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High-accuracy detection device for industrial robot

A technology of industrial robots and detection devices, which is applied in the direction of measuring devices, navigation through speed/acceleration measurement, instruments, etc., can solve the problems of large instrument volume, high instrument price, site and space constraints required for measurement, etc., and achieve small size , high reliability and stability

Inactive Publication Date: 2018-09-11
BEIJING UNIV OF TECH
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Problems solved by technology

[0003] However, my country still lacks high-precision attitude detection products for industrial robots, which limits the development of high-precision industrial robots in my country. The existing foreign industrial robot attitude detection instruments mainly include the Leica laser tracker AT960 and the unit correction system Dynacal of the American Dynalog company. It has the advantages of high measurement accuracy and fast speed, but at the same time, these two instruments are large in size, and the site and space required for measurement are also limited, which is not conducive to the on-site operation and measurement of industrial robots, and the price of the instruments is high.
At present, there is a lack of high-precision six-axis industrial robot posture detection invention, which shows the importance of the present invention

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Embodiment Construction

[0025] 1), such as figure 1 As shown, the inertial measurement device is installed on the inertial measurement device installation mechanism, and the sensors of the same type are installed orthogonally to each other, that is, the three acceleration sensors 3 are respectively installed on three orthogonal planes, and the fiber optic gyroscope 1 is respectively installed on the other three On an orthogonal plane; if it cannot be guaranteed that they are installed orthogonally to each other, the attitude calibration method is used to calibrate the sensor installation attitude. The calibration method is as follows:

[0026] The industrial robot 5 is controlled to move along its own coordinate axis through the teaching pendant of the industrial robot 5. Due to the inertial force existing in the movement, the readings of each axis of the inertial measurement sensor change, so that the corresponding coordinates of the industrial robot are calibrated by the corresponding sensor reading...

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Abstract

The invention discloses a high-accuracy detection device for an industrial robot. The high-accuracy detection device is characterized in that a plurality of detection devices are respectively arrangedaround the tail end of the industrial robot to be detected. An inertial measurement device is used for detecting the industrial robot to be an serial six-axis robot. The inertial measurement device consists of three single-axis accelerometer sensors and three single-axis optical-fiber gyroscope sensors, wherein the three single-axis accelerometer sensors acquire acceleration components of the tail end of the industrial robot in three directions of x axis, y axis and z axis respectively; the three single-axis optical-fiber gyroscope sensors acquire angular acceleration components of the tail end of the industrial robot in three directions of x axis, y axis and z axis respectively. The high-accuracy detection device for the industrial robot disclosed by the invention has the advantages thatby adoption of the inertial measurement system instead of the traditional laser tracking measurement system, the influence of environmental factors is less, and the reliability and the stability arehigher; by adoption of the inertial measurement system, the posture of the industrial robot can be randomly changed, so that the defect that the laser tracking measurement system needs to plan the posture and the track of the industrial robot to prevent laser so as to fail to real-time measurement is avoided.

Description

technical field [0001] The invention relates to the technical field of robot performance evaluation, in particular to an industrial robot posture detection instrument. Background technique [0002] A robot is a mechanical device that realizes various functional methods by its own power and control capabilities. Its task is to assist or replace the work of human work. The participation of industrial robots in industrial production can greatly guarantee product quality, shorten product production cycle, improve production efficiency and adapt to various complex labor conditions. As a kind of automation equipment, it is widely used in various fields of industrial production. As industrial robots are more and more widely used in aerospace, aviation, military, civil, etc., the requirements for the attitude accuracy of industrial robots are getting higher and higher. However, in China, the development of assembly automation in industrial production has been relatively slow in re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/18
CPCG01C21/00G01C21/18
Inventor 林家春徐岩李睿石照耀
Owner BEIJING UNIV OF TECH