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Quality-guaranteed Dubins Path Planning for USV Based on Mixed-integer Piecewise linear Programming for Addressing the Extended Minimum-time Intercept Problem 认领 引用 被引量：1
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作者 Xing Zhou Kelin Zhu +3 位作者 Shuang Liu Zhaoqing Li Wenxin Zhang Kang Du 《哈尔滨工程大学学报（英文版）》 CSCD 2026年第1期216-227,共12页
During the use of robotics in applications such as antiterrorism or combat,a motion-constrained pursuer vehicle,such as a Dubins unmanned surface vehicle(USV),must get close enough(within a prescribed zero or positive... During the use of robotics in applications such as antiterrorism or combat,a motion-constrained pursuer vehicle,such as a Dubins unmanned surface vehicle(USV),must get close enough(within a prescribed zero or positive distance)to a moving target as quickly as possible,resulting in the extended minimum-time intercept problem(EMTIP).Existing research has primarily focused on the zero-distance intercept problem,MTIP,establishing the necessary or sufficient conditions for MTIP optimality,and utilizing analytic algorithms,such as root-finding algorithms,to calculate the optimal solutions.However,these approaches depend heavily on the properties of the analytic algorithm,making them inapplicable when problem settings change,such as in the case of a positive effective range or complicated target motions outside uniform rectilinear motion.In this study,an approach employing a high-accuracy and quality-guaranteed mixed-integer piecewise-linear program(QG-PWL)is proposed for the EMTIP.This program can accommodate different effective interception ranges and complicated target motions(variable velocity or complicated trajectories).The high accuracy and quality guarantees of QG-PWL originate from elegant strategies such as piecewise linearization and other developed operation strategies.The approximate error in the intercept path length is proved to be bounded to h2/(4√2),where h is the piecewise length. 展开更多
关键词 Minimum-time intercept problem Dubins vehicle Mixed-integer piecewise-linear program Linearization Approximate error trigonometric function USV
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Linear-in-Parameter Models Based on Parsimonious Genetic Programming Algorithm and Its Application to Aero-Engine Start Modeling 认领 引用 被引量：4
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作者 李应红 尉询楷 《Chinese Journal of Aeronautics》 EI CAS 2006年第4期295-303,共9页
A novel Parsimonious Genetic Programming （PGP） algorithm together with a novel aero-engine optimum data-driven dynamic start process model based on PGP is proposed. In application of this method, first, the traditio... A novel Parsimonious Genetic Programming （PGP） algorithm together with a novel aero-engine optimum data-driven dynamic start process model based on PGP is proposed. In application of this method, first, the traditional Genetic Programming（GP） is used to generate the nonlinear input-output models that are represented in a binary tree structure; then, the Orthogonal Least Squares algorithm （OLS） is used to estimate the contribution of the branches of the tree （refer to basic function term that cannot be decomposed anymore according to special rule） to the accuracy of the model, which contributes to eliminate complex redundant subtrees and enhance GP＇s convergence speed; and finally, a simple, reliable and exact linear-in-parameter nonlinear model via GP evolution is obtained. The real aero-engine start process test data simulation and the comparisons with Support Vector Machines （SVM） validate that the proposed method can generate more applicable, interpretable models and achieve comparable, even superior results to SVM. 展开更多
关键词 aerospace propulsion system linear-in-parameter nonlinear model Parsimonious Genetic Programming （PGP） aero-engine dynamic start model
