Optimization method for angle measurement eccentric errors of collimators

An optimization method and eccentric error technology, applied in the field of collimators, can solve the problems of losing guiding significance and affecting the accuracy of angle measurement, so as to shorten the production cycle, reduce the difficulty of manufacturing and assembly, and achieve the effect of accurate solution

Inactive Publication Date: 2018-02-13
BEIJING INST OF SPACE LAUNCH TECH +1
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Problems solved by technology

However, due to the limitations of the structure and technology level, it is often difficult to ensure that the assembly positions of the two reading heads maintain a corresponding relationship of 180° in the entire grating ro

Method used

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  • Optimization method for angle measurement eccentric errors of collimators
  • Optimization method for angle measurement eccentric errors of collimators

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Embodiment Construction

[0038] The method for optimizing the angular eccentricity error of the collimator according to the present invention will be explained and illustrated in detail below in conjunction with the accompanying drawings.

[0039] Such as figure 1 As shown, the present invention discloses a method for optimizing the angular eccentricity error of a collimator. The optimization method includes the following steps. In this embodiment, the collimator can be a photoelectric collimator.

[0040] Parameter setting steps: take the first distance between the geometric center of the grating code disc and the axis of the rotating shaft as the eccentricity error of the grating code disc, and set the following parameters: measurement angle, actual rotation angle and radius, where the measurement angle is the grating The angle measured by the code disc, the actual rotation angle is the actual rotation angle of the rotating shaft, and the radius is the radius of the grating code disc.

[0041] Rela...

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Abstract

The invention discloses an optimization method for angle measurement eccentric errors of collimators. The optimization method includes a parameter setting step: setting parameters including eccentricerrors, measurement angles, actual rotation angles, radiuses and the like; a relation building step: building logic relations between the various parameters; a relation optimizing step: optimizing thelogic relations between the various parameters; a model generating step: utilizing the optimized logic relations between the various parameters as error correction models; an error optimizing step: measuring angles by the aid of the error correction models to optimize the angle measurement eccentric errors. The optimization method has the technical advantages that the mathematical models are built for the eccentric errors of optical grating code disks of the collimators, system defects can be overcome by the aid of digital optimization processing modes, accordingly, influence of the eccentricerrors on the instrument precision and performance can be reduced, and the measurement precision of the collimators can be enhanced; the manufacturing and adjusting difficulty of the optical gratingcode disks can be lowered, the production cycles can be shortened, and the like.

Description

technical field [0001] The invention relates to the technical field of collimators, and more specifically, the present invention relates to a method for optimizing the angle eccentricity error of a collimator. Background technique [0002] The photoelectric collimator is an automatic and high-precision optical instrument integrating light, mechanics, electricity and calculation. On the basis of the electronic and intelligent optical theodolite, the optical instrument adopts electronic subdivision technology and control processing technology. And filtering technology, so as to realize the intelligence of the measurement reading. [0003] The working principle of the photoelectric collimator is: use the analog device installed on the grating code wheel to measure the angle in real time. However, in the actual product assembly process, due to the influence of mechanical processing, assembly level and other factors, the assembly eccentricity of the grating code disc is often ca...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 范毅解英梅宋小艳韩大程何欢李志强狄世超
Owner BEIJING INST OF SPACE LAUNCH TECH
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