Force and torque sensors

Patent metadata

Field	Value
Publication number	US-8943902-B2
Application number	US-201213645568-A
Country	US
Kind code	B2
Filing date	Oct 5, 2012
Priority date	Oct 5, 2012
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

Force and torque sensors ( 10, 10 a ) include a load-bearing element ( 12 ), and strain gauges ( 20, 22, 23 ) mounted on the load-bearing element ( 12 ) so that the strain gauges ( 20, 22, 23 ) generate outputs responsive to external forces and moments applied to the load-bearing element ( 12 ). The strain gauges ( 20, 22, 23 ) are configured, and the responsive outputs of the strain gauges ( 20, 22, 23 ) are processed such that the force and moment measurements generated by the sensors ( 10, 10 a ) are substantially immune from drift due to thermally-induced strain in the load-bearing element ( 12 ).

First claim

We claim:

1. A sensor for measuring forces and torques, comprising:
a load-bearing member having a longitudinal axis extending in a first direction;
a plurality of strain gauges including first and second strain gauges mounted on a surface of the load-bearing member; where
the first and second strain gauges are symmetrically disposed about a line of symmetry on the surface of the load-bearing member, the line of symmetry extending substantially in the first direction, and
a s…

Assignees

• Harris Corp

Inventors

• Bosscher Paul M
• Summer Matthew D
• Rust John B
• Murphy-Dubay Nicholas
• Bowman William S
• Wilkinson Loran J

Classifications

• G01L5/226 Primary

  Physics · mapped topic

• G01L1/2281

  Physics · mapped topic

• G01L5/1627

  Physics · mapped topic