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Max-plus-linear model-based predictive control for constrained hybrid systems: linear programming solution 认领 引用
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作者 Yuanyuan ZOU Shaoyuan LI 《控制理论与应用（英文版）》 2007年第1期71-76,共6页
In this paper, a linear programming method is proposed to solve model predictive control for a class of hybrid systems. Firstly, using the （max, ＋） algebra, a typical subclass of hybrid systems called max-plus-line... In this paper, a linear programming method is proposed to solve model predictive control for a class of hybrid systems. Firstly, using the （max, ＋） algebra, a typical subclass of hybrid systems called max-plus-linear （MPL） systems is obtained. And then, model predictive control （MPC） framework is extended to MPL systems. In general, the nonlinear optimization approach or extended linear complementarity problem （ELCP） were applied to solve the MPL-MPC optimization problem. A new optimization method based on canonical forms for max-min-plus-scaling （MMPS） functions （using the operations maximization, minimization, addition and scalar multiplication） with linear constraints on the inputs is presented. The proposed approach consists in solving several linear programming problems and is more efficient than nonlinear optimization. The validity of the algorithm is illustrated by an example. 展开更多
关键词 Hybrid systems Max-plus-linear systems Model predictive control Canonical form Max-min-plus- scaling function Linear programming
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Mixed-integer Linear Programming Based Distribution Network Reconfiguration Model Considering Reliability Enhancement 认领 引用 被引量：2
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作者 Junpeng Zhu Yi Zhou +3 位作者 Xiaofeng Dong Li Zhou Qiong Zhu Yue Yuan 《CSEE Journal of Power and Energy Systems》 SCIE EI CSCD 2025年第3期1336-1346,共11页
With the reform of the power system further deepening,the reliance on electricity and importance attached to the reliable power supply are increasing year by year,and the establishment of a high resilient power system... With the reform of the power system further deepening,the reliance on electricity and importance attached to the reliable power supply are increasing year by year,and the establishment of a high resilient power system has considerable economic,environmental and social benefits.Reconfiguring the network is one of the well-known tactics to enhance reliability.Accordingly,this paper proposes a reconfiguration method of distribution network considering the enhancement of reliability,which reconfigures the network structure both under normal operation conditions and outage scenarios,and considers factors such as power loss,load distribution and voltage quality considered in conventional reconfiguration methods.In this paper,the reliability assessment is integrated into the process of distribution network reconfiguration by using binary variables to represent the operating state of switchable devices.Based on the concept of fictitious fault flows,the reliability indices of distribution network are linearized expressed,and the network loss is reduced by minimizing the voltage deviation.A mixed integer linear programming(MILP)model is established for distribution network reconfiguration problem,which can guarantee the global optimal solution with high solution efficiency.Finally,the applicability and effectiveness of the proposed method are verified by numerical tests on a 54-node test system. 展开更多
关键词 Distribution network reconfiguration fictitious fault flows and mixed-integer linear programming reliability enhancement
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Approximate Solutions for a Class of Fractional-Order Model of HIV Infection via Linear Programming Problem 认领 引用
