检索结果-内蒙古大学图书馆

second order cone programming for source localization using acoustic energy measurements

Journal of Computational Information Systems 2015年第19期11卷 6911-6918页

作者： Zhang, Jian Cao, Ping Yuan, Xin School of Air Transportation Shanghai University of Engineering Science Shanghai China School of Computer Science Fudan University Shanghai China School of Economics and Management Fuzhou University Fuzhou China College of Information Engineering Zhejiang A&F University Hangzhou China

second order cone programming (SOCP) method is introduced to derive the source location by relaxing the acoustic energy measurement model into convex optimization. The corresponding LS-SOCP and WLS-SOCP algorithm are proposed for acoustic energy-based source localization. Due to fewer variables and equality constraints, SOCP runs faster than semidefinite programming (SDP) algorithm for the same given model. The simulations show that the MSE performance degrades as the noise increases. The MSE of WLS-SOCP and LS-SOCP is reduced when the average energy is increased. The MSE performance of WLS-SOCP algorithm is better than that of the LS-SOCP by using the optimal weight. © 2015 by Binary Information Press.

关键词： second-order cone programming

来源：评论

学校读者我要写书评

暂无评论

An [...] iteration primal-dual path-following method, based on wide neighbourhood and large update, for second-order cone programming

引用

Optimization 2014年第5期63卷 679页

作者： Feng, Zeng Zhe Fang, Liang He, Guoping [a] College of Information Engineering Taishan Medical University 271016 Tai'an China [b] Department of Mathematics and System Science Taishan University 271021 Tai'an China [c] College of Information Science and Engineering Shandong University of Science and Technology 266510 Qingdao China

This article proposes a new primal-dual path-following interior point algorithm for second-order cone programming. Each iterate always follows the usual wide neighborhood ..., it does not necessarily stay within it, but must stay within the wider neighbourhood ...(t, β). This paper shows that the algorithm has ... iteration complexity bound which is better than that of usual wide neighbourhood algorithm O(n log ...), where n is the dimension of the problem, ... with ... the required precision, α ... [0, 1] the given constant number and (x ..., s ...) the initial interior solution. It is the best result in regard to the iteration complexity bound in the context of path-following method for second-order cone programming. (ProQuest: ... denotes formulae/symbols omitted.)

关键词： second-order cone programming path-following interior-point method wide neighbourhood iteration complexity bound 65K05 90C22 90C51

来源：评论

学校读者我要写书评

暂无评论

Adaptive equalizer based on second-order cone programming in underwater acoustic communication

引用

Sensors and Transducers 2014年第1期162卷 111-116页

作者： Chen, Yang Zhou, Bin Yin, Jingwei Changzhou Univ. Changzhou 213164 China Science and Technology on Underwater Acoustic Laboratory Harbin 150001 China

An improved adaptive equalizer based on the principle of minimum mean square error (MMSE) is proposed. This optimization problem which is shown to be convex, is transformed to second-order cone (SOC) and solved using the interior point method instead of conventional iterative methods such as least mean squares (LMS) or recursive least squares (RLS). To validate its performance a single-carrier system for underwater acoustic communication with digital phase-locked loop and the adaptive fractional spaced equalizers was designed and a lake trial was carried out. According to the results, comparing with traditional equalizers based on LMS and RLS algorithms, the equalizer proposed needs no iterative process and gets rid of the contradiction between convergent rate and precision. Therefore it overcomes the difficulty of parameters setting. Furthermore, the algorithm needs much less training codes to achieve the same equalization performance and improves the communication efficiency. © 2014 IFSA Publishing, S. L.

关键词： second-order cone programming

来源：评论

学校读者我要写书评

暂无评论

A new non-interior continuation method for second-order cone programming

引用

JOURNAL OF NUMERICAL MATHEMATICS 2013年第4期21卷 301-323页

作者： Tang, J. He, G. Fang, L. Xinyang Normal Univ Coll Math & Informat Sci Xinyang 464000 Peoples R China Shanghai Jiao Tong Univ Dept Math Shanghai 200240 Peoples R China Shandong Univ Sci & Technol Coll Informat Sci & Engn Qingdao 266510 Peoples R China Taishan Univ Coll Math & Syst Sci Tai An 271021 Shandong Peoples R China

We propose a new smoothing function in this paper by smoothing the symmetric perturbed Fischer-Burmeister function. Based on this new function, we present a new non-interior continuation method for solving the second-order cone programming. We adopt a variant merit function. Our algorithm needs to solve only one system of linear equations and to perform only one line search at each iteration. It can start from an arbitrary point and does not require the iteration points to be in the set of strictly feasible solutions. We prove the global and local quadratic convergence of the algorithm under suitable assumptions. Numerical results indicate that our algorithm performs well.

