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Multi-component force sensor

A force sensor, multi-component technology, applied in the field of component force devices, can solve the problems of poor isotropy of cross beam structure, unfavorable dynamic measurement, large number of strain gauges, etc. Effect

Inactive Publication Date: 2008-07-02
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Piezoelectric sensors are small in size, high in sensitivity, but small in range, and are usually used for load measurement of light structures
Strain-type multi-component force sensors mainly include cross-beam structure, STEWART platform structure and vertical beam structure. Friction and structural play in the hinged fit, which is not conducive to dynamic measurements
The vertical beam structure has the characteristics of good horizontal effect and poor vertical effect, and the structure is more complicated

Method used

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings. Referring to Fig. 1 to Fig. 3, the present invention provides a multi-component force sensor with a thin-walled cylinder structure. There are flanges 2 at both ends of the thin-walled cylinder 1. The flange 2 and the thin-walled cylinder 1 can be integrated or connected in other ways. . Mounting holes 3 are provided on the flange 2 to facilitate assembly with other parts. The mounting holes 3 can be plain holes or threaded holes. There are at least four mounting holes 3 .

[0020] The wall of the thin-walled cylinder 1 is pasted with resistance strain gauges and temperature compensation strain gauges, R11, R12, R21, R22, R31, R32, R33, R34, R35, R36, R37, R38, R41, R42, R51, R52, R61, R62, R63, R64 are resistance strain gauges, R 0 for temperature compensating strain gauges. The position and method of attaching the strain gauges are as follows: divide the th...

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Abstract

The invention provides a strain type force measuring device, more particular a sensor capable of simultaneously measuring component forces of a non-coplanar force at 6 different degree-of-freedom directions. Flanges (2) are arranged at the two ends of a thin-walled cylinder (1) and opened with mounting holes (3), an electric resistance strain gage and a temperature compensation strain gage are adhered on a specific position of the wall of the thin-walled cylinder (1) with a specific manner, and the electric resistance strain gage is bridged. The invention has the advantages of uniform radial mechanical properties, good longitudinal stability, simple structure, light weight, low inertia, no intervals and frictional force, high measurement accuracy and wide application range; and is suitable for measuring either small load and high load with large structure.

Description

technical field [0001] The invention relates to a device for measuring the component force of the force along the three axes of the Cartesian coordinate system in space, especially the elastic deformation of the thin-walled cylinder under the force is measured by using the resistance strain gauge, which can be obtained through calibration conversion measurement A device that measures the magnitude and direction of an applied force. Background technique [0002] A multi-component force sensor refers to a force sensor that can measure force and moment components in more than two directions at the same time. In the Cartesian coordinate system, force and moment can be decomposed into three components respectively. Therefore, the most complete form of multi-component force is multi-component Force / torque sensor, that is, a sensor capable of simultaneously measuring three force components and three torque components. [0003] Multi-component force sensors are widely used in load ...

Claims

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Application Information

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IPC IPC(8): G01L1/22
Inventor 刘续兴赵翔马昆
Owner CHINA HELICOPTER RES & DEV INST
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