A Calibration Method of Digital Chemical Equipment Aircraft Coordinate System Based on Temperature Compensation
A technology of temperature compensation and coordinate system, applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as poor temperature stability, achieve the effects of improving accuracy, improving calibration accuracy, and compensating for coordinate deviation
Active Publication Date: 2022-07-12
XI'AN AIRCRAFT INTERNATIONAL
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Problems solved by technology
[0003] In order to solve the problem of poor temperature stability when calibrating the coordinate system of digital chemical equipment and aircraft, a calibration method of digital chemical equipment and aircraft coordinate system based on temperature compensation was invented
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[0066] figure 1 It is a schematic diagram of the calibration of the aircraft coordinate system of the digital chemical equipment. The digital chemical equipment is about 6 meters long, about 3.3 meters high, and about 2.6 meters wide. The object is the aircraft side wall panel 4. Since the side wall panel 4 of the aircraft is enclosed by the rectangular frame of the digital equipment 1, and the length of the rectangle is greater than the height, the ERS1 point in the ERS basic point group composed of a plurality of ERS points 2 is set at the lower left of the rectangular frame, The ERS2 point in the ERS basic point group is placed in the lower right of the rectangular frame, and the ERS3 point in the ERS basic point group is placed in the upper left of the rectangular frame. Due to the large size of the digital tooling, an ERS enhanced point group is also set up, so that the distance between the ERS points in the ERS enhanced point group is controlled at about 1.5 meters, and...
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The invention discloses a method for calibrating the coordinate system of a digital tooling aircraft based on temperature compensation. According to the obtained coordinates of the ERS point group relative to the CAD global coordinate system and the coordinates relative to the coordinate system of the measuring equipment, the tooling coordinate system and the aircraft coordinate system are constructed. and the relationship between the equipment coordinate system and the tooling coordinate system, construct the coordinates based on the ERS point group relative to the aircraft coordinate system at the ambient temperature, and then construct the transformation relationship between the ERS point group coordinates at the ambient temperature and the reference temperature. The coordinates of the ERS point group relative to the aircraft coordinate system at the reference temperature are calibrated into the digital tooling.
Description
technical field [0001] The present application relates to the field of aircraft digital measurement, in particular to a temperature compensation-based calibration technology for a digitalized aircraft coordinate system. Background technique [0002] The aircraft coordinate system of the digital equipment is the benchmark for digital assembly and inspection of the aircraft. The digital equipment is provided with a measurement point group - ERS point group, and the digital equipment uses the coordinates of the ERS point group to calibrate the aircraft coordinate system. As the benchmark for digital manufacturing and inspection of aircraft, the digital aircraft coordinate system requires long-term stability, and temperature changes are an important factor affecting long-term stability. For a new generation of aircraft, the position and attitude deviation of the digital aircraft coordinate system cannot exceed 0.2mm. However, all digital equipment has the characteristics of the...
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IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 巴晓甫王新峰刘航刘若璇
Owner XI'AN AIRCRAFT INTERNATIONAL