Optimization method for angle measurement eccentric errors of collimators

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...

AI Technical Summary

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 rotation period, so the different angle measurement results of the two grating reading heads will lose their guidance. Significance, so the eccentricity error still exists, which seriously affects the angle measurement accuracy

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