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Generating of Test Data by Harmony Search Against Genetic Algorithms
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作者 Ahmed S.Ghiduk Abdullah Alharbi 《Intelligent Automation & Soft Computing》 SCIE 2023年第4期647-665,共19页
Many search-based algorithms have been successfully applied in sev-eral software engineering activities.Genetic algorithms(GAs)are the most used in the scientific domains by scholars to solve software testing problems.... Many search-based algorithms have been successfully applied in sev-eral software engineering activities.Genetic algorithms(GAs)are the most used in the scientific domains by scholars to solve software testing problems.They imi-tate the theory of natural selection and evolution.The harmony search algorithm(HSA)is one of the most recent search algorithms in the last years.It imitates the behavior of a musician tofind the best harmony.Scholars have estimated the simi-larities and the differences between genetic algorithms and the harmony search algorithm in diverse research domains.The test data generation process represents a critical task in software validation.Unfortunately,there is no work comparing the performance of genetic algorithms and the harmony search algorithm in the test data generation process.This paper studies the similarities and the differences between genetic algorithms and the harmony search algorithm based on the ability and speed offinding the required test data.The current research performs an empirical comparison of the HSA and the GAs,and then the significance of the results is estimated using the t-Test.The study investigates the efficiency of the harmony search algorithm and the genetic algorithms according to(1)the time performance,(2)the significance of the generated test data,and(3)the adequacy of the generated test data to satisfy a given testing criterion.The results showed that the harmony search algorithm is significantly faster than the genetic algo-rithms because the t-Test showed that the p-value of the time values is 0.026<α(αis the significance level=0.05 at 95%confidence level).In contrast,there is no significant difference between the two algorithms in generating the adequate test data because the t-Test showed that the p-value of thefitness values is 0.25>α. 展开更多
关键词 harmony search algorithm genetic algorithms test data generation
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A global harmony search algorithm for finding optimal capacitor location and size in distribution networks 被引量:2
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作者 Reza Sirjani Melkamu Gamene Bade 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第5期1748-1761,共14页
Shunt capacitors are broadly applied in distribution systems to scale down power losses, improve voltage profile and boost system capacity. The amount of capacitors added and location of deployment in the system highl... Shunt capacitors are broadly applied in distribution systems to scale down power losses, improve voltage profile and boost system capacity. The amount of capacitors added and location of deployment in the system highly determine the advantage of compensation. A novel global harmony search(GHS) algorithm in parallel with the backward/ forward sweep power flow technique and radial harmonic power flow was used to investigate the optimal placement