In this paper, an optimisation method of residential building energy conservation in hot summer and cold winter areas based on particle swarm optimisation algorithm is studied. First, considering the influence of exte...
详细信息
In this paper, an optimisation method of residential building energy conservation in hot summer and cold winter areas based on particle swarm optimisation algorithm is studied. First, considering the influence of external and internal factors of the residential environment and the change of energy consumption, the energy-conservation parameters of residential buildings are selected. Then, the particle swarm optimisation algorithm is introduced to build the optimisation model of building energy conservation, and the optimisation results are corrected by inertia weight to complete the design. The test results show that the energy consumption of this method is 2796 KWh, the correlation coefficient is higher than 0.95, and the optimisation time is 1.27 s. This method can effectively reduce the energy consumption of residential buildings, and the optimisation speed is faster.
A standalone wind/solar/battery hybrid power system, making full use of the nature complementarity between wind and solar energy, has an extensive application prospect among various newly developed energy technologies...
详细信息
A standalone wind/solar/battery hybrid power system, making full use of the nature complementarity between wind and solar energy, has an extensive application prospect among various newly developed energy technologies. The capacity of the hybrid power system needs to be optimised in order to make a tradeoff between power reliability and cost. In this study, each part of the wind/solar/battery hybrid power system is analysed in detail and an objective function combining total owning cost and loss of power supply probability is built. To solve the problems with non-linearity, complexity and huge computation, an improved particleswarmoptimisation (PSO) algorithm is developed, which integrates the taboo list to broaden the search range and introduces 'restart' and 'disturbance' operation to enhance the global searching capability. The simulation results indicate that the proposed algorithm is more stable and provides better results in solving the optimal allocation of the capacity of the standalone wind/solar/battery hybrid power system compared with the standard PSO algorithm.
This paper proposes a discrete particleswarmoptimisation (DPSO) algorithm for solving the heterogeneous unmanned aerial vehicle (UAV) task allocation problem. Such an algorithm takes task priority, resource constrai...
详细信息
This paper proposes a discrete particleswarmoptimisation (DPSO) algorithm for solving the heterogeneous unmanned aerial vehicle (UAV) task allocation problem. Such an algorithm takes task priority, resource constraints flight distance, and task revenue into account. First, the specific particle is designed according to the characteristics of the problem, and the corresponding relationship between the allocation plans and the particles is given. A modified strategy is presented for the infeasible particles. On this basis, the original particleswarmalgorithm was transformed to a DPSO algorithm. Then, in order to improve the local search ability of particles, an elite operator is introduced on the basis of DPSO, and local search is initiated with a certain probability, forming a new search strategy (IDPSO). Simulation results show that DPSO can be reasonable in solving heterogeneous UAV multi-task problems when the problem size is small. The optimal solution obtained by the proposed IDPSO algorithm is better than the DPSO algorithm, and as the scale of the task allocation problem increases, the superiority of the IDPSO algorithm becomes more significant.
To improve the sole perception method of population diversity and premature stagnation, a self-organisation particle swarm optimisation algorithm based on L norm multi-measurements diversity feedback (SOPSO-L) is prop...
详细信息
To improve the sole perception method of population diversity and premature stagnation, a self-organisation particle swarm optimisation algorithm based on L norm multi-measurements diversity feedback (SOPSO-L) is proposed, which introduces negative feedback mechanism to imitate the information interaction between the individuals. Position diversity, velocity diversity and self-cognitive diversity based on L norm are defined as perception information of the swarm. The proposed algorithm adopts multi-measurements swarm diversity as dynamic perception information to tune key parameters such as inertia weight and acceleration coefficients to make the algorithm in convergence or divergence stage. The corresponding characteristics of population diversities were studied. SOPSO-L is tested on six typical test functions and is compared to other variants of PSO presented in the literature. The results show that the proposed method not only greatly improves the global searching capability and computational efficiency, but also effectively avoids the local stagnation problem.
