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Advances in Manufacturing 2023年第4期11卷 587-600页

作者： Da-Wei Zhang Wen-Long Gao-Zhang Qi Zhang Xi’an Key Laboratory of Intelligent Equipment and Control School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an710049People’s Republic of China

Distortion during the forging or machining processes of a blade causes problems in subsequent manufacturing. This paper proposes an alternative multipoint correction method integrated with blade measurement, determination of correcting parameters, and adjustment of the correcting die. An iterative algorithm for determining the correcting parameters is proposed. Measuring equipment combining a laser displacement sensor with multipoint flexible support is manufactured to measure the blade shape. Multipoint correcting equipment with an adaptive lower die and rapid adjustment is manufactured, and software is developed for data analysis and equipment control. The correction experiment for a rough-machined steam-turbine blade indicates that the correcting parameters can be determined after one modification based on numerical simulation, and that a rough blade that meets the allowance for finish machining can be obtained using the determined correction parameters.

关键词： Blade surface measurement Numerical simulation Multipoint correction

surface measurement Based on Instantaneous Random Illumination

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Chinese Journal of Aeronautics 2009年第3期22卷 316-324页

作者：张辉张丽艳王宏涛陈鉴富南京航空航天大学江苏省精密与微细制造技术重点实验室

This article introduces a surface measurement system which is able to take a measurement in an extremely short period of less than 2 milliseconds. It is composed of two cameras together with a specifically designed projector that projects an instantaneous random image pattern onto the objective surface. With the aid of the projected pattern, a match of image with corresponding sub-pixel is steadily established and a cluster of dense 3D points is obtained at the same time. A detailed discussion about the des...

关键词： surface measurement stereo matching calibration instantaneous random illumination

A Robotic System for surface measurement Via 3D Laser Scanner

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A Robotic System for Surface Measurement Via 3D Laser Scanne...

Qualification of superpolished substrates for laser-gyro by surface integrated scatter measurement

2012年计算机应用与系统建模国际会议

作者： Canduo Shen Sheng Zhu The Quartermaster Institute of the General Logistics Department National Key laboratory for Remanufacturing

This paper presents a robotic system for surface measurement, and which was designedin the form of "Scanner + Robot + Position-adjustor". Firstly, the main components in the system are briefly introduced and the working principles are described. Then, a series of key problems involved in the system, which mainly including coordinate transformation, data processing and surface reconstruction, are emphatically researched and consequently, the corresponding solutions are put forward. Lastly, the principles and algorithms mentioned are implemented in software, so as to realize the course of measurement. Using this system, the surface model of work piece can be established quickly and conveniently, which have extensive applied foreground.

关键词： surface measurement Robot Coordinate transformation surface reconstruction

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Chinese Optics Letters 2010年第2期8卷 181-183页

作者：魏志猛龙兴武杨开勇 College of Optoelectric Science and Engineering National University of Defense Technology

Integrated scatterometer for qualification of superpolished substrates for laser-gyro by surface scatter loss measurement is constructed. Different from the qualification of substrate by surface roughness, the scatterometer measures the forward surface scatter loss to check whether the mirror made of the substrate will be suitable for the required laser-gyro lock-in specification. The scatterometer utilizes convex lens instead of integrating sphere to collect scatter light. Special sample support and baffle are designed to block unwanted light. The result of stability test is given, which is about 0.4% over 10 h.

关键词： Gyroscopes Meteorological instruments Mirrors surface measurement surface roughness

Unification of the Kirchhoff approximation and the method of moment for optical wave scattering from the lossy dielectric Gaussian random rough surface

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Chinese Optics Letters 2009年第3期7卷 259-262页

作者：麻军郭立新程相哲 School of Science Xidian University

The optical wave scattering from one-dimensional （1D） lossy dielectric Gaussian random rough surface is studied. The tapered incident wave is introduced into the classical Kirchhoff approximation （KA）, and the shadowing effect is also taken into account to make the KA results have a high accuracy. The definition of the bistatic scattering coefficient of the modified KA and the method of moment （MOM） are unified. The characteristics of the optical wave scattering from the lossy dielectric Gaussian random rough surface of different parameters are analyzed by implementing MOM.