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作者 Samaneh Soradi Zeid Mostafa Yousefi Ali Vahidian Kamyad 《American Journal of Computational Mathematics》 2016年第2期141-152,共12页
In this paper, we provide a new approach to solve approximately a system of fractional differential equations (FDEs). We extend this approach for approximately solving a fractional-order differential equation model of... In this paper, we provide a new approach to solve approximately a system of fractional differential equations (FDEs). We extend this approach for approximately solving a fractional-order differential equation model of HIV infection of CD4+T cells with therapy effect. The fractional derivative in our approach is in the sense of Riemann-Liouville. To solve the problem, we reduce the system of FDE to a discrete optimization problem. By obtaining the optimal solutions of new problem by minimization the total errors, we obtain the approximate solution of the original problem. The numerical solutions obtained from the proposed approach indicate that our approximation is easy to implement and accurate when it is applied to a systems of FDEs. 展开更多
关键词 Riemann-Liouville Derivative Fractional HIV Model Optimization Linear Programming Discritezation
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Application of Linear Programming Model to Refugee Migrating Problem 认领 引用
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作者 Chongyu Jiang Xiaorong Li Yandong Li 《Journal of Applied Mathematics and Physics》 2016年第5期967-977,共11页
The refugee immigration problem can be considered as a special “transportation problem”. Linear Programming Model is built, where two objectives with weight in the objective function, for the shortest routes that th... The refugee immigration problem can be considered as a special “transportation problem”. Linear Programming Model is built, where two objectives with weight in the objective function, for the shortest routes that the refugees go along and the minimum number of refugees stayed in each country. An example of EU is introduced and calculated on Lingo software. The results show that the model is available to solve the refugee immigration problem in different scale. 展开更多
关键词 Refugee Linear Programming Model Optimal Solution
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A Weighted Goal Programming Model for the DASH Diet Problem: Comparison with the Linear Programming DASH Diet Model 认领 引用
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作者 Anayo Charles Iwuji Emeka Uchendu Agwu 《American Journal of Operations Research》 2017年第5期307-322,共16页
A Linear Programming DASH diet model for persons with hypertension has previously been formulated and daily minimum cost diet plans that satisfy the DASH diets’ tolerable intake level of the nutrients for 1500 mg a d... A Linear Programming DASH diet model for persons with hypertension has previously been formulated and daily minimum cost diet plans that satisfy the DASH diets’ tolerable intake level of the nutrients for 1500 mg a day Sodium level and different daily calorie levels were obtained using sample foods from the DASH diet eating plan chart. But the limitation in the use of linear programming model in selecting diet plans to meet specific nutritional requirements which normally results in the oversupply of certain nutrients was evident in the linear programming DASH diet plan obtained as the nutrient level of the diet plans obtained had wide deviations of from the DASH diets’ tolerable upper and lower intake level for the given calorie and sodium levels. Hence the need for a model that gives diet plans with minimized nutrients’ level deviations from the DASH diets’ tolerable intake level for different daily calorie and sodium level at desired cost. A weighted Goal Programming DASH diet model that minimizes the daily cost of the DASH eating plan as well