and sizing of capacitors in radial distribution networks for minimizing power loss and total cost by taking account load unbalancing, mutual coupling and harmonics. The optimal capacitor placement outcomes show that the GHS algorithm can reduce total power losses up to 60 k W and leads to more than 18% of cost saving. The results also demonstrate that the GHS algorithm is more effective in minimization of power loss and total costs compared with genetic algorithm(GA), particle swarm optimization(PSO) and harmony search(HS) algorithm. Moreover, the proposed algorithm converges within 800 iterations and is faster in terms of computational time and gives better performance in finding optimal capacitor location and size compared with other optimization techniques. 展开更多
关键词 optimal capacitor placement HARMONICS unbalancing harmony search algorithm
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Sensor Layout of Hoisting Machinery Vibration Monitoring Based on Harmony Genetic Search Algorithm 被引量:1
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作者 Guansi Liu Keqin Ding +2 位作者 Hui Jin Fangxiong Tang Li Chen 《Structural Durability & Health Monitoring》 EI 2022年第2期145-161,共17页
With the construction of automated docks,health monitoring technology as a parallel safety assurance technology for unmanned hoisting machinery has become a hot spot in the development of the industry.Hoisting machine... With the construction of automated docks,health monitoring technology as a parallel safety assurance technology for unmanned hoisting machinery has become a hot spot in the development of the industry.Hoisting machinery has a huge structure and numerous welded joints.The complexity and nonlinearity of the welded structure itself makes the structural failure parts random and difficult to arrange for monitoring sensors.In order to solve the problem of effectiveness and stability of the sensor arrangement method for monitoring the structure of hoisting machinery.Using the global and local search capabilities enhanced by the complementary search mechanism,a structural vibration monitoring sensor placement algorithm based on the harmony genetic algorithm is proposed.Firstly,the model is established for modal analysis to obtain the displacement matrix of each mode.Secondly,the optimal parameter combination is established through parameter comparison,and the random search mechanism is used to quickly search in the modal matrix to obtain the preliminary solution,and then the preliminary solution is genetically summed The mutation operation obtains the optimized solution,and the optimal solution is retained through repeated iterations to realize the decision of the vibration sensor layout of the crane structure monitoring.Combining the comparison test of harmony genetic algorithm,harmony search algorithm and genet-ic algorithm,the fitness of harmony genetic algorithm in X,Y and Z directions were 0.0045,0.0084 and 0.0058,respectively,which were all optimal.And the average probability of deviating from the optimal path is 1.10%,19.34%,and 54.43%,which are also optimal.Harmony genetic algorithm has the advantages of simplicity,fastness and strong global search ability,and can obtain better fitness value and better search stability. 展开更多
关键词 Lifting machinery vibration monitoring sensor arrangement harmony genetic search algorithm
