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Online measurement system and method for plane shape errors

A technology of plane shape and measurement system, which is applied in the direction of electromagnetic measuring device, electric/magnetic contour/curvature measurement, etc. It can solve the problems of increased calculation amount, measurement method unable to measure irregular plane and discontinuous plane, impractical and other problems

Inactive Publication Date: 2013-01-02
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

When measuring a plane with a large area or densely distributed sampling points, the amount of computation will increase to an unrealistic level, and the measurement method cannot measure irregular and discontinuous planes

Method used

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  • Online measurement system and method for plane shape errors
  • Online measurement system and method for plane shape errors
  • Online measurement system and method for plane shape errors

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Embodiment Construction

[0102] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 5 As shown, the eddy current displacement sensor array 4 is fixed on the machine tool table 3 through the sensor fixture 2, and each eddy current distance sensor 1 is connected with a sensor front end 5, and the sensor front end 5 is responsible for driving the eddy current distance sensor 1 and convert the distance value measured by the corresponding eddy current distance sensor 1 into a voltage signal of -10V~+10V. The sensor front end 5 is connected to the data acquisition and analog-to-digital conversion module 7, which is based on the embedded system design of the DSP processor 8. This module includes functions such as data acquisition control, analog-to-digital conversion, and shape recognition of the measured surface 13. The four-way voltage signals output by the sensor front-end device 5 are respectively input to the DSP processor 8 after analog-t...

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Abstract

The invention discloses an online measurement system and a method for plane shape errors. The system comprises a sensor array, a data collection and analog-to-digital conversion module and a data processing and displaying module, wherein a modified least square successive two-point method plane shape error separation algorithm is used in processing software of the data processing and displaying module, and a data combining and fitting technique is introduced. The method is based on the modified least square successive two-point method plane shape error separation algorithm. The whole sampling data of a plane to be measured are subjected to partitioned processing, dimensionality reduction processing of the data array is achieved through an online partitioning algorithm, then the data processing speed is improved, the capacity of sampling points is increased, and the method mainly comprises processes such as data error separation and fitting. The data combining and fitting technique is used, so that the distribution density of sampling points is improved effectively, and the capability that a measurement system reflects the plane shape error of the plane to be measured is improved.

Description

technical field [0001] The invention relates to an online measurement technology for plane shape errors, in particular to an online measurement system and method for plane shape errors. Background technique [0002] Precision processing capability is one of the most important modern industrial capabilities, and high-precision measurement capability is an indispensable part of precision processing capability. High-precision measurement capability can improve processing accuracy, simplify process control, and improve production efficiency. Among them, the measurement and evaluation of plane shape error is of great significance for the production of workpieces with plane shape error requirements. In the fields of large-scale machinery manufacturing such as ships and machine tools, a simple and efficient plane shape error measurement system and method can significantly improve Product performance, production efficiency, yield and reliability. [0003] Plane shape error measurem...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/28
Inventor 熊木地陈东岳王文超
Owner DALIAN MARITIME UNIVERSITY
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