as deviations of the diets’ nutrients content from the DASH diet’s tolerable intake levels is hereby presented in this work. The formulated weighted goal programming DASH diet model is further illustrated using chosen sample foods from the DASH food chart as used in the work on the linear programming DASH diet model for a 1500 mg sodium level and 2000 calories a day diet plan as well as for 1800, 2200, 2400, 2600, 2800 and 3000 daily calorie levels. A comparison of the DASH nutrients’ composition of the weighted Goal Programming DASH diet plans and those of the linear programming DASH diet plans were carried out at this sodium level and the different daily calorie levels. It was evident from the results of the comparison that the weighted goal programming DASH diet plans has minimized deviations from the DASH diet’s tolerable intake levels than those of the linear programming DASH diet plans. 展开更多
关键词 DASH (Dietary Approaches to Stop Hypertension) Diet Model Hypertension Diet Model Minimum Nutrient Deviation Diet Plan Weighted Goal Programming Diet Model Linear and Goal Programming Comparison
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Managing Tourism Development in the Dutch City of Utrecht using a Linear Programming Model of the Tourist Carrying Capacity 认领 引用
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作者 让·范·德·博格 《全球城市研究（中英文）》 2021年第3期13-26,F0002,186,187,共14页
As one part of the Landstad International Metropolitan Area,Utrecht has become known as one of the best tourist destinations in recent years,with the rapid growth of worldwide travel trends.In this paper,through the a... As one part of the Landstad International Metropolitan Area,Utrecht has become known as one of the best tourist destinations in recent years,with the rapid growth of worldwide travel trends.In this paper,through the adaption of the linear programming model,the paper intends to not only quantify the optimum number of visitors to Utrecht but also formulate a number of policy recommendations based on the reconstruction of this optimum.The paper draws the following conclusions:(1) tourist carrying capacity of Utrecht is not yet exceeded;(2) restrictive accommodation policy does not currently seem necessary;(3) the cultural-historical attractions are not yet optimally used;(4) investing in strategic provisions is currently not necessary.And from the conclusion,the paper further puts forward the following suggestions on the city’s tourism development strategy:(1) to identify "tourist flood plains";(2) to encourage the tourist disclosure of these alternatives;(3) to invest even more explicitly in residential tourism and,where possible,curb day tourism;(4) to introduce a new business model. 展开更多
关键词 Utrecht Tourism Carrying Capacity Linear Programming Model Sustainable Development of Tourism
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Linear Programs in Cost Accounting: A Linear Cost Model 认领 引用
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作者 Gurhan Uysal 《Journal of Modern Accounting and Auditing》 2014年第1期55-58,共4页
This paper aims to find unit cost of a product for firms. It establishes a linear cost model to find unit cost. Linear goal programs assume a direct relationship between independent variable and dependent variable. De... This paper aims to find unit cost of a product for firms. It establishes a linear cost model to find unit cost. Linear goal programs assume a direct relationship between independent variable and dependent variable. Dependent variable of linear model is unit cost. Independent variables are cost accounting variables. They are supply cost, labor cost, and administration cost. This study assumes a direct relationship between supply-labor-administration costs and unit cost. Therefore, it establishes a linear cost model. The major research question of this study is to apply linear goal programming to cost accounting. The goal of this linear program is to find unit cost of product. This study uses quantitative method and human capital method. The main research result is linear costing model itself. 展开更多