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Modeling the Proposal of the Simultaneous Purchases and Sales of Electricity and Gas for the Energy Market in a Microgrid Using the Harmony Search Algorithm
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作者 Zinan Zhou Yirun Chen Wensheng Dai 《Energy Engineering》 EI 2022年第6期2681-2709,共29页
The use of different energy carriers together,known as an energy hub,has been a hot topic of research in recent years amongst scientists and researchers.The term energy hub refers to the simultaneous operation of vari... The use of different energy carriers together,known as an energy hub,has been a hot topic of research in recent years amongst scientists and researchers.The term energy hub refers to the simultaneous operation of various infrastructures for energy generation and transfer,which has gained momentum in the form of microgrids(MGs).This paper introduces a new strategy for the optimal performance of an MG consisting of different energy carriers for each day.In a smart distribution network(DN),MGs can reduce their own costs in the previous-day market by bidding on sales and purchases.The sales and purchases bidding problem is challenging due to different uncertainties,however.This paper proposes a two-stage strategy for making an optimal bid on electricity sales and purchases with electricity and gas price dependency in the previous-day and real-time markets for an energy hub.In this model,the MG behavior regarding the electricity and gas energy sales/purchase,the simultaneous effects of electricity and gas prices,as well as the energy carriers’dependence on one another are all examined.Due to the inherent uncertainty in the sources of clean energy production,the probabilistic model and the production and reduction scenario have been used in the paper to cover this issue.In the proposed grid,energy sales/purchases are presented in a multi-carrier MG in a two-stage model.This model is solved by using the harmony search algorithm in MATLAB.Numeric results demonstrate the benefits of this model in reducing energy hub costs of operation. 展开更多
关键词 Energy management energy market operation multi-carrier microgrids uncertainty harmony search algorithm hsa MICROGRIDS MGs distribution network DN MATLAB
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Annealing Harmony Search Algorithm to Solve the Nurse Rostering Problem
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作者 Mohammed Hadwan 《Computers, Materials & Continua》 SCIE EI 2022年第6期5545-5559,共15页
A real-life problem is the rostering of nurses at hospitals.It is a famous nondeterministic,polynomial time(NP)-hard combinatorial optimization problem.Handling the real-world nurse rostering problem(NRP)constraints i... A real-life problem is the rostering of nurses at hospitals.It is a famous nondeterministic,polynomial time(NP)-hard combinatorial optimization problem.Handling the real-world nurse rostering problem(NRP)constraints in distributing workload equally between available nurses is still a difficult task to achieve.The international shortage of nurses,in addition to the spread of COVID-19,has made it more difficult to provide convenient rosters for nurses.Based on the literature,heuristic-based methods are the most commonly used methods to solve the NRP due to its computational complexity,especially for large rosters.Heuristic-based algorithms in general have