1990 Fiscal Year Final Research Report Summary
Form Assessment by a Compressing Information Technique of Free-Surface Data
| Project/Area Number |
01460107
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
機械要素
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
TSUKADA Tadao Tokyo Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (00016437)
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| Project Period (FY) |
1989 – 1990
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| Keywords | Spline function / Free-surface / From / Measurement / Three-dimensional measurement |
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| Research Abstract |
This research program aimed to develop the measuring instrument for free-surface and data processing system of massive form-data. The main results are as follows.
(1) Development of Three-Dimensional From Measuring System
The developed system consists of three-dimensional instrument, control device and computer system. The stylus to measure free-surface are set automatically. The table to set specimen is supported by air-bearings and positioned in accuracy of 0.1mum.
The orientation of specimen is corrected by Fuzzyーcontrol program. This Fuzzy-control program is executed by in-process. By this process, the preparatory plan is very simplified.
(2) Development of Algorithm to Compress Massive Data of Free-Surface
The measured data have noise signals and errors caused by discrete data. To remote these errors, this project developed the new algorithm to fit the three-dimensional spline function by optimization method. From this method, the data quantity to reproduce a free-surface is reduced to 40-60% of measured data quantity.
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