关键词 linear programs cost accounting unit cost linear cost model
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Application of Linear Programming Algorithm in the Optimization of Financial Portfolio of Golden Guinea Breweries Plc, Nigeria 认领 引用
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作者 Emmanuel Nwabueze Ekwonwune Dominic Chukwuemeka Edebatu 《Open Journal of Modelling and Simulation》 2016年第3期93-101,共9页
In this study, Simplex Method, a Linear Programming technique was used to create a mathematical model that optimized the financial portfolio of Golden Guinea Breweries Plc, Nigeria. This work was motivated by the obse... In this study, Simplex Method, a Linear Programming technique was used to create a mathematical model that optimized the financial portfolio of Golden Guinea Breweries Plc, Nigeria. This work was motivated by the observed and anticipated miscalculations which Golden Guinea Breweries was bound to face if appropriate linear programming techniques were not applied in determining the profit level. This study therefore aims at using Simplex Method to create a Mathematical Model that will optimize the production of brewed drinks for Golden Guinea Breweries Plc. The first methodology involved the collection of sample data from the company, analyzed and the relevant coefficients were deployed for the coding of the model. Secondly, the indices collected from the first method were deployed in the software model called PHP simplex, an online software for solving Linear Programming Problem to access the profitability of the organization. The study showed that Linear Programming Model would give a high profit coefficient of N9,190,862,833 when compared with the result obtained from the manual computation which gave a profit coefficient of N7,172,093,375. Also, Bergedoff Lager, Eagle Stout and Bergedoff Malta were found not to contribute to overall profitability of the company and it was therefore recommended that their productions should be discontinued. It also recommends that various quantities of Golden Guinea Lager (1 × 12) and Golden Guinea Lager (1 × 24) should be produced. 展开更多
关键词 Optimization Linear Programming Model Products Software Linear Programming Model
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An Integer Programming Approach for Scheduling a Professional Sports League 认领 引用
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作者 Vardges Melkonian 《American Journal of Computational Mathematics》 2024年第4期401-423,共23页
This paper gives integer linear programming (ILP) models for scheduling the League Phase of one of the most popular professional club competitions in the world, UEFA Champion’s League. There are 36 teams in the compe... This paper gives integer linear programming (ILP) models for scheduling the League Phase of one of the most popular professional club competitions in the world, UEFA Champion’s League. There are 36 teams in the competition, but each team plays only 8 other teams in the League Phase. Thus, the difficulty or ease of a team’s opponents, known as strength of schedule (SOS), compared to other teams will be different. Our main ILP model aims to minimize the maximum difference between SOS of any two teams, thus making the schedule as fair as possible. We also give a model for creating a timetable of all the matchups obtained by the first model. The models were implemented and tested using optimization software AMPL. Our main model obtained a schedule with a difference 0.4 between the highest and the lowest SOS, while that difference is 19 for the actual 2024-2025 competition. Thus, our model returns a schedule that is significantly fairer compared to the actual competition. 展开更多