problems striking the balance between diversification and intensification.Therefore,this paper aims to introduce a novel metaheuristic hybridization that combines the enhanced harmony search algorithm(EHSA)with the simulated annealing(SA)algorithm called the annealing harmony search algorithm(AHSA).The AHSA is used to solve NRP from a Malaysian hospital.The AHSA performance is compared to the EHSA,climbing harmony search algorithm(CHSA),deluge harmony search algorithm(DHSA),and harmony annealing search algorithm(HAS).The results show that the AHSA performs better than the other compared algorithms for all the tested instances where the best ever results reported for the UKMMC dataset. 展开更多
关键词 harmony search algorithm simulated annealing combinatorial optimization problems TIMETABLING metaheuristic algorithms nurse rostering problems
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Implementing an Optimal Energy Management System for a Set of Microgrids Using the Harmony Search Algorithm
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作者 Xiangjian Shi Teng Liu +1 位作者 WeiMu Jianfeng Zhao 《Energy Engineering》 EI 2022年第5期1843-1860,共18页
A microgrid(MG)refers to a set of loads,generation resources and energy storage systems acting as a controllable load or a generator to supply power and heating to a local area.The MG-generated power management is a c... A microgrid(MG)refers to a set of loads,generation resources and energy storage systems acting as a controllable load or a generator to supply power and heating to a local area.The MG-generated power management is a central topic for MG design and operation.The existence of dispersed generation(DG)resources has faced MG management with new issues.Depending on the level of exchanges between an MG and the main grid,the MG operation states can be divided into independent or grid-connected ones.Energy management in MGs aims to supply power at the lowest cost for optimal load response.This study examines MG energy management in two operational modes of islanded and grid-connected,and proposes a structure with two control layers(primary and secondary)for energy management.At the principal level of control,the energy management system is determined individually for all MG by taking into consideration the probability constraints and RES uncertainty by the Weibull the probability density function(PDF),generation resources’power as well as the generation surplus and deficit of each MG.Then,the information of the power surplus and deficit of each MG must be sent to the central energy management system.To confirm the proposed structure,a case system with two MGs and a condensive load is simulated by using a multi-time harmony search algorithm.Several scenarios are applied to evaluate the performance of this algorithm.The findings clearly show the effectiveness of the proposed system in the energy management of several MGs,leading to the optimal performance of the resources per MG.Moreover,the proposed control scheme properly controls the MG and grid’s performance in their interactions and offers a high level of robustness,stable behavior under different conditions and high quality of power supply. 展开更多
关键词 harmony search algorithm multi-MG system multi-owner systems central and non-central control optimal energy management uncertainty
