Download | - View accepted manuscript: Surface contour measurement using a short range laser displacement sensor (PDF, 1.1 MiB)
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Author | Search for: Li, Yangsheng1; Search for: Xue, Lijue1 |
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Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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Format | Text, Article |
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Conference | 20th International Solid Freeform Fabrication Symposium, August 3-5 2009, Austin, Texas, USA |
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Abstract | Non-contact freeform surface measurement is widely used in industry. To acquire the surface data, a laser displacement sensor and a motion system are typically used. One of the factors that affect the measuring accuracy is the sensor’s resolution. A high resolution sensor usually has a short measuring range. However, an unknown component’s profile with a large peak-to-valley height variation can not usually be measured using a short range sensor. We designed and developed a measuring system based on an existing 3-axis motion system with a laser displacement sensor mounted on its Z axis. This measuring system can be easily integrated to an existing laser processing system by standard communication ports to extend its applications into tool path planning, in-line inspection and monitoring. With the developed system, the real-time distance from the sensor to the component surface is acquired, and used as a feedback signal to control the sensor’s position on the Z axis to automatically maintain its distance with a given value. Through this development, the measuring range of the system is extended from the sensor’s measuring range up to the Z axis travelling range of the motion system so that a surface with large peak-to-valley height variation can be easily measured by a short range sensor with substantially improved accuracy. |
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Publication date | 2009 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 21274384 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | a07c1cd3-b9e8-49c2-93e6-ad5848e2e536 |
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Record created | 2015-03-11 |
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Record modified | 2020-06-04 |
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