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Method for establishing three-dimensional coordinate system of large test equipment

A large-scale experiment, coordinate system technology, applied in the direction of measuring devices, instruments, measuring instrument components, etc., to achieve the effects of good stability, high precision, and simple implementation structure

Inactive Publication Date: 2011-06-15
SHANGHAI AEROSPACE SYST ENG INST
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Problems solved by technology

[0004] In order to solve the problems of accurate control, measurement and adjustment of large-scale equipment, and ensure the position accuracy of experimental equipment, the purpose of the present invention is to provide a method for establishing a three-dimensional coordinate system for large-scale experimental equipment; using the present invention, establish a three-dimensional coordinate system for large-scale experimental equipment , to solve the problems of large-scale test equipment control, measurement, and benchmark adjustment

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  • Method for establishing three-dimensional coordinate system of large test equipment
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  • Method for establishing three-dimensional coordinate system of large test equipment

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Embodiment Construction

[0015] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0016] The accompanying drawing is a coordinate system structure diagram of a certain large-scale test equipment. The present invention uses the six-degree-of-freedom Stewart platform with a lower hinge distribution circle of 7.4 meters as an example to illustrate the implementation steps of the present invention.

[0017] As shown in the drawings, the six-degree-of-freedom Stewart platform coordinate system includes: three datum seats 1 at the trisection of the annular base; and a coordinate datum 2 at the center of the annular base.

[0018] A method for setting up a three-dimensional coordinate system of large-scale test equipment in the present invention comprises the following steps:

[0019] (1) Set the datum plane A at the inner center positions of the three datum seats 1 of the annular base; set the measuring datum hole at the central position ...

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Abstract

The invention relates to large comprehensive test equipment, and discloses a method for establishing a three-dimensional coordinate system of large test equipment. The method comprises the following steps of: (1) setting a reference surface A and a measurement reference hole; (2) adjusting the reference surface A of a reference seat [1] to level and equal height; (3) pouring a fixed base; (4) adjusting the measurement reference hole of a coordinate reference [2] to the right center of the base and adjusting the upper surface to close to absolute level; and (5) determining the original point of the coordinate system by using the measurement reference hole, forming the X axis of the coordinate system by using three coplanar normal lines of the reference surface A, and projecting the connecting line of the measurement reference hole and one point of the A in the surface A as the Y axis so as to finish the establishment of the three-dimensional coordinate system. The method can guarantee position precision of the large test equipment, and has the advantages of simple implementation structure, good stability, high precision and the like.

Description

technical field [0001] The invention relates to large-scale comprehensive test equipment, in particular to a method for establishing a three-dimensional coordinate system of large-scale test equipment. Background technique [0002] At present, many large-scale test equipment and mechanical equipment such as large-scale comprehensive test equipment have high position accuracy requirements, especially large-scale parallel mechanisms. To achieve high-precision position control, the control parameters need to have precise control reference points and measurement reference points , so as to obtain accurate control datum points and measurement datum points need to have corresponding datums. [0003] At present, there is no report on the method of accurate control, measurement, adjustment, and establishment of a three-dimensional coordinate system of this large-scale equipment parallel mechanism. Contents of the invention [0004] In order to solve the problems of accurate contr...

Claims

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Application Information

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IPC IPC(8): G01D11/00
Inventor 李洪波
Owner SHANGHAI AEROSPACE SYST ENG INST
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