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Design of Sharp 2D Multiplier-Less Circularly Symmetric FIR Filter Using Harmony Search Algorithm and Frequency Transformation
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作者 Manju Manuel Elizabeth Elias 《Journal of Signal and Information Processing》 2012年第3期344-351,共8页
In this paper, we present a novel and efficient method for the design of a sharp, two dimensional (2D) wideband, circularly symmetric, FIR filter. First of all, a sharp one dimensional (1D) infinite precision FIR filt... In this paper, we present a novel and efficient method for the design of a sharp, two dimensional (2D) wideband, circularly symmetric, FIR filter. First of all, a sharp one dimensional (1D) infinite precision FIR filter is designed using the Frequency Response Masking (FRM) technique. This filter is converted into a multiplier-less filter by representing it in the Canonic Signed Digit (CSD) space. The design of the FRM filter in the CSD space calls for the use of a discrete optimization technique. To this end, a new optimization approach is proposed using a modified Harmony Search Algorithm (HSA). HSA is modified in such a way that, in every exploitation and exploration phase, the candidate solutions turns out to be integers. The 1D FRM multiplier-less filter, is in turn transformed to the 2D equivalent using the recently proposed multiplier-less transformations namely, T1 and T2. These transformations are successful in generating circular contours even for wideband filters. Since multipliers are the most power consuming elements in a 2D filter, the multiplier-less realization calls for reduced power consumption as well as computation time. Significant reduction in the computational complexity and computation time are the highlights of our proposed design technique. Besides, the proposed discrete optimization using modified HSA can be used to solve optimization problems in other engineering disciplines, where the search space consists of integers. 展开更多
关键词 Two Dimensional Filter Frequency Response MASKING harmony search algorithm T1 and T2 TRANSFORMATIONS Canonic SIGNED DIGIT Representation
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Optimization of Thermal Aware VLSI Non-Slicing Floorplanning Using Hybrid Particle Swarm Optimization Algorithm-Harmony Search Algorithm
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作者 Sivaranjani Paramasivam Senthilkumar Athappan +1 位作者 Eswari Devi Natrajan Maheswaran Shanmugam 《Circuits and Systems》 2016年第5期562-573,共12页
Floorplanning is a prominent area in the Very Large-Scale Integrated (VLSI) circuit design automation, because it influences the performance, size, yield and reliability of the VLSI chips. It is the process of estimat... Floorplanning is a prominent area in the Very Large-Scale Integrated (VLSI) circuit design automation, because it influences the performance, size, yield and reliability of the VLSI chips. It is the process of estimating the positions and shapes of the modules. A high packing density, small feature size and high clock frequency make the Integrated Circuit (IC) to dissipate large amount of heat. So, in this paper, a methodology is presented to distribute the temperature of the module on the layout while simultaneously optimizing the total area and wirelength by using a hybrid Particle Swarm Optimization-Harmony Search (HPSOHS) algorithm. This hybrid algorithm employs diversification