Vibrating Element Gyro Sensor Suspension and Wiring Segmentation
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Solution Overview
Problem
Existing vibrating elements in gyro sensors face limitations in maximizing the motion of detection arms due to insufficient support and significant electrostatic coupling between drive and detection wires, leading to degraded noise and temperature characteristics.
Innovation Solution
A vibrating element design that incorporates a base portion supported by at least three suspension arms, with the drive and detection arms separated to reduce electrostatic coupling, and additional features like grounding terminals for shielding, allowing for enhanced support and reduced electrostatic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the base portion is supported by a pair of suspension arms penetrating the center of gravity, then the structure is simple, but the motion of the detection arm cannot be maximized
Solution Approach 1:
The support structure is segmented into multiple suspension arms (at least three) distributed around the base portion, with each arm providing independent support. This segmentation allows the detection arm to achieve greater motion amplitude while maintaining structural stability, resolving the contradiction between simple structure and detection accuracy.
2Device complexity
If both drive and detection wires are laid in the same suspension arm, then the wiring is simplified, but electrostatic coupling between wires increases
Solution Approach 1:
The wiring is segmented by distributing drive and detection wires to different suspension arms. This spatial segmentation reduces electrostatic coupling between wires while maintaining wiring simplicity, as each suspension arm carries only one wire type.
Solution Approach 2:
The wire arrangement transitions from a two-dimensional planar layout (both wires in the same arm) to a three-dimensional distributed layout (wires in different arms around the base), reducing electrostatic coupling through increased spatial separation.
3Measurement precision
If the base portion is supported by multiple suspension arms, then detection accuracy improves, but the structure becomes more complex
Solution Approach 1:
Multiple suspension arms are merged into a unified support system that collectively provides both structural stability and enhanced detection capability. The arms work together as an integrated system, achieving improved performance 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
This design amplifies the motion of detection arms, improves detection accuracy, and significantly reduces electrostatic coupling, resulting in improved signal-to-noise ratio and overall performance of the gyro sensor.
Implementation Method 1
vibration is excited by the vibrating arm for driving. At this point, if angular velocity motion is applied to the vibrating element, a Coriolis force acts to change the direction of vibration of the vibrating arm for driving
Implementation Method 2
a Coriolis force acts to change the direction of vibration of the vibrating arm for driving. A new force component is generated in a specific direction corresponding to the Coriolis force
Implementation Method 3
both a wire of a drive system and a wire of a detection system are laid in the pair of suspension arms and therefore large electrostatic coupling between the two wires is generated
Data Source
AI summary
A vibrating element includes first and second pairs of vibrating arms extending in opposite directions from a base. A pair of first suspension arms extends from the base via first connecting parts and are connected to a fixed portion attached to a container for the vibrating element so that the base, the pair of first suspension arms and the fixed portion surround the pair of first vibrating arms. A pair of second suspension arms extends from the base via second connecting parts and are connected to the fixed portion so that the pair of second suspension arms is located outside of the pair of first vibrating arms and the pair of first suspension arms.