作者:
Yang, QiaoheShanghai Univ
Sch Commun & Informat Engn Key Lab Special Fiber Opt & Opt Access Networks Shanghai Peoples R China
Wireless sensor network (WSN) node localisation technology based on received signal strength indication (RSSI) is widely used as it does not need additional hardware devices. The ranging accuracy of RSSI is poor, and ...
详细信息
Wireless sensor network (WSN) node localisation technology based on received signal strength indication (RSSI) is widely used as it does not need additional hardware devices. The ranging accuracy of RSSI is poor, and the particleswarmoptimisation (PSO) algorithm can effectively improve the positioning accuracy of RSSI. However, the particleswarm diversity of the PSO algorithm is easy to lose quickly and fall into local optimal solution in the iterative process. Based on the convergence conditions and initial search space characteristics of the PSO algorithm in WSN localisation, an improved PSO algorithm (improved self-adaptive inertia weight particleswarmoptimisation [ISAPSO]) is proposed. Compared with the other two PSO location estimation algorithms, the ISAPSO location estimation algorithm has good performance in positioning accuracy, power consumption and real-time performance under different beacon node proportions, node densities and ranging errors.
Aiming at the problems of high energy consumption and low day-lighting coefficient in traditional building energy-saving control methods, an energy-saving optimisation control method for large-scale buildings based on...
详细信息
Aiming at the problems of high energy consumption and low day-lighting coefficient in traditional building energy-saving control methods, an energy-saving optimisation control method for large-scale buildings based on particleswarmoptimisation is proposed. Using Autodesk Revit in BIM modelling software the software constructs the large-scale building model, extracts the characteristics of large-scale building organisation information by SIFT method;uses multiple linear regression analysis method to obtain the large-scale building model wall, external window heat transfer coefficient and other parameters, completes the large-scale building operation state analysis;uses particle swarm optimisation algorithm to optimise the large-scale building energy-saving parameters, and obtains its objective function to obtain the large-scale construction Building the optimal energy consumption parameters to achieve large-scale building automation energy-saving control. The experimental results show that: after the energy-saving control of large-scale buildings, the day-lighting coefficient is higher.
In copper smelting, the ore blending scheme is crucial for product quality and cost. Traditional methods, relying on manual experience, have limitations and can't reach the optimal. This study thus presents an int...
详细信息
In copper smelting, the ore blending scheme is crucial for product quality and cost. Traditional methods, relying on manual experience, have limitations and can't reach the optimal. This study thus presents an intelligent ore blending method. It starts by constructing a mathematical model. The objective function covers three aspects: minimising the cost of raw materials entering the furnace, minimising deviation of elemental content of raw materials entering the furnace from set values, and minimising deviation of the total weight of the ore blend from the set value. Constraint conditions consider production processes to ensure model feasibility. An improved PSO algorithm, with a linearly decreasing inertia weight and constriction factor method, is designed to solve the model. Tests using two sets of data from a large copper smelting enterprise show that for the same Cu and S contents, the cost of raw materials entering the furnace decreased by 40.044 yuan and 35.186 yuan per ton, respectively. Also, the intelligent method converges quickly, getting an optimised scheme in about 20s. This reduces ore blending workload, improves efficiency, cuts costs, and brings economic benefits to the enterprise. Dans le proc & eacute;d & eacute;de fusion du cuivre, le sch & eacute;ma de m & eacute;lange du minerai joue un r & ocirc;le d & eacute;cisif dans la qualit & eacute;et le co & ucirc;t du produit. Cependant, les m & eacute;thodes traditionnelles de m & eacute;lange du minerai se fondent principalement sur l'exp & eacute;rience manuelle et pr & eacute;sentent des limites importantes, ce qui rend difficile l'obtention d'un sch & eacute;ma de m & eacute;lange du minerai proche de l'optimal. Par cons & eacute;quent, cette & eacute;tude propose une m & eacute;thode intelligente de m & eacute;lange du minerai. En premier, cette m & eacute;thode construit un mod & egrave;le math & eacute;matique dont la fonction objective comprend trois aspects: premi & egrave;rement, le co & uci
Determining the permeability characteristics of mine tailing slurries through laboratory finite-strain consolidation tests is costly due to the extensive testing required. An alternative approach involves back-predict...