technique (PSO) to obtain global optima and intensification strategy (HS) to achieve the best solution at the local level and Modified Corner List algorithm (MCL) for floorplan representation. A thermal modelling tool called hotspot tool is integrated with the proposed algorithm to obtain the temperature at the block level. The proposed algorithm is illustrated using Microelectronics Centre of North Carolina (MCNC) benchmark circuits. The results obtained are compared with the solutions derived from other stochastic algorithms and the proposed algorithm provides better solution. 展开更多
关键词 VLSI Non-Slicing Floorplan Modified Corner List (MCL) algorithm Hybrid Particle Swarm Optimization-harmony search algorithm (HPSOHS)
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Harmony Search-Dijkstra混合算法在铁路物流中心分层选址中的应用 被引量:5
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作者 靳国伟 何世伟 +2 位作者 黎浩东 何必胜 殷玮川 《北京交通大学学报》 CAS CSCD 北大核心 2016年第4期45-52,共8页
为了满足铁路集中化运输的要求,基于铁路物流中心的层级特点,结合分层选址的理论和方法,以铁路物流中心覆盖的总需求最大化为目标,提出了铁路物流中心分层选址分配模型.针对铁路物流中心选址分配模型的特点,提出采用求解效率较高的和声... 为了满足铁路集中化运输的要求,基于铁路物流中心的层级特点,结合分层选址的理论和方法,以铁路物流中心覆盖的总需求最大化为目标,提出了铁路物流中心分层选址分配模型.针对铁路物流中心选址分配模型的特点,提出采用求解效率较高的和声搜索算法(Harmony Search,HS)和Dijkstra算法相结合的混合算法进行求解,并通过算例验证了模型的可行性和算法的有效性.为了验证算法的性能,对不同规模下的算法进行多次测试,结果表明当规模较大时,HS-Dijkstra混合算法仍可以在可接受的时间范围内收敛.为了体现算法的计算效率,对大规模下的Harmony Search-Dijkstra混合算法与遗传算法(Genetic Algorithm,GA)进行比较,结果显示Harmony Search-Dijkstra混合算法收敛速度明显优于遗传算法.因此,Harmony Search-Dijkstra混合算法可以有效解决铁路物流中心选址分配问题. 展开更多
关键词 铁路运输 选址分配 和声搜索算法 DIJKSTRA算法 铁路物流中心 分层覆盖
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Harmony search optimization applied to reservoir engineering assisted history matching 被引量:1
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作者 SHAMS Mohamed EL-BANBI Ahmed SAYYOUH Helmy 《Petroleum Exploration and Development》 2020年第1期154-160,共7页
Based on the analysis of characteristics and advantages of HSO(harmony search optimization) algorithm, HSO was used in reservoir engineering assisted history matching of Kareem reservoir in Amal field in the Gulf of S... Based on the analysis of characteristics and advantages of HSO(harmony search optimization) algorithm, HSO was used in reservoir engineering assisted history matching of Kareem reservoir in Amal field in the Gulf of Suez, Egypt. HSO algorithm has the following advantages:(1) The good balance between exploration and exploitation techniques during searching for optimal solutions makes the HSO algorithm robust and efficient.(2) The diversity of generated solutions is more effectively controlled by two components, making it suitable for highly non-linear problems in reservoir engineering history matching.(3) The integration between the three components(harmony memory values, pitch adjusting and randomization) of the HSO helps in finding unbiased solutions.(4) The implementation process of the HSO algorithm is much easier. The HSO algorithm and two other commonly used algorithms(genetic and particle swarm optimization algorithms) were used in three reservoir engineering history match questions of different complex degrees, which are two material balance history matches of different scales and one reservoir history matching. The results were compared, which proves the superiority and validity of HSO. The results of Kareem reservoir history matching show that using the HSO algorithm as the optimization method in the assisted history matching workflow improves the simulation quality and saves solution time significantly. 展开更多
