Torque Sensor Strain Gage Stiffness Design

The patent applies local quality by creating non-uniform stiffness distribution within the fourth structure. Specifically, the connection sections (first and second connection sections) are designed with higher stiffness to resist deformation in torque-excepted directions, while the intermediate section maintains lower stiffness to allow controlled deformation in the torque direction. This localized differentiation of mechanical properties enables the structure to selectively respond to torque while rejecting other forces, achieving high detection accuracy without requiring overall structural enlargement.

The patent implements preliminary anti-action by designing the fourth structure with asymmetric stiffness characteristics that proactively counteract potential measurement errors before they occur. The connection sections are pre-engineered with higher stiffness to prevent deformation in torque-excepted directions, thereby preemptively eliminating the source of erroneous voltage output. This design approach compensates for machining inaccuracies and strain gage arrangement variations by making the structure inherently resistant to unwanted deformations, ensuring reliable and accurate torque detection despite manufacturing tolerances.

The patent applies segmentation by dividing the fourth structure into distinct functional sections: connection sections (first and second connection sections) with higher stiffness for structural support and error prevention, and an intermediate section with lower stiffness for controlled torque-induced deformation. This segmentation allows each part to perform its specific function optimally without requiring the entire structure to be overly rigid or complex, achieving high detection accuracy through localized structural differentiation rather than universal reinforcement.