Laser tracking measurement system having spherical revolution bounce error compensation function and compensation method thereof

Abstract

The invention discloses a laser tracking measurement system having the spherical revolution bounce error compensation function and a compensation method thereof. The laser tracking measurement system comprises a horizontal rotary table; a support is installed on the horizontal rotary table; and a spherical revolution mechanism is installed at the support. The spherical revolution mechanism includes a standard ball, a support plate with an opening at the center, a first displacement sensor, a second displacement sensor, and a laser head; the standard ball is arranged at the center of the support; the central opening of the support plate passes through the standard ball and then is installed at the support; the first displacement sensor and the second displacement sensor are arranged at a reversed extension line of a laser beam emitted by the laser head and are respectively arranged at the two sides of the standard ball. The standard ball is not contacted with the support plate because of the location at the center of the spherical revolution mechanism and the distance between the sphere center and the target point is obtained precisely based on the measurement value and the calibration value, so that the spherical revolution bounce error of the spherical laser tracking mechanism is compensated and thus the good measurement precision can be realized under the circumstances that the revolution bounce of the laser tracking mechanism is high.

Description

technical field [0001] The invention relates to the field of laser tracking measurement, in particular to a laser tracking measurement system with the function of compensating spherical gyration runout errors. Background technique [0002] In the manufacturing process of large-scale equipment such as aircraft, water turbines, wind turbines, and solar panels, it is necessary to accurately measure the size of the parts in production and the pose during assembly. [0003] Among the currently used large-scale measuring equipment, laser tracking measurement equipment has been widely used in industrial production due to its high precision and wide measurement range. Laser tracking measurement mainly includes spherical coordinate measurement method and multilateral distance method. In the coordinate measurement method, the angle error in the measurement process will be enlarged proportionally with the increase of the measurement distance; in the multilateral distance measurement me...

AI Technical Summary

Problems solved by technology

However, when the interferometric accuracy is determined during the multilateral measurement process, the spherical gyration runout error of the tracking mechanism that changes the laser beam pointing will introduce a large error into the final distance measurement

In traditional laser tracking measurement equipment, the spherical rotation accuracy of the laser tracking measurement mechanism is highly required, and the processing and manufacturing are difficult and costly.

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