Error measurement and compensation method for multi-target two-dimensional cross motion simulation system
A motion simulation and system error technology, applied in the field of error measurement and compensation, can solve the problems of the positioning accuracy not meeting the requirements and the inconsistency of multiple target motion coordinate systems.
Inactive Publication Date: 2013-05-01
HARBIN INST OF TECH
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[0005] The main purpose of the present invention is to provide a multi-target two-dimensional cross motion simulation system error measurement compensation method to solve the problems of inconsistent motion coordinate systems of multiple targets and positioning accuracy that cannot meet the requirements. It is a visual measurement based on triangular intersection. Principle and Theoretical Error Measurement Compensation Method of RBF Neural Network
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[0038] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.
[0039] The error measurement and compensation method of the multi-objective two-dimensional cross motion simulation system of the present invention is realized by the following steps:
[0040] Step 1. Use the triangular intersection method to build a three-dimensional measurement system for spatial coordinate points through two theodolites, and design experiments based on the schematic diagram of the optimal measurement range to realize the three-dimensional position coordinate measurement of spatial points. The formula is:
[0041] x = O A ′ cos α = ...
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The invention discloses an error measurement and compensation method for a multi-target two-dimensional cross motion simulation system. The method comprises the following steps of: a, constructing a three-dimensional measurement system based on the double theodolite of intersection measuring principle for a space coordinate point and thus realizing three-dimensional position coordinate measurement of the space point; b, fitting a target motion plane by using an acquired three-dimensional position coordinate and thus obtaining a target motion reference coordinate system; c, performing coordinate conversion on the measured point and thus obtaining an image plane coordinate; d, calculating to obtain a position error of each sampling point on the target motion plane according to the image plane coordinate; and e, compensating the position error by using a radial basis function (RBF) nerve network. The theory of the whole method is simple, the calculation quantity is low, and the complicated math relation deduction is avoided, so the method is easy to implement and the practicability is higher.
Description
technical field [0001] The invention relates to an error measurement and compensation technology applicable to a plurality of target large-scale intersecting two-dimensional motion systems, in particular to a position error measurement and compensation method applied to a plurality of target coordinate systems. Background technique [0002] As the key equipment for target motion simulation, the target motion simulation system can not only provide comprehensive testing and physical simulation for the research object by reproducing the target’s motion track and simulating the motion characteristics of the target, but also can be used as a high-level instrument for various measuring instruments or precision equipment. Accuracy calibration and calibration instruments. In recent years, most of the target motion systems researched in China can only provide a single target, and cannot realize multi-target two-dimensional motion; and a few multi-target motion systems have problems s...
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IPC IPC(8): G01B21/00G01D18/00
Inventor 霍炬杨明关钰刘云鹤
Owner HARBIN INST OF TECH