关键词 RESERVOIR engineering ASSISTED HISTORY matching OPTIMIZATION algorithm harmony search OPTIMIZATION algorithm
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改进的HSA算法在水利工程项目工期—成本优化中的应用研究
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作者 姚悦铃 《浙江水利水电学院学报》 2023年第1期30-35,共6页
为解决工期-成本综合优化问题,对和声搜索算法(Harmony search algorithm,HSA)的参数取值范围进行改进。首先分析了水利工程项目工期与成本估算的影响因素,构建了工期-成本集成管理模型,然后构建BIM模型提取工程量信息,同时对HSA的主要... 为解决工期-成本综合优化问题,对和声搜索算法(Harmony search algorithm,HSA)的参数取值范围进行改进。首先分析了水利工程项目工期与成本估算的影响因素,构建了工期-成本集成管理模型,然后构建BIM模型提取工程量信息,同时对HSA的主要参数记忆库取值概率HMCR与和声微调概率PAR作了改进,使其参数范围更加适应工期—成本模型的取值,整个运行过程耗时短,精度高,模型经过改进后更易于实现运算,并借助MATLAB得到了工期-成本最优解。最后,以某水闸项目为例进行验证,为水利工程项目工期-成本优化探索了新的模式。 展开更多
关键词 水利工程 BIM技术 和声搜索算法(hsa) 多目标优化
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求解燃气轮机制造车间调度的混合和声搜索算法
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作者 李明辉 石宇强 +1 位作者 石小秋 李佳 《工业工程》 2024年第3期106-113,共8页
燃气轮机生产属于典型的离散型制造,其多品种小批量的生产特点给车间作业调度带来挑战,导致企业生产效率低下,不能满足产品交货期。因和声搜索算法结构简单易操作,常用于解决此类作业车间调度问题。然而传统和声搜索算法收敛速度较慢,... 燃气轮机生产属于典型的离散型制造,其多品种小批量的生产特点给车间作业调度带来挑战,导致企业生产效率低下,不能满足产品交货期。因和声搜索算法结构简单易操作,常用于解决此类作业车间调度问题。然而传统和声搜索算法收敛速度较慢,易陷入局部最优。本文构建以最小化最大完工时间为目标的燃气轮机制造车间调度数学模型,提出一种离散型改进多种群混合和声搜索算法进行求解。结合和声搜索算法与变邻域搜索算法的优点,采用基于工序的编码方式进行编码,在种群更新部分引入模拟退火的Metropolis接受准则,提高种群多样性;提出自适应的记忆库保留概率和音调调节率来调节参数,以提高算法的全局寻优能力;加入变邻域搜索以提高算法的收敛速度。通过性能测试及实例验证表明,相较于已有算法,所提算法具有更好的性能。 展开更多
关键词 燃气轮机制造车间调度 和声搜索算法(HS) 变邻域搜索(VNS) METROPOLIS准则
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面向个性化需求的燃料电池测试台价值评估方法
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作者 钟频 闫浩鹏 +1 位作者 袁小芳 谭伟华 《湖南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2024年第8期91-100,共10页
针对不同个性化需求的燃料电池测试台(fuel cell test bench,FCTB)难以评价和量化评估的问题,提出一种基于改进和声搜索算法的FCTB价值评估方法.针对不同FCTB的个性化需求,建立了FCTB综合评估指标体系;结合用户的个性化需求,采用模糊层... 针对不同个性化需求的燃料电池测试台(fuel cell test bench,FCTB)难以评价和量化评估的问题,提出一种基于改进和声搜索算法的FCTB价值评估方法.针对不同FCTB的个性化需求,建立了FCTB综合评估指标体系;结合用户的个性化需求,采用模糊层次分析法分配指标权重,构建价值定量评估模型,将权重求取问题转换为约束优化问题;提出一种改进和声搜索算法对问题进行求解,通过设计解向量生成机制和参数自适应调整策略,用于提高传统和声搜索算法的求解效率和搜索能力.仿真结果表明,本文方法在计算效率和精度方面具有优势,并能够根据不同的需求特性实现对FCTB方案做出定量的价值评估. 展开更多
关键词 燃料电池测试台 价值评估 改进和声搜索算法 模糊层次分析法
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基于改进和声搜索的配电网WSNs多路径QoS路由算法 被引量:1
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作者 杨佳 季泽宇 +1 位作者 王佳豪 彭瑞召 《电气工程学报》 CSCD 北大核心 2024年第1期272-280,共9页
针对智能配电网(Smart distribution network,SDN)中无线通信数据传输不可靠且网络寿命低等问题,提出一种基于改进和声搜索的无线传感器网络(Wireless sensor networks,WSNs)多路径QoS路由算法(Multipath QoS routing algorithm,MQRA)... 针对智能配电网(Smart distribution network,SDN)中无线通信数据传输不可靠且网络寿命低等问题,提出一种基于改进和声搜索的无线传感器网络(Wireless sensor networks,WSNs)多路径QoS路由算法(Multipath QoS routing algorithm,MQRA)。首先,分析配电网的通信需求并建立数据传输模型;然后,针对无线传感器路由问题的特点对和声搜索算法(Harmony search,HS)做出改进;再将其自适应参数公式进行改进以避免算法陷入局部最优;通过在源节点与目的节点之间构建前传区域来优化转发节点集以避免数据回传,提升算法的运行效率;最后,在初始和声库生成阶段,综合考虑距离、丢包率以及节点剩余能量来改进轮盘法中的概率公式。仿真结果表明MQRA算法能有效降低数据传输的时延,提升数据可靠性并均衡节点能耗延长网络使用寿命。 展开更多
关键词 无线传感器网络 智能配电网 和声搜索 路由算法 服务质量
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基于IHSA_LSSVM的供应链绩效评估研究 被引量:2
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作者 路世昌 袁铎宁 杨晓陶 《计算机工程》 CAS CSCD 2014年第6期291-294,共4页
为有效评估供应链绩效,结合和声搜索算法(IHSA)与最小二乘支持向量机,提出一种评估算法(IHS_LSSVM)。研究和声搜索算法的原理,对基音调整概率和基音调整步长进行动态调整,给出一种改进的和声搜索算法。利用该算法的全局搜索能力优化选取... 为有效评估供应链绩效,结合和声搜索算法(IHSA)与最小二乘支持向量机,提出一种评估算法(IHS_LSSVM)。研究和声搜索算法的原理,对基音调整概率和基音调整步长进行动态调整,给出一种改进的和声搜索算法。利用该算法的全局搜索能力优化选取LSSVM的惩罚因子r和高斯核函数的半径σ。采用供应链绩效评估实例,构建供应链评估模型。仿真实验结果表明,与已有的BP神经网络和LSSVM等评估算法相比,IHS_LSSVM具有更小的预测误差和更高的预测精度。 展开更多
