Three-component force measurement sensor

Abstract

The invention discloses a three-component force measurement sensor which is composed of an elastic body and a strain gauge. The elastic body is composed of a fixed end on the inner side of the circumference, a loading end on the outer side of the circumference and strain beams connected between the fixed end and an annular gap of the loading end. The four strain beams are distributed in the annular gap up, down, left and right; each strain beam is provided with four patch surfaces of a first axial patch surface and a second axial patch surface which are symmetrical along the axial direction, and a first circumferential patch surface and a second circumferential patch surface which are symmetrical in the radial direction; the pasting directions of the two strain gauges on the same patch surface point to the outer side of the circumference from the circle center of the sensor, and the strain gauges are correspondingly pasted on the patch surfaces of the strain beams in pairs so as to achieve stress in the horizontal radial direction, the vertical radial direction and the axial direction; and the strain gauges in the same component force direction are measured and are electrically connected to form a Wheatstone full-bridge circuit. The three-component force measurement sensor is high in sensitivity, small in inter-dimensional coupling degree and high in measurement precision.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a three-component force measuring sensor. Background technique [0002] With the rapid development of China's economy, the automobile industry has made great progress and improvement. In terms of industrial scale, it has already become a veritable manufacturing powerhouse. However, the situation of being big but not strong has not been effectively improved. Independent automobile production and research and development The ability is still weak, and the technology of commercial vehicle dynamics testing, theory and application is seriously lagging behind that of passenger vehicles. [0003] At present, there are many studies on three-component force measurement sensors abroad, and the United States, Germany, Switzerland, Japan, etc. have all produced sensor products. Domestically, there is little knowledge of the three-component force sensor technology, there is no co...

AI Technical Summary

Problems solved by technology

[0005] The three-component force measurement sensor is the most widely used type of multi-dimensional force sensor. However, the sensor will produce certain crosstalk problems during use, which will greatly affect the measurement accuracy of the sensor.

[0007] The existing technologies represented by the above-mentioned patent documents generally have the defects of complex structure, difficult processing, low rigidity and small measurement loading range. More importantly, there is a problem of coupling crosstalk between different measurement dimensions of the sensor, which affects the sensor. measurement accuracy

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