NDLI: The uncertainty of parallel model coordinate measuring machine

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MAPAN : Volume 25

MAPAN : Volume 24

The uncertainty of parallel model coordinate measuring machine

Content Provider	Springer Nature Link
Author	Iimura, Kosuke Kataoka, Eiichiro Ozaki, Miyu Furutani, Ryoshu
Copyright Year	2011
Abstract	The Stewart platform is one of 6-DOF (6 degrees of freedom) parallel mechanism. A parallel mechanism is a mechanism to connect six actuators in parallel between the base and the stage. It is necessary to calibrate the kinematic parameters that compose the mechanism in order to use the parallel mechanism as the coordinate measuring machine. Additionally, it is necessary to estimate the uncertainty about the measurement results. In this study, the kinematics parameters are estimated by using the calibration point in one point, the uncertainty is estimated at several measurement coordinates from kinematic parameters and postures angle. The verification method is shown following; i) The amount of the actuator expansion and contraction in the parallel mechanism is assumed to be a value obtained with the sensor and, the kinematic parameters are estimated from the values by using the least squares method. ii)The coordinates of the stylus are calculated from the estimated kinematic parameters by forward kinematics. The uncertainty is estimated from the coordinates of the stylus. As a result, the influence of the uncertainty is reported when the target coordinates are measured.
Starting Page	47
Ending Page	53
Page Count	7
File Format	PDF
ISSN	09703950
Journal	MAPAN
Volume Number	26
Issue Number	1
e-ISSN	09749853
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-05-12
Publisher Institution	Metrology Society of India
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Theoretical, Mathematical and Computational Physics Numerical and Computational Physics Measurement Science and Instrumentation Mathematical Methods in Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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