Beijing Aerospace Institute for Metrology and Measurement Technology

China Academy of Launch Vehicle Technology

Lizhen Guo

Ke Liu

Yinxiao Miao

Zengyu Sun

Tong Wu

Hao Zhu

Yue Gao

Jincheng Song

Haicun Zhang

A system for automatically measuring an exhaust area of a turbine guide vane, including a data acquisition module configured to measure a three-dimensional point cloud coordinate of a contour of a throat; a positioning module configured to automatically adjust a relative spatial position between the data acquisition module and the turbine guide vane; and a data processing module configured to fit a three-dimensional contour of the throat according to the three-dimensional point cloud coordinate measured by the data acquisition module. A method for automatically measuring an exhaust area of a turbine guide vane using the system is also provided.

System and method for automatically measuring exhaust area of turbine guide vane

The present invention relates to a method for correcting measuring errors of a long-distance scanning laser radar, comprising: S, establishing a measuring model and acquiring a positional relationship between a measured point and a coordinate origin; S, acquiring an actual positional relationship between the measured point and a laser radar and establishing error models of three major error sources; S, performing a sub-parameter measuring experiment on the laser radar to acquire major sample data of the three major error sources; S, analyzing probability density distribution of the three major error sources with a statistical method to obtain error correction samples of the three major error sources in a three-dimensional coordinate system; S, acquiring three-dimensional coordinate samples according to the error correction samples of the three major error sources and the measuring model; and S, correcting a three-dimensional coordinate measuring point in real time.

Method for correcting measuring errors of long-distance scanning laser radar

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Beijing, China

Lizhen Guo