关键词： second-order cone programming smoothing function non-interior continuation method global convergence quadratic convergence

来源：评论

学校读者我要写书评

暂无评论

An Extended Sequential Quadratically Constrained Quadratic programming Algorithm for Nonlinear, Semidefinite, and second-order cone programming

引用

JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS 2013年第2期156卷 183-212页

作者： Auslender, Alfred Univ Lyon 1 Inst Camille Jordan F-69365 Lyon France Ecole Polytech Dept Econ Palaiseau France

This paper is concerned with nonlinear, semidefinite, and second-order cone programs. A general algorithm, which includes sequential quadratic programming and sequential quadratically constrained quadratic programming methods, is presented for solving these problems. In the particular case of standard nonlinear programs, the algorithm can be interpreted as a prox-regularization of the Solodov sequential quadratically constrained quadratic programming method presented in Mathematics of Operations Research (2004). For such type of methods, the main cost of computation amounts to solve a linear cone program for which efficient solvers are available. Usually, "global convergence results" for these methods require, as for the Solodov method, the boundedness of the primal sequence generated by the algorithm. The other purpose of this paper is to establish global convergence results without boundedness assumptions on any of the iterative sequences built by the algorithm.

关键词： Sequential quadratic programming Sequential quadratically constrained quadratic programming Nonlinear programming Semidefinite programming second-order cone programming Global convergence

来源：评论

学校读者我要写书评

暂无评论

Shakedown analysis of incompressible materials under cyclic loads: A locking-free CS-FEM-Q5 numerical approach

引用

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS 2025年 168卷

作者： Ho, Phuc L. H. Lee, Changkye Le, Canh, V Yee, Jurng-Jae Dong A Univ Univ Core Res Ctr Disaster free & Safe Ocean City Busan 49315 South Korea Univ Miami Ctr Digital Cardiovasc Innovat Miller Sch Med Miami FL 33136 USA HUTECH Univ CIRTech Inst Ho Chi Minh City Vietnam Dong A Univ Dept Architectural Engn Busan 49315 South Korea

Volumetric locking may occur in plastic analysis of incompressible materials using low-order finite elements due to incompressibility constraints. This study presents a locking-free smoothed five-node quadrilateral element-based approach for plastic analysis in structural engineering. The proposed Q5-element employing four cell-based smoothing domains effectively alleviates the volumetric locking issues, herein the problems under plane strain conditions. The resulting large-scale optimization problem is formulated in a conic programming form, enabling efficient use of the interior-point optimizer. Numerical investigations demonstrate the method's effectiveness in alleviating volumetric locking, accurately predicting collapse and shakedown limits, and generating interaction diagrams for load-carrying capacity and structural collapse mechanisms.

关键词： Incompressible material Repeated/cyclic load Five-node quadrilateral element Smoothed finite element method second-order cone programming

来源：评论

学校读者我要写书评

暂无评论

Electric Vehicle and Soft Open Points Co-Planning for Active Distribution Grid Flexibility Enhancement

引用

ENERGIES 2025年第3期18卷 694-694页

作者： Fang, Jie Li, Wenwu Chen, Dunchu China Three Gorges Univ Coll Elect Engn & New Energy Yichang 443002 Peoples R China China Three Gorges Univ Hubei Key Lab Cascaded Hydropower Stn Operat & Con Yichang 443002 Peoples R China

With the increasing penetration of distributed generation (DG), the supply-demand imbalance and voltage overruns in the distribution network have intensified, and there is an urgent need to introduce flexibility resources for regulation. This paper proposes co-planning of electric vehicles (EVs) and soft opening points (SOPs) to improve the flexibility of the active distribution network, thereby improving the economics and flexibility of the distribution network. Firstly, this paper establishes a charging pile day-ahead dispatchable prediction model and a real-time dispatchable potential assessment model through Monte Carlo sampling simulation. It replaces the traditional energy storage model with this model and then solves the EV and SOP collaborative planning model using a second-order conical planning algorithm with the objective function of minimizing the annual integrated cost. At the same time, the flexibility of the distribution network is analyzed by two indicators: power supply and demand balance and branch load margin. Finally, the optimization method proposed in this paper is analyzed and validated on an improved IEEE 33-node distribution system. Example results show that the planning method proposed in this paper can effectively reduce the annual comprehensive operating cost of distribution networks, meet the flexibility index, and be conducive to improving the economy and flexibility of distribution network operation.

