0000000000722849

AUTHOR

Søren Emil Sørensen

showing 3 related works from this author

Non-linear optimization of track layouts in loop-sorting-systems

2013

Optimization used for enhancing geometric structures iswell known. Applying obstacles to the shape optimization problemis on the other hand not very common. It requires a fast contact search algorithmand an exact continuous formulation to solve the problem robustly. This paper focuses on combining shape optimization problemswith collision avoidance constraints by which a collision detection algorithmis presented. The presentedmethod is tested against the commercial loop-sorting-system used for sorting of medium sized items. The objective is to minimize price and footprint of the system whilemaintaining its functionality. Contact constraints are in this context important to include as variou…

Mathematical optimizationEngineeringOptimization problembusiness.industrySortingContext (language use)Building and ConstructionVector optimizationControl and Systems EngineeringSearch algorithmCollision detectionShape optimizationMulti-swarm optimizationbusinessCivil and Structural Engineering
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mplicit Identification of Contact Parameters in a Continuous Chain Model

2011

Accurate contact modeling is of great importance in the field of dynamic chain simulations. In this paper emphasis is on contact dynamics for a time-domain simulation model of large chains guided in a closed loop track. The chain model is based on theory for unconstrained rigid multibody dynamics where contact within the chain and with the track is defined through continuous point contacts using the contact indentation and rate as means. This paper presents an implicit method to determine contact parameters of the chain model through the use of none gradient optimization methods. The set of model parameters are estimated by minimizing the residual between simulated and measured results. The…

Contact modelMathematical optimizationEngineeringbusiness.industryExperimental measurementsMultibody systemResiduallcsh:QA75.5-76.95Computer Science ApplicationsHysteresisChain (algebraic topology)Control and Systems EngineeringControl theoryModeling and SimulationIndentationDamping factorPoint (geometry)Contact dynamicslcsh:Electronic computers. Computer sciencebusinessOptimization methodsSoftwareModeling, Identification and Control: A Norwegian Research Bulletin
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Enhanced chain dynamics in loop-sorting-systems by means of layout optimization and a kinematic model of the polygon action

2012

Published version of an article in the journal: Structural and Multidisciplinary Optimization. Also available from the publisher at: http://dx.doi.org/10.1007/s00158-011-0743-7 Poor dynamics owing to polygon action is a known concern in mechanical applications of closed articulated chains. In this paper a kinematic model of the polygon action in large chains of loop-sorting-systems is proposed. Through optimization techniques the chain dynamics is improved by minimizing the polygon action using a parametric model of the track layout as design variables. Three formulations of the kinematic polygon action are tested on an average sized planer tracks layout to find a superior model. Verificati…

polygon actionLoop (graph theory)Mathematical optimizationControl and OptimizationComputer scienceengineeringVDP::Technology: 500::Mechanical engineering: 570SortingKinematicsloop-sorting-systemsComputer Graphics and Computer-Aided DesignAction (physics)Computer Science Applicationsmulti-body dynamicsChain (algebraic topology)Control and Systems EngineeringParametric modelPolygonEngineering design processAlgorithmoptimizationSoftware
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