Deformation, Alignment, and Vibration in Large Turbine-Generator Set

Teskey, W. F.; Lovse, J. W.; Al-Hanbali, N. N.

doi:10.1061/(asce)0733-9453(1996)122:2(65)

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…(b) By using the seven resultant parameters of transformation, all the coordinates of monitoring points of the second cycle must be transformed to the system of coordinates of the first cycle of monitoring process. Multi-parameter transformation (3D-Helmert transformation) is used for relating the original and repeated coordinates of the original points by using the following form [9,10].…”

Section: Datum Transformationmentioning

confidence: 99%

Application of Multi-Parameter Transformation in Deformation of Dam

Ehiorobo

Ehigiator

2013

AMR

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Objects and engineering structures are subject to displacements resulting from numerous internal and external factors. Determination of the magnitude of these displacements is possible on the basis of cyclic measurements of changes in position of points determining the geometrical shape of the studied object. Processing the measurement results is aimed at determining the characteristics of the changes and assessment of possible hazards. The paper proposes a methodology for processing repeated GPS data from two-measurement epoch 2010 and 2011 using a model that utilizes multi-parameter transformation, relating original and repeated observations. The mathematical model was applied to original and repeated Global positioning system (GPS) station observations made to target points at Ikpoba Dam in Benin City. The transformation consisted of a parameter similarity transformation at the reference station (translations in the X-, Yand Z-directions at the instrument station, and rotations about the X-, Y-and Z-axes), plus a scale factor relating original and repeated instrument-target. Using MATLAB programme, three control points were transformed and the coordinates of all other monitoring and reference stations were obtained with reference to the transformed control points.Points displacement between the measurement epoch were then computed from the transformed coordinates. The results obtained showed a maximum error of 1mm on the X coordinate, 2mm on the Y coordinate and 7mm in elevation.

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Section: Datum Transformationmentioning

confidence: 99%

Application of Multi-Parameter Transformation in Deformation of Dam

Ehiorobo

Ehigiator

2013

AMR

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“…The methodology, attributes and possibilities of this method are described in many publications. It is possible to present the measurement of shifts and reshaping of construction (Rueger, 2006), their parts (Procházka et al, 2010) or complex engineering facilities (Teskey et al, 1996), geological structures (Colesanti and Wasovsky, 2006) and the whole geological areas (Švábenský et al, 2012) or (Darby and Williams, 1991). Usually the terrestrial methods are chosen for the measurement.…”

Section: Introductionmentioning

confidence: 99%

Prague Castle Area Local Stability Determination Assessment by the Robust Transformation Method

Štroner

2014

Acta Geodynamica Et Geomaterialia

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A geodetic measurement of shifts and deformations is a well-known method. In the paper there is presented a methodology of the shifts assessment based on the robust estimation calculation and the following statistical testing. The methodology is exceptional in the fact, that every point can be potentially unstable and selection of the stable points is a part of the calculation process. No undoubtedly stable points are needed. Procedure was applied to a geodetic network of Prague Castle.

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Deformation, Alignment, and Vibration in Large Turbine-Generator Set

Cited by 2 publications

References 2 publications

Application of Multi-Parameter Transformation in Deformation of Dam

Application of Multi-Parameter Transformation in Deformation of Dam

Prague Castle Area Local Stability Determination Assessment by the Robust Transformation Method

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