Non-invasive laser based measurement of the helicoidal motion of a vibratory platform with three leaf-spring legs

Richard W. Silversides, Jian S. Dai, Kaspar A. Althoefer, Lakmal Seneviratne

Research output: Contribution to conferencePaperpeer-review

Abstract

A vibratory platform is a crucial part of automated assembly and has a similar structure to many parallel mechanisms. To investigate the platform, it is necessary to measure the helicoidal motion produced. This paper develops a new way of measuring the helicoidal motion by using reflective projection and by developing an analytical relationship between the measured vectors. A further relationship is developed between the cross sectional area of the laser light, the displacement of the platform and the output voltage from a photodiode. The study leads to a novel development of a non-invasive laser based measuring device. The paper further develops a dynamic calibration method, leading to calibration methods for both angular and linear displacements. The method is then confirmed by measurement to an accuracy of 20 μm.

Original languageBritish English
Pages1231-1239
Number of pages9
DOIs
StatePublished - 2004
Event2004 ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Salt Lake City, UT, United States
Duration: 28 Sep 20042 Oct 2004

Conference

Conference2004 ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Country/TerritoryUnited States
CitySalt Lake City, UT
Period28/09/042/10/04

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