关键词 Sport Scheduling Optimization Modeling Integer Linear Programming
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Integer Programming Formulations for Maximum Lifetime Broadcasting Problems in Wireless Sensor Networks 认领 引用
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作者 Roberto Montemanni 《Wireless Sensor Network》 2010年第12期924-935,共12页
Approaches based on integer linear programming have been recently proposed for topology optimization in wireless sensor networks. They are, however, based on over-theoretical, unrealistic models. Our aim is to show th... Approaches based on integer linear programming have been recently proposed for topology optimization in wireless sensor networks. They are, however, based on over-theoretical, unrealistic models. Our aim is to show that it is possible to accommodate realistic models for energy consumption and communication protocols into integer linear programming. We analyze the maximum lifetime broadcasting topology problem and we present realistic models that are also shown to provide efficient and practical solving tools. We present a strategy to substantially speed up the convergence of the solving process of our algorithm. This strategy introduces a practical drawback, however, in the characteristics of the optimal solutions retrieved. A method to overcome this drawback is discussed. Computational experiments are reported. 展开更多
关键词 Sensor Networks Mixed Integer Linear Programming Energy Models Topology Optimization
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考虑AI大模型的多维网络安全度量及主动防御策略 认领 引用 被引量：2
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作者 徐胜超 蒋大锐 吕峻闽 《计算机技术与发展》 2026年第3期215-220,F0003,共6页
利用单一维度表征网络安全状态的参量进行度量时,参量的畸变会引起度量误差,导致生成的防御策略难以保障攻击场景下网络的安全。为此,论文引入AI大模型对多维网络安全进行度量,并生成主动防御策略。从主机状态和网络状态两个角度出发,在... 利用单一维度表征网络安全状态的参量进行度量时,参量的畸变会引起度量误差,导致生成的防御策略难以保障攻击场景下网络的安全。为此,论文引入AI大模型对多维网络安全进行度量,并生成主动防御策略。从主机状态和网络状态两个角度出发,在7个维度上对表征网络安全状态的参量进行量化,并拟合权重输出网络安全度量结果,避免了单一维度参量畸变引起的度量误差。利用整数线性规划的方式对网络切片进行部署时,将安全度量值最大值化作为目标函数,在AI大模型下更新网络切片迁移结果,直至目标函数达到收敛,输出主动防御策略。仿真结果中,设计技术在实现对网络安全状态准确度量的基础上,生成的主动防御策略能够有效降低攻击的成功率,攻击类型为数据泄露时,该方法的主动防御策略生成耗时仅为21 ms,节点数量为30个时,该方法的攻击成功率为2.3%,表明该方法防御策略效果好。 展开更多
关键词 AI大模型 多维网络安全度量 主动防御策略 整数线性规划 目标函数 网络切片迁移
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线性最大熵在DEM插值中的适用性 认领 引用
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作者 贾相苹 陈天伟 +1 位作者 刘鹏 刘晋 《桂林理工大学学报》 CAS 北大核心 2026年第1期77-82,共6页
为了进一步改善DEM插值算法的精度和效率,针对最大熵模型插值法结果不唯一、运算速度慢等相关问题,提出线性最大熵模型算法。该方法将最大熵模型中代表空间域变量的产生概率值P作为展开点对熵函数进行泰勒展开,再将展开后得到的线性公... 为了进一步改善DEM插值算法的精度和效率,针对最大熵模型插值法结果不唯一、运算速度慢等相关问题,提出线性最大熵模型算法。该方法将最大熵模型中代表空间域变量的产生概率值P作为展开点对熵函数进行泰勒展开,再将展开后得到的线性公式作为目标函数,利用样本点高程值的数学期望和方差建立等式约束条件,根据地物在空间上具有一定的相关性,设立最大、最小权不等式约束条件,通过最大熵值来求解格网DEM插值的权系数从而确定待定点的高程值。利用MATLAB中的Linprog函数对线性最大熵模型进行解算,并与最大熵模型算法和反距离加权法进行对比检验,结果表明:相较于另外两种方法,其精度和运算速度都是最优的,故而线性最大熵模型算法在DEM插值中有较好的适用性。 展开更多
关键词 最大熵模型 线性规划 DEM插值 效率 约束条件
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基于混合整数线性规划的人机协作柔性流水车间调度问题集成优化框架 认领 引用
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作者 王闻杰 原震罡 +7 位作者 郑文刚 崔凯 张洪浩 郭兴召 时建纬 田志强 张超勇 田广东 《北京理工大学学报》 EI CAS CSCD 北大核心 2026年第4期367-378,共12页
人机协作(human-machine collaboration,HMC)是一种具有广阔前景和重要性的生产模型,它同时结合了工人柔性优点和机器高效率的优点.为了获取最优精确解,针对人机协作柔性流水车间调度问题(human-machine collaborative flexible flow sh... 人机协作(human-machine collaboration,HMC)是一种具有广阔前景和重要性的生产模型,它同时结合了工人柔性优点和机器高效率的优点.为了获取最优精确解,针对人机协作柔性流水车间调度问题(human-machine collaborative flexible flow shop scheduling problem,HMC-FFSP)建立了一个基于混合整数线性规划(mixed-integer linear programming,MILP)的集成优化框架,包含了3种建模思想:相邻序列建模思想、序列建模思想、时间建模思想,其中序列建模思想有2个变种.首先分析了HMC-FFSP问题特性,然后基于不同建模思想,通过设计不同离散决策变量、连续决策变量及约束集,构建了4种MILP模型.本文还设计了小规模和大规模算例,并从规模复杂度和计算复杂度2个方面来对比这些MILP模型,例如0-1布尔决策变量、连续决策变量、求解时间、约束总数等.实验结果验证了所提出的4种MILP在求解HMC-FFSP问题的可行性和有效性,并发现基于序列的建模思想表现最优,基于相邻序列的建模模型表现次之,基于时间的建模思想表现最差.最后,对实验结果进行了Wilcoxon符号秩检验和配对样本t检验等统计学分析,进一步增强了结论的可靠性. 展开更多