详细信息
Determining the permeability characteristics of mine tailing slurries through laboratory finite-strain consolidation tests is costly due to the extensive testing required. An alternative approach involves back-predicting hydraulic conductivities from settling column test data. This study employed settlement and excess pore pressure data as inputs in optimising the permeability parameters using the finite-strain consolidation (FSC) framework. The proposed approach used the finite difference method to solve the governing equation for FSC in the forward analysis. Two novel variants of the Artificial Bee Colony (ABC) algorithm, namely the Modified Artificial Bee Colony (MABC) and the Hybrid Artificial Bee Colony (HABC) algorithms, were used to back-predict the hydraulic conductivity function parameters from the FSC test data. These models predicted the permeability characteristics using the temporal variation of the settlements for six slurries and excess pore pressure dissipation data for four slurries. The performance of the proposed algorithms along with Hybrid particleswarmoptimisation (HPSO) was compared with the conventional optimisationalgorithms, viz., PSO, ABC, and Quantum PSO (QPSO). The HABC and HPSO exhibited remarkable stability, consistently converging to identical solution sets across multiple iterations, thereby outperforming other algorithms in this study. Despite its higher time complexity by HABC relative to the other evaluated methods, this complexity is warranted for enhanced robustness. The current study is helpful in brining practical and reliable methodologies for estimating the hydraulic conductivity function from field-scale conductivity (FSC) data, providing critical insights for the safe and efficient management of slurry wastes.
The corresponding objectives and principles of the intermediate roll contour design are proposed to improve the strip edge drop problem in the process of 18-High mill production and enhance the regulation ability on s...
详细信息
The corresponding objectives and principles of the intermediate roll contour design are proposed to improve the strip edge drop problem in the process of 18-High mill production and enhance the regulation ability on strip shape. The intermediate roll contour is designed using the particle swarm optimisation algorithm to satisfy the production requirements. The elastic-plastic coupling finite element model of roll system-rolling piece integration is established, the application effect of the new roll contour is verified, and the regulation ability on strip shape under the new roll contour is analysed. Results show that, compared with the original roll contour, the strip edge drop phenomenon is remarkably improved. The regulation ability on strip shape is evidently improved compared with that of the original roll contour. The regulation ability on strip shape of the intermediate roll shifting is stronger than that of the intermediate roll bending force under the new roll contour. Finally, combined with field data of rolling, the finite element model is verified on site. The simulation and measured values are high, and the error is within 10%. The research results can provide a good theoretical basis for the improvement of the intermediate roll contour and improvement of the regulation ability on strip shape of 18-High mill.
A novel algorithm is proposed for optimal extraction of GaN HEMT small-signal model parameters. The proposed Quantum Genetic algorithm (QGA) exploits the superposition, entanglement and interference of quantum states,...
详细信息
A novel algorithm is proposed for optimal extraction of GaN HEMT small-signal model parameters. The proposed Quantum Genetic algorithm (QGA) exploits the superposition, entanglement and interference of quantum states, which solves the problems of high number of iterations and slow convergence when obtaining optimal solutions using Genetic algorithms (GA). Meanwhile, it is solved that the particleswarmoptimisation (PSO) algorithm produces premature convergence and easily falls into the local optimum solution. In order to avoid the influence of distributed parasitic effects in large size devices under high-frequency conditions, a suitable frequency range is determined and combined with direct extraction techniques to determine the range of parameter values. The model parameter values are optimised step by step using QGA. In order to verify the superiority of QGA, QGA and PSO algorithms are both used to optimise GaN HEMT small-signal model parameters. By comparing the modelled S-parameter effects of the QGA and the PSO algorithm, it can be found that the QGA has better consistency with the measured data.
暂无评论