for detection mode. This segmentation eliminates the coupling between driving and detection modes, preventing detection errors while maintaining structural simplicity through the shared connecting beams.
2Measurement precision
If separate mass blocks are used for detection and driving modes, then detection accuracy is improved by reducing mode interference, but device complexity increases
Solution Approach 1:
The first and second mass blocks are connected through shared connecting beams (first connecting beams and second connecting beams), merging the driving and detection structures into a unified system. This reduces the overall device complexity while maintaining separate mass blocks to ensure detection accuracy.
3Measurement precision
If multiple mass blocks and connecting beams are used, then mode interference is reduced improving detection accuracy, but manufacturing complexity increases
Solution Approach 1:
The structure is segmented into modular components (first mass blocks, second mass blocks, first connecting beams, second connecting beams) that can be manufactured separately and then integrated, simplifying the manufacturing process while maintaining detection accuracy.
Solution Approach 2:
Multiple connecting beams are merged into a unified flexible support structure that provides both mechanical support and flexible coupling. This integration reduces the number of separate manufacturing steps while ensuring the structural integrity needed for accurate detection.
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 design minimizes mutual interference between mass blocks, improving detection accuracy and sensitivity while allowing for small-scale integration and reduced costs.
Implementation Method 1
first connecting beams and second connecting beams being flexible beams
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
Data Source
AI summary
The present disclosure provides a micro-mechanical gyroscope and an electronic product. The micro-mechanical gyroscope includes a plurality of first mass blocks, a plurality of second mass blocks, a plurality of driving members, first connecting beams and second connecting beams. The first mass blocks are arranged to face to each other in a first direction, and the second mass blocks are arranged between the first mass blocks and arranged to face to each other in a second direction perpendicular to the first direction. In the second direction, the driving members are arranged on either sides of the first mass blocks and of the second mass blocks. Ends of the first mass blocks in the second direction are connected to driving members, respectively, through the first connecting beams, and the second mass blocks are connected to adjacent driving members, respectively, through the second connecting beams 5.