Optimization and Engineering最新文献_第9页

Flexible job-shop scheduling with limited flexible workers using an improved multiobjective discrete teaching–learning based optimization algorithm 基于改进的多目标离散教与学优化算法的有限弹性工人柔性作业车间调度

3区工程技术

Optimization and Engineering Pub Date : 2023-09-21 DOI: 10.1007/s11081-023-09842-8

Shaban Usman, Cong Lu, Guanyang Gao

引用次数: 0

Gradient descent-based freeform optics design for illumination using algorithmic differentiable non-sequential ray tracing 基于梯度下降的自由光学照明设计，采用算法可微的非顺序光线追踪

3区工程技术

Optimization and Engineering Pub Date : 2023-09-20 DOI: 10.1007/s11081-023-09841-9

Bart de Koning, Alexander Heemels, Aurèle Adam, Matthias Möller

{"title":"Gradient descent-based freeform optics design for illumination using algorithmic differentiable non-sequential ray tracing","authors":"Bart de Koning, Alexander Heemels, Aurèle Adam, Matthias Möller","doi":"10.1007/s11081-023-09841-9","DOIUrl":"https://doi.org/10.1007/s11081-023-09841-9","url":null,"abstract":"Abstract Algorithmic differentiable ray tracing is a new paradigm that allows one to solve the forward problem of how light propagates through an optical system while obtaining gradients of the simulation results with respect to parameters specifying the optical system. Specifically, the use of algorithmically differentiable non-sequential ray tracing provides an opportunity in the field of illumination engineering to design complex optical system. We demonstrate its potential by designing freeform lenses that project a prescribed irradiance distribution onto a plane. The challenge consists in finding a suitable surface geometry of the lens so that the light emitted by a light source is redistributed into a desired irradiance distribution. We discuss the crucial steps allowing the non-sequential ray tracer to be differentiable. The obtained gradients are used to optimize the geometry of the freeform, and we investigate the effectiveness of adding a multi-layer perceptron neural network to the optimization that outputs parameters defining the freeform lens. Lenses are designed for various sources such as collimated beams or point sources, and finally, a grid of point sources approximating an extended source. The obtained lens designs are finally validated using the commercial non-sequential ray tracer LightTools.","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136310950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimal control of combined heat and power station operation 热电联产运行优化控制

3区工程技术

Optimization and Engineering Pub Date : 2023-09-13 DOI: 10.1007/s11081-023-09848-2

J. Kůdela, J. Suja, R. Šomplák, J. Pluskal, D. Hrabec

{"title":"Optimal control of combined heat and power station operation","authors":"J. Kůdela, J. Suja, R. Šomplák, J. Pluskal, D. Hrabec","doi":"10.1007/s11081-023-09848-2","DOIUrl":"https://doi.org/10.1007/s11081-023-09848-2","url":null,"abstract":"Abstract Combined heat and power stations have become one of the most utilized units of district heating systems. These stations usually contain several boilers for burning fossil fuels and renewable resources used for heating up steam, which can be used either for residential and commercial heating or electricity generation. To ensure efficiency, a boiler should either run continuously (for at least a given period) on a power output higher than a given threshold or switch off. The optimal control of the plant operations should combine an efficient setup for the turbine and boilers in operation, reflecting the demand for steam and the price of electricity, and a schedule that describes which boilers should be in operation at a given time. This paper proposes a method for optimal control of combined heat and power station operation for a given time horizon. The method is based on a two-level approach. The lower-level models correspond to finding the optimal setup of the combined heat and power station parameters for an hourly demand for different kinds of steam. The upper-level model corresponds to the optimal schedule of the operations of the individual boilers, which is planned for the entire time horizon. The lower-level model is modeled as a mixed-integer linear programming problem and is solved using parametric programming. A dynamic programming algorithm solves the upper-level model with a rolling horizon. The validity of the proposed method and its computational complexity for different granularity of the time horizon, different ranges of the parameters, varying demand for various kinds of steam, and varying electricity prices are investigated in a case study. The presented approach can be readily applied to other control problems with a similar structure.","PeriodicalId":56141,"journal":{"name":"Optimization and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135741599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of explicit energy bounds in optimization of 3D elastic structures 显式能量界在三维弹性结构优化中的应用

3区工程技术

Optimization and Engineering Pub Date : 2023-09-11 DOI: 10.1007/s11081-023-09840-w

Krešimir Burazin, Ivana Crnjac

引用次数: 0

A taxonomy of constraints in black-box simulation-based optimization 基于黑盒仿真优化中的约束分类

3区工程技术

Optimization and Engineering Pub Date : 2023-09-09 DOI: 10.1007/s11081-023-09839-3

Sébastien Le Digabel, Stefan M. Wild

引用次数: 4

Uniform flow in axisymmetric devices through permeability optimization 通过渗透率优化实现轴对称装置中的均匀流动

IF 2.1 3区工程技术

Optimization and Engineering Pub Date : 2023-09-01 DOI: 10.1007/s11081-023-09820-0

Harbir Antil, D. Kouri, Denis Ridzal, David B. Robinson, M. Salloum

引用次数: 0

Multi-objective structural optimization of vehicle wheels: a method for preliminary design 车辆车轮多目标结构优化:一种初步设计方法

3区工程技术

Optimization and Engineering Pub Date : 2023-08-24 DOI: 10.1007/s11081-023-09833-9

P. Stabile, F. Ballo, M. Gobbi, G. Previati

引用次数: 0

Takeoff optimisation of coaxial compound helicopter with uncertainty quantification 具有不确定性量化的同轴复合直升机起飞优化

IF 2.1 3区工程技术

Optimization and Engineering Pub Date : 2023-08-18 DOI: 10.1007/s11081-023-09832-w

Yanqin Zhao, Ye Yuan, Renliang Chen

引用次数: 0

Enhancing explainability of stochastic programming solutions via scenario and recourse reduction 通过情景化和资源化简增强随机规划解的可解释性

IF 2.1 3区工程技术

Optimization and Engineering Pub Date : 2023-08-11 DOI: 10.1007/s11081-023-09825-9

Tushar Rathi, Rishabh Gupta, J. M. Pinto, Qi Zhang

引用次数: 1

Predicer: abstract stochastic optimisation model framework for multi-market operation Predicer:多市场运营的抽象随机优化模型框架

IF 2.1 3区工程技术

Optimization and Engineering Pub Date : 2023-08-09 DOI: 10.1007/s11081-023-09824-w

E. Pursiheimo, Dennis Sundell, J. Kiviluoma, Helmi Hankimaa

引用次数: 0