The measurement uncertainties in the laser interferometry-based sensing and tracking technique

Teoh, P L; Shirinzadeh, Bijan; Foong, Chee Wei; Alici, Gürsel

doi:10.1016/s0263-2241(02)00006-4

Cited by 87 publications

(38 citation statements)

References 6 publications

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“…A laser-interferometry-based sensing and measurement system is utilised to detect the displacement of the Cartesian positioning mechanism. Such an experimental setup provides low measurement uncertainties and high accuracy and resolution, and is frequently used for tracking of dynamic systems [32][33][34][35]. Different contact types are introduced by the robot manipulator.…”

Section: Resultsmentioning

confidence: 99%

A hybrid contact state analysis methodology for robotic-based adjustment of cylindrical pair

Shirinzadeh

Zhong

Tilakaratna

et al. 2010

Int J Adv Manuf Technol

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The peg-in-hole insertion and adjustment operation is one of the most common tasks in the robotic and automatic assembly processes. Fine motion strategies associated with adjustment operations on a peg-in-hole are fundamental manipulations that can be utilised in dynamic assembly and reconfigurable workholding or fixturing systems. This paper presents a comprehensive study of robotic-based height adjustment of a cylindrical pair based on maintaining minimum contact forces between the links. The outer link is held by the end-effector of a 6-DOF (Degrees of freedom) serial articulated robot manipulator. The environment represented by the inner-link can be either static or dynamic. A force based approach and a d value approach are established to determine the type of contact that exists between the links of a cylindrical pair, and to extract control parameters. Based on the comparison and analysis of these two approaches, a hybrid methodology is established by combining a d value approach with a force based approach for contact state determination. Formulations capable of extracting necessary control parameters which ensure minimum contact forces between the links are established from both planar and spatial viewpoints under both static and dynamic environmental conditions. Experimental results demonstrate the effectiveness of the proposed methodology.

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Section: Resultsmentioning

confidence: 99%

A hybrid contact state analysis methodology for robotic-based adjustment of cylindrical pair

Shirinzadeh

Zhong

Tilakaratna

et al. 2010

Int J Adv Manuf Technol

Self Cite

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“…Angular measurement is the largest contributing source for the measurement uncertainty of laser trackers [207]. The beam steering mechanism and the rotary encoders are subject to misalignments, offsets, nonlinearities and coaxiality errors [92].…”

Section: Laser Trackermentioning

confidence: 99%

Measurement technologies for precision positioning

et al. 2015

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“…Also, the origins of their own coordinate systems are in different places ( Figure 3). The main sources of errors in LT accuracy that affect verification are divided into errors due to environmental influences, assembly, and calibration errors, errors of LT components such as encoders or sensors, and errors due to the retroreflector and measurement technologies [24][25][26][27][28]. …”

Section: Laser Tracker As a Measurement Systemmentioning

confidence: 99%

“…As a result of the design, calibration, and accuracy of components used, the LT has a measurement uncertainty [24][25][26]. Therefore, manufacturers provide specifications of their LTs, and their accuracy is evaluated based on the standards ISO DIS 10360-10 and ASME B 89.…”

Section: Measurement Uncertaintymentioning

confidence: 99%

Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker

et al. 2016

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Besides presenting a volumetric verification technique that allows characterization of the different geometric errors of a machine tool (MT) depending on its kinematic chain and geometry through a kinematic model, this paper investigates the influence of measurement tools and techniques available on the final accuracy of the MT. Volumetric verification based on a laser tracker (LT) relates the coordinates of the tool with the coordinates of the LT, including it into the kinematic model. Using a non-lineal optimization process, approximation functions that characterize the joint influence of MT geometric errors are obtained. However, measurement data will be affected by previous compensation of the MT, the accuracy of the measurement system, LT measurement technology, the type of retroreflector used, and techniques used to improve data accuracy, among other sources of errors. This paper studies the adequacy of different commercial alternatives such as: retroreflectors, LTs from different manufacturers, etc., that can be applied in MT verification using a long-range MT. As the accuracy is strongly affected by the uncertainty of its angular encoders, the multilateration technique tries to improve data accuracy using only LT radial information. Nonetheless, a new bundle adjustment which uses radial and angular information is presented in current metrology software. This paper studies both techniques and analyzes their adequacy for MT verification too.

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The measurement uncertainties in the laser interferometry-based sensing and tracking technique

Cited by 87 publications

References 6 publications

A hybrid contact state analysis methodology for robotic-based adjustment of cylindrical pair

A hybrid contact state analysis methodology for robotic-based adjustment of cylindrical pair

Measurement technologies for precision positioning

Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker

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