Yaw Rate Sensor Coupling Structure for Antiparallel Oscillation
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Solution Overview
Problem
Conventional rotation rate sensors face challenges in maintaining antiparallel oscillating motions of oscillating masses, leading to incorrect rotation rate measurements due to deviations from desired motion, which is labor-intensive and costly to manufacture.
Innovation Solution
The coupling structure employs angle elements with specific orientations and flexural springs to convert linear antiparallel motions into rotary motions, ensuring reliable antiparallelism and economical drive systems, allowing for precise Coriolis force-based rotation rate measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional drive system is used to excite oscillating masses, then the device can be manufactured with simpler components, but the antiparallelism of oscillating motions cannot be reliably maintained
Solution Approach 1:
The patent introduces a coupling structure as an intermediary mechanism between the drive system and oscillating masses. This coupling structure includes coupling elements that convert drive motions into reliable antiparallel oscillating motions of the masses, mediating the interaction between the simple drive system and the precision requirement for antiparallelism.
Solution Approach 2:
The patent replaces complex mechanical adjustment mechanisms with a coupling structure based on flexural elements and geometric constraints. The coupling structure uses flexible beams and articulated connections to automatically establish and maintain antiparallel oscillation patterns without requiring precision mechanical adjustments.
2Manufacturing precision
If manufacturing adjustments are made to achieve antiparallelism, then oscillation accuracy improves, but manufacturing complexity and cost increase
Solution Approach 1:
The coupling structure is designed to self-establish the antiparallel oscillation pattern through its geometric configuration and flexible element properties. The structure automatically compensates for manufacturing tolerances and does not require external adjustment mechanisms, making the system self-configuring and eliminating complex adjustment procedures.
Solution Approach 2:
The patent changes the fundamental parameters of the oscillation system by introducing flexible coupling elements with specific stiffness characteristics and geometric constraints. These parameter changes enable the system to achieve precise antiparallel oscillations through its structural properties rather than through manufacturing adjustments of traditional mechanical components.
3Measurement precision
If precision drive systems are used to maintain antiparallelism, then measurement accuracy improves, but device complexity and cost increase
Solution Approach 1:
The coupling structure serves as an intermediary that decouples the measurement accuracy requirement from the drive system complexity. It transforms simple drive motions into precise antiparallel oscillations, allowing accurate Coriolis force measurement without requiring complex precision drive mechanisms.
Solution Approach 2:
The patent segments the function of maintaining antiparallelism from the drive system itself and places it in the coupling structure. This segmentation allows the drive system to remain simple while the coupling structure handles the precision function, separating the complexity requirements from the measurement function.
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 solution effectively maintains antiparallelism between oscillating masses, enabling accurate rotation rate measurement while reducing manufacturing complexity and costs, ensuring reliable operation in rotation rate sensors.
Implementation Method 1
flexural springs to convert linear antiparallel motions into rotary motions
Implementation Method 2
Coriolis forces then act on the two oscillating masses as they oscillate. The Coriolis forces cause the two oscillating masses each to be deflected perpendicular to their oscillation direction
Data Source
AI summary
A coupling structure for a rotation rate sensor apparatus, having at least one first oscillating mass; and having a first frame, surrounding the first oscillating mass, to which the first oscillating mass is coupled; the first frame encompassing four angle elements, each of which angle elements has at least one first limb and one second limb and is respectively coupled with the first limb and with the second limb to another adjacent angle element of the four angle elements. Also described is a further coupling structure for a rotation rate sensor apparatus, to a rotation rate sensor apparatus, to a manufacturing method for a coupling structure for a rotation rate sensor apparatus, and to a manufacturing method for a rotation rate sensor apparatus.