关键词： distributed generation soft open point electric vehicle Monte Carlo sampling second-order cone programming

来源：评论

学校读者我要写书评

暂无评论

Optimal scheduling of battery energy storage system operations under load uncertainty

引用

APPLIED MATHEMATICAL MODELLING 2025年 138卷

作者： Rafayal, Syed Mahbub Alnaggar, Aliaa Toronto Metropolitan Univ Mech Ind & Mechatron Engn Dept 350 Victoria St Toronto ON M5B 2K3 Canada

This paper investigates the optimal scheduling of battery energy storage system operations considering energy load uncertainty. We develop a novel two-stage distributionally robust optimization model to determine an optimal battery usage schedule that minimizes the worst-case energy costs considering peak load costs. The model leverages deep-learning-based probabilistic forecasting in the construction of the ambiguity set. Specifically, we develop a Deep Autoregressive Recurrent Networks model to generate a probabilistic forecast of energy loads over a time horizon. The output of the forecasting model is then used to construct a marginal-moment ambiguity set for the distributionally robust optimization model. To solve the proposed model, we establish a closed-form characterization of the optimal second-stage objective function value. Leveraging this closed-form expression and using second-order conic duality, we derive an exact single-level mixed integer second-order conic reformulation of the problem. Extensive computational experiments, conducted on a real dataset, demonstrate the value of our proposed model and the effectiveness of the resulting battery schedule. The results show that the proposed model outperforms several benchmarks, including two-stage stochastic programming. Furthermore, the accuracy of the load forecast significantly impacts the effectiveness of the optimal battery schedule in eliminating peak loads by achieving up to 18% reduction in the maximum energy load.

关键词： Distributionally robust optimization second-order cone programming Probabilistic forecasting Energy management Battery energy storage system

来源：评论

学校读者我要写书评

暂无评论

Numerical Analysis of Strain Localization in Granular Soils by Modified Cam-Clay Model Based on Micropolar Continuum Theory

引用

INTERNATIONAL JOURNAL OF GEOMECHANICS 2024年第7期24卷

作者： Tang, Jian-bin Chen, Xi Liu, Zong-qi Cui, Liu-sheng Beijing Jiaotong Univ Minist Educ State Key Lab Urban Underground Engn Beijing 100044 Peoples R China

To predict strain localization behaviors of granular soils, the modified Cam-Clay (MCC) model is incorporated into the second-order cone programming optimized micropolar continuum finite-element method (mpcFEM-SOCP). Based on a cylindrical cavity expansion problem, a biaxial compression problem, and a rigid strip footing problem, the numerical analyses reveal that the nonphysical strain localization behaviors including mesh-dependency of shear band, rumpling, or bifurcation can be alleviated or even removed if mpcFEM-SOCP is implemented appropriately. Furthermore, the internal characteristic length in mpcFEM-SOCP is a macroscopic physical parameter that characterizes the microscopic response of soil particles and is utilized to model the shear band width. A comparison between mpcFEM-SOCP and discrete element method (DEM) is performed, and the analysis results disclose that the internal characteristic length is closely related to the median particle size, and the evolution trend of the local void ratio in the specimen predicted by mpcFEM-SOCP agrees well with that by DEM. A larger shear dilatancy, however, is generally simulated by the latter. Finally, in the undrained analysis of the rigid footing problem, the evolution curves of excess pore-water pressure predicted by standard finite-element method and mpcFEM-SOCP may differ to some extent, as they enable the observations on the interesting evolution behaviors of excess pore-water pressure.

关键词： Internal characteristic length second-order cone programming Alpha-shape algorithm Discrete element method Drained/undrained condition

来源：评论

学校读者我要写书评

暂无评论

Convexification of Hybrid AC-DC Optimal Power Flow with Line-Commutated Converters

引用

CSEE Journal of Power and Energy Systems 2024年第2期10卷 617-628页

作者： Hongyuan Liang Zhigang Li J.H.Zheng Q.H.Wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

Line-commutated converter (LCC)-based high-voltage DC (HVDC) systems have been integrated with bulk AC power grids for interregional transmission of renewable power. The nonlinear LCC model brings additional nonconvexity to optimal power flow (OPF) of hybrid AC-DC power grids. A convexification method for the LCC station model could address such nonconvexity but has rarely been discussed. We devise an equivalent reformulation for classical LCC station models that facilitates second-order cone convex relaxation for the OPF of LCC-based AC-DC power grids. We also propose sufficient conditions for exactness of convex relaxation with its proof. Equivalence of the proposed LCC station models and properties, exactness, and effectiveness of convex relaxation are verified using four numerical simulations. Simulation results demonstrate a globally optimal solution of the original OPF can be efficiently obtained from relaxed model.

关键词： AC-DC power system convex relaxation linecommutated converter optimal power flow second-order cone programming

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：