关键词： Dielectric devices Light scattering Optical waveguides Scattering surface measurement

Development of Squirming Robot for the Inspection of Internal surface

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厦门大学学报（自然科学版） 2002年第S1期41卷 50-51页

作者： YANG Qing-hua, ZHANG Li-bin, XU Fang, DU Ming-yu, RUAN Jian, YUAN Ju-long (College of Mechanical & Electrical Engineering, Zhejiang University of Technology, Hangzhou 310032, China)

In many cases, the internal surface of the mechanical elements is required to detect and measure. For this task, a special mobile device should be utilized. A squirming robot is presented for the purpose, which is working on the controlled deformation of a pneumatic columnar elastic shell. This elastic shell is made of caoutchouc. It is strengthened by the internal spiral metal wire, which also restricts its deformation in radial direction, so it can only deform in axis direction. The squirming robot also involves four osculums and a vision system. It can go forward and back and turn around easily by controlling the four osculums and the moving velocity can be controlled through the pressure of compressed air. The moving step can be flexibly adjusted. In this paper, the working principle and mechanical characteristics of the columnar elastic shell are analyzed and discussed in detail. The relationship between the elongation X and the pressure of compressed air P, the bending angular degree θ and the pressure of compressed air P are first established by using the theory of elasticity mechanics. And also we simulate its nonlinear dynamic system in certain diving force F and elastic coefficient E of elastic shell. The results indicate this squirming robot is simple in structure, low cost in manufacture and being apt to be miniaturized. It can be used in detecting the internal surface of mechanical elements or inside certain complicate pipe, when this equipment is manufactured in special, and that this process is able to be fulfilled.

关键词： surface measurement pneumatic squirming robot simulate

Vibration shape testing of space sheet structure

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Journal of Shanghai University(English Edition) 2010年第5期14卷 354-358页

作者：樊红朝钱晋武 School of Mechatronics Engineering and Automation Shanghai University School of Mechanical Engineering Ningbo University of Technology

The space sheet for a solar array structure is large in dimension, and flexible to induce complex distortion. It is difficult to measure the distortion. A large-scale flexible test prototype system is built for sheet structure vibration monitoring based on the vibration information of the solar array in space. The system provides an intelligent test method for flexible space structure with embedded sensors and non-visualization reinstruction. Multiple fiber Bragg grating （FBG） sensors are packaged and embedded into the structure with spatial division multiplexing （SDM） and wavelength division multiplexing （WDM）. The sensor interrogator distinguishes wavelength shifts that can be turned into curvature of the curve. The structure shape is reconstructed based on the curvature information and the arc-length, and then displayed. The experiment shows that the system has a high FBG sensitivity. The reconstruction algorithm is fast with high precision. The system has great potential for use in health monitoring of the space sheet structure.

关键词： smart materials and structures solar array surface measurement fiber Bragg grating

A Semi-Automatic Thickness Inspection Technique for Marine Propellers

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厦门大学学报(自然科学版) 2002年第S1期41卷 213-213页

作者： M K Lam S F Lee C S Lam W S Chow P Iovenitti S H Masood Department of Industrial Engineering&Management Hong Kong Institute of Vocation Education(Tsing Yi)Hong KongChina Industrial Research Institute Swinburne(IRIS) Swinburne University of TechnologyVictoriaAustralia

This paper describes the design and development of a Semi-Automatic Precision Caliper System to measure the thickness of an outboard marine engine propeller *** commonly used methods for measuring the thickness of a propeller blade are reviewed in this *** include the P rops Scan,3D Vision System and Black ***,the operating practices and availability of different facilities in industry necessitate a more cost-effect ive *** alternative method using a Semi-Automatic Precision Caliper S ystem is therefore *** of the design criteria,principles of oper ation as well as the testing and verification of the system are *** paper concludes that the Semi-Automatic Precision Caliper System is a low cost and effective method for measuring the thickness of a propeller.

关键词： thickness measurement propellers profilemetry metrology surface measurement