关键词 和声搜索算法 最小二乘支持向量机 供应链绩效评估 评估模型
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基于混合和谐搜索算法的自压滴灌田间管网多目标优化设计
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作者 李千禧 何武全 +1 位作者 李渤 蔡明科 《节水灌溉》 北大核心 2024年第6期40-45,共6页
为了综合考虑管网投资和水压分布,合理进行管网布置和管径选择,以满足管网的经济性和可靠性,使自压滴灌管网系统达到投资最低和灌水均匀度最高的目的。以管网投资最低(管网经济性)和节点富余水头均值最小(管网可靠性)为目标,建立了自压... 为了综合考虑管网投资和水压分布,合理进行管网布置和管径选择,以满足管网的经济性和可靠性,使自压滴灌管网系统达到投资最低和灌水均匀度最高的目的。以管网投资最低(管网经济性)和节点富余水头均值最小(管网可靠性)为目标,建立了自压滴灌“梳子”形和“丰字”形田间管网系统的多目标优化数学模型,提出了混合和谐搜索算法求解多目标优化模型的方法和步骤。以新疆某自压滴灌工程为例,采用该方法对其田间管网系统进行优化,优化方案的管网总投资为47.63万元,与原设计方案相比降低了9.86%;管网节点富余水头均值为8.87 m,与原设计方案相比降低了28.37%。该优化设计方法得到的优化结果,不仅节省投资明显,而且节点富余水头均值显著减小,说明管网系统的压力偏差小,灌水的均匀度显著提高。优化结果表明,混合和谐搜索算法收敛速度快,计算精度高,在自压滴灌管网的多目标优化设计中具有很好的应用价值。 展开更多
关键词 自压滴灌 田间管网系统 管网经济性 管网可靠性 混合和谐搜索算法 多目标优化设计
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基于改进和声搜索算法的移动机器人调度
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作者 刘忠璞 刘建娟 +1 位作者 姬淼鑫 许强伟 《科学技术与工程》 北大核心 2024年第20期8558-8567,共10页
为了提高药物管理系统中移动机器人集群调度的速度和精度,建立一种以移动机器人为载体的集群调度模型,并采用离散-连续双映射编码方式进行调度编码。为了提高调度算法解算性能,提出一种融合最优估计优化方法的改进和声搜索(improved har... 为了提高药物管理系统中移动机器人集群调度的速度和精度,建立一种以移动机器人为载体的集群调度模型,并采用离散-连续双映射编码方式进行调度编码。为了提高调度算法解算性能,提出一种融合最优估计优化方法的改进和声搜索(improved harmony search,IHS)算法,结合最优迭代和有向搜索进行调度最优搜索,提高算法的计算速度和精度;根据全局最优和声进行自适应带宽调整和全随机交叉变异,扩大算法搜索范围和样本多样性,提高算法搜索和计算全局最优解的能力;同时,使用标准测试函数进行改进算法在连续区间上的验证,效果良好。对比试验结果表明,同一测试条件下,所提改进算法和对照算法相比具有更加优异的最优解搜索能力,调度结果精确度均有不同程度提高。可见,IHS算法对于优化自动药物系统调度系统性能具备良好的效果。 展开更多
关键词 药物管理系统 移动机器人 集群调度 和声搜索(HS)算法
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改进的BP神经网络在精益建造体系下的施工进度预测 被引量:1
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作者 张挪威 林后来 +3 位作者 王广兴 彭国平 王玺德 陈芝琦 《工程管理学报》 2024年第3期105-110,共6页
针对基于位置管理系统(LBMS)中预测计划精细化程度低的问题,依靠和声搜索算法(HS)优化BP神经网络的权重和阈值,结合实际施工进度信息,构建了基于HS-BP神经网络的LBMS框架,对施工进度计划精准预测。并以广联达华南总部基地项目中梁板模... 针对基于位置管理系统(LBMS)中预测计划精细化程度低的问题,依靠和声搜索算法(HS)优化BP神经网络的权重和阈值,结合实际施工进度信息,构建了基于HS-BP神经网络的LBMS框架,对施工进度计划精准预测。并以广联达华南总部基地项目中梁板模板施工进度为例,验证了HS-BP神经网络的预测精度,同时绘制了梁板模板的实际计划和预测计划的流线图,说明了基于HS-BP神经网络的LBMS框架的可靠性。 展开更多
关键词 精益建造 基于位置管理系统 BP神经网络 和声搜索算法 预测计划
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改进和声搜索算法的配电网智能规划研究
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作者 曹茜 于志勇 +2 位作者 荆世博 李忠政 王威 《自动化技术与应用》 2024年第7期79-83,共5页
为提高配电网运行的经济性、可靠性,提出基于改进和声搜索算法的配电网智能规划方法。采用线性潮流计算模式分析配电网当前负荷数据变化状态,以负荷数据作为配电网多目标规划基础,采用网损、开关动作次数最小化、电压平稳定最大化作为... 为提高配电网运行的经济性、可靠性,提出基于改进和声搜索算法的配电网智能规划方法。采用线性潮流计算模式分析配电网当前负荷数据变化状态,以负荷数据作为配电网多目标规划基础,采用网损、开关动作次数最小化、电压平稳定最大化作为目标函数设计配电网多目标智能规划模型,使用改进和声算法以模型进行求解,得到最优配电网多目标智能规划方案。测试结果表明,所提方法可准确计算配电网当前电压幅值与电压相角数据,配电网无功优化容量补偿后,网损与开关动作次数均减小,电压平稳定得以保证。 展开更多
关键词 和声搜索算法 配电网 智能 规划 线性潮流计算
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基于改进和声搜索的地铁通风策略优化
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作者 李政普 《计算机测量与控制》 2024年第6期256-261,325,共7页
中国城市轨道交通正处于快速建设中,进一步改善车站内环境并降低车站运行能耗成为实现轨道交通高质量发展的关键途径;其中,通风系统在地铁环控系统总能耗中占比17%;为了在兼顾站内空气品质与舒适性的同时,减小系统末端风机能耗,模拟分... 中国城市轨道交通正处于快速建设中,进一步改善车站内环境并降低车站运行能耗成为实现轨道交通高质量发展的关键途径;其中,通风系统在地铁环控系统总能耗中占比17%;为了在兼顾站内空气品质与舒适性的同时,减小系统末端风机能耗,模拟分析了西安某地铁站的空调负荷,建立了负荷预测模型并计算目标送风量,采用改进多目标和声搜索算法优化逐时送风量;通过与传统运行策略对比分析发现,优化后站内温度有明显提升,并且与室外保持约4℃的温差,满足车站内乘客暂时的舒适需求,在维持站内CO_(2)浓度低于健康浓度限值的前提下,通风系统节能率达22.7%。 展开更多
关键词 变风量 通风系统能耗 舒适性 空气品质 和声搜索算法
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