关键词 柔性流水车间调度 人机协作 混合整数线性规划 模型复杂度 精确算法
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考虑SAEV充电需求的车队动态调度与配套设施布局协同优化模型 认领 引用
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作者 韩飞 曹万彪 +2 位作者 王建 李岩 孙超 《交通运输工程学报》 EI CAS CSCD 北大核心 2026年第6期198-208,共11页
为实现共享自动驾驶电动汽车(SAEV)的车队调度与配套设施布局协同优化,构建了SAEV车队规模、车队行驶总距离、乘客总出行时间以及充电停车设施建设成本最小化的多目标非线性规划模型;该模型基于时间扩展网络描述乘客动态OD出行需求、SAE... 为实现共享自动驾驶电动汽车(SAEV)的车队调度与配套设施布局协同优化,构建了SAEV车队规模、车队行驶总距离、乘客总出行时间以及充电停车设施建设成本最小化的多目标非线性规划模型;该模型基于时间扩展网络描述乘客动态OD出行需求、SAEV车队的动态调度策略以及乘客流的时空位移变化,并利用网络中节点、边的容量限制,分别刻画了交通小区内充电停车设施和连接道路上的拥堵效应;区别于传统模型,该模型考虑了SAEV车队的充电需求、充电/营业SAEV车流与乘客流的动态守恒关系、拼车乘客数量限制以及配套设施容量限制等约束;为提高模型求解效率,采用线性近似与线性等价技术将模型重构为混合整数线性规划模型,并采用Epsilon约束法求解多目标模型的帕累托最优解;采用成都市路网出行数据对模型有效性进行了验证,并针对不同拼车乘客数量、车队充电需求比例进行了情景对比分析。研究结果表明:当拼车乘客数量从1人增加至4人,车队行驶总距离减少77.87%,车队规模减小88.56%,配套设施建设成本减少96.80%,但乘客总出行时间增加125.46%,表明运营商应选取合适的拼车策略以保证乘客出行效率;当SAEV车队充电需求比例从30%降低至5%,车队行驶总距离降低10.77%,运营商车队规模降低3.69%,配套设施建设成本与乘客出行总时间保持不变,表明提升SAEV续航性能在提高车队运输效率、降低SAEV车队运营成本方面具有较大潜力。 展开更多
关键词 交通工程 共享自动驾驶电动汽车 混合整数非线性规划模型 车队运营调度 线性化技术 设施布局
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考虑碳排放的多港区异构拖轮调度优化研究 认领 引用
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作者 初良勇 林嘉辰 张一鸣 《中国航海》 CSCD 北大核心 2026年第4期88-97,共10页
随着港口设备的绿色转型,拖轮调度问题面临着新的机遇与挑战。一方面新能源拖轮的投用有利于降低港口作业成本与碳排放量,另一方面当前针对新能源拖轮的研究较为匮乏。针对这一研究局限,根据混合动力拖轮的特征,以船舶在港成本、拖轮作... 随着港口设备的绿色转型,拖轮调度问题面临着新的机遇与挑战。一方面新能源拖轮的投用有利于降低港口作业成本与碳排放量,另一方面当前针对新能源拖轮的研究较为匮乏。针对这一研究局限,根据混合动力拖轮的特征,以船舶在港成本、拖轮作业成本及碳排放成本最小化为目标构建了多港区背景下的异构拖轮调度混合整数线性规划模型。针对模型的特点,采用嵌入特定启发式规则的多元宇宙优化(MVO)算法进行求解,在小规模算例上通过与Gurobi对比验证了算法的有效性与准确性,在大规模算例求解中平均可求出优于遗传算法(GA)与改进遗传算法(IGA)4%与3.25%的目标值。研究结果显示:配置大功率的拖轮可有效降低船舶在港成本与拖轮作业成本,但大功率拖轮数量过多时会相对增加拖轮的作业成本,此时适当配置较小功率的拖轮可以发挥出其作业成本低的优势;有效配置一定数量的混合动力拖轮可以降低总调度成本及拖轮碳排放成本,同时拖轮碳排放成本所占作业成本的比例可以从8%不断降低至约1.51%。 展开更多
关键词 绿色航运 拖轮调度 多元宇宙优化算法 混合动力拖轮 混合整数线性规划模型
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磨煤系统的实用型预测控制算法及应用 认领 引用
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作者 张国民 李强 +3 位作者 李天义 杨建明 李林 张登峰 《控制工程》 CSCD 北大核心 2026年第7期1181-1188,共8页
磨煤系统是煤气化生产过程中典型的多变量、强耦合、复杂非线性系统,应用传统控制技术难以达到期望的性能。针对磨煤过程参量信号波动大、I/O变量约束多、控制时效性强、能耗要求高等特点,提出了一种实用型模型预测控制算法,将常规算法... 磨煤系统是煤气化生产过程中典型的多变量、强耦合、复杂非线性系统,应用传统控制技术难以达到期望的性能。针对磨煤过程参量信号波动大、I/O变量约束多、控制时效性强、能耗要求高等特点,提出了一种实用型模型预测控制算法,将常规算法的二次型优化目标函数转化为加权线性函数提高在线计算效率,加入输入速率约束和软约束因子减小信号波动、降低系统能耗,保证在线控制的连续性和性能要求。MATLAB仿真验证了实用型算法的可行性。工程应用表明,该算法可使磨煤装置单位能耗降低11.7%,稳态运行的主要指标优于传统控制策略,具有良好的实用性。 展开更多
关键词 磨煤系统 先进控制 模型预测控制技术 LP问题 软约束
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多源不确定环境下物流中心选址与流量分配问题的区间模糊优化 认领 引用
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作者 葛岩 孙岩 李雪飞 《物流科技》 2026年第3期11-15,41,共5页
以物流网络建设运营总成本最低为目标,研究了三级物流网络中物流中心选址与流量分配问题。考虑到物流优化的提前性,为了提高优化的可靠性,从能力、需求、成本出发,系统规划了物流中心选址与流量分配问题面临的多源不确定性。在采用区间... 以物流网络建设运营总成本最低为目标,研究了三级物流网络中物流中心选址与流量分配问题。考虑到物流优化的提前性,为了提高优化的可靠性,从能力、需求、成本出发,系统规划了物流中心选址与流量分配问题面临的多源不确定性。在采用区间模糊数刻画不确定参数的基础上,构建了问题的区间模糊混合整数线性规划模型,进而对模型进行清晰化处理,使得问题优化可解。同时,清晰化模型引入的满意水平能够衡量物流中心选址与流量分配优化方案的可靠性。文章采用算例验证了优化模型的可行性,分析指出物流中心选址与流量分配优化方案的经济性和可靠性是互相矛盾的,提高优化方案的可靠性必然会导致其总成本的提高。算例进一步定义了区间模糊参数的不确定水平,揭示了降低区间模糊参数的不确定水平能够在保证高可靠性的条件下降低物流中心选址与流量分配优化方案的总成本。 展开更多
关键词 物流中心选址 流量分配 多源不确定性 区间模糊数 线性规划模型 不确定水平
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本科人才培养方案的评价模型构建——以国家一流专业自动化为例 认领 引用
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作者 黄绿娥 范洪海 +2 位作者 黄志繁 鄢化彪 吴健 《高教学刊》 2026年第5期38-41,共4页
新时代我国高等教育迈向高质量发展阶段,针对《普通高等学校本科专业类教学质量国家标准》下如何评估高校人才培养方案制定的合理性问题,建立模糊层次分析综合评价模型。首先将人才培养方案对标《国标》细化为三个层次、九项指标,通过... 新时代我国高等教育迈向高质量发展阶段,针对《普通高等学校本科专业类教学质量国家标准》下如何评估高校人才培养方案制定的合理性问题,建立模糊层次分析综合评价模型。首先将人才培养方案对标《国标》细化为三个层次、九项指标,通过抽样统计分析得到各项指标的重要性程度,采用正互反矩阵求取指标权重。通过问卷调查得到不同维度的匹配关系,对匹配关系进行模糊评价得出每项指标与国标的量化匹配度,最后采用线性综合评价法得到对标国标的人才培养方案合理性评价得分。构建的模型对多所高校的国家级一流专业自动化人才培养方案进行验证,其评价得分符合学校教育评估结果,该模型可作为教育教学审核评估中各高校人才培养方案合理性的评价手段,为科学评价人才培养方案质量提供有效方法。 展开更多
关键词 人才培养方案 国家质量标准 本科教育教学审核评估 模糊层次分析模型 线性综合评价 一致性检验
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