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Six-dimensional force transducer calibration device

A six-dimensional force sensor and calibration device technology, applied in the field of sensor calibration, can solve problems such as errors, affecting the accuracy of calibration devices, installation errors, etc., and achieve the effects of high precision, simple structure, and reduced calibration errors

Inactive Publication Date: 2014-12-24
DALIAN JIAOTONG UNIVERSITY
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  • Abstract
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Problems solved by technology

The device is capable of continuous loading with great force, but installation errors occur due to repeated movement of the active unit position
The Chinese patents disclosed above all have a disadvantage: it is necessary to move the weight or the movable unit to realize the loading of multi-dimensional force. For the calibration device, this result will inevitably cause errors in the calibration process, which will greatly affect Accuracy of Calibration Device

Method used

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the patent of the present invention is further described.

[0024] figure 1 and figure 2 Shown are respectively the three-dimensional structure schematic diagram and the top view of the present invention. The six universal hinges on the base 1 form a group of two with a certain distance and are evenly distributed with the other two groups on the base 1 at a distance of 120 degrees. The axis of the pin hole of the universal joint is along the normal direction of the base. The axis of the base 1 and the sensor fixing platform 7 coincide and are rigidly connected together. The six universal hinges on the calibration work platform 4 are divided into two groups with a certain distance and evenly distributed with the other two groups at a distance of 120 degrees. The axis of the pin hole of the universal joint is along the normal direction of the base. The three sets of universal hinges on the calibration work platform 4 ...

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Abstract

The invention discloses a six-dimensional force transducer calibration device which comprises a base, a sensor fixing platform, a calibration operation platform, an upper three-jaw chuck, a lower three-jaw chuck, electric push cylinders, standard one-way force sensors and universal hinges. The calibration operation platform, the electric push cylinders, the universal hinges and the base form a Stewart platform structure. By the adoption of the Stewart platform structure, a Stewart platform can perform any spatial movement in the Stewart structure, loading of any spatial force can be realized, sensors or loading force sources do not need to move, and calibration error generated from moving of the sensors or the loading force sources is decreased. The electric push cylinders serve as the loading force sources, and automatic, continuous and highly accurate loading can be realized. Date measured by the six standard one-way force sensors and data outputted by calibration sensors are subjected to comparative analysis, and the standard one-way force sensors are high in accuracy and can accurately calibrate performance of the six-dimensional force sensors.

Description

technical field [0001] The invention relates to a sensor calibration technology, in particular to a six-dimensional force sensor calibration device. Background technique [0002] For the calibration of the six-dimensional force sensor, the output of the force sensor is obtained by loading the standard force on the six-dimensional force sensor, and the relationship between the output and the input is established. The accuracy of the calibration device directly affects the measurement accuracy of the six-dimensional force sensor, so it is of great practical significance to design a calibration device with high calibration accuracy, simple structure, and easy operation. [0003] At present, domestic calibration methods for multi-dimensional force sensors mainly include force-measuring ring, weight, and gantry calibration methods. Among them, the force-measuring ring calibration device adopts the ejector rod method, and the deformation is read from the reading of the dial indic...

Claims

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Application Information

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IPC IPC(8): G01L25/00
Inventor 林盛杨亮王春王道永
Owner DALIAN JIAOTONG UNIVERSITY
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