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  • IOP Publishing  (14)
  • Cong, Lin  (14)
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  • IOP Publishing  (14)
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  • 1
    Online Resource
    Online Resource
    Forward kinematics of body posture perception using an improved BP neural network based on a quantum genetic algorithm
    IOP Publishing ; 2022
    In:  Laser Physics Letters Vol. 19, No. 9 ( 2022-09-01), p. 095201-
    Details
    In: Laser Physics Letters, IOP Publishing, Vol. 19, No. 9 ( 2022-09-01), p. 095201-
    Abstract: Forward kinematics analysis of body posture perception is the basis for studying other performance of 6-degree of freedom parallel robot. Because forward kinematics involves many sets of nonlinear equations, it is usually difficult to solve. In this paper, an improved BP neural network (BPNN) based on a quantum genetic algorithm (GA) is designed to solve the forward kinematics problem. Additionally, we use the characteristics of easy calculation of inverse kinematics to generate a dataset for training and testing. Finally, through a large number of experiments, we show that the improved strategy of BPNN by quantum GA is effective, and the accuracy of the model we designed is high enough to solve the forward kinematics of body posture perception.
    Type of Medium: Online Resource
    ISSN: 1612-2011 , 1612-202X
    URL: Article
    DOI: 10.1088/1612-202X/ac7f37
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2131546-2
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  • 2
    Online Resource
    Online Resource
    Review of Research on System Thermal Inertia Modelling and Optimal Scheduling from the Perspective of Flexible Resources
    IOP Publishing ; 2022
    In:  Journal of Physics: Conference Series Vol. 2160, No. 1 ( 2022-01-01), p. 012051-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2160, No. 1 ( 2022-01-01), p. 012051-
    Abstract: The thermal inertia of the existing heating system is often considered an adverse factor, which will affect the operation of the system. However, under the perspective of resource flexibility, the thermal inertia of the system can effectively increase the flexibility of the system operation, significantly reduce the energy consumption and enhance the ability of energy supply and demand balance, and enhance the new energy integration, such as the wind power. Based on the flexible resources, it focuses on the study of the thermal inertia of the “network side” heating pipe network of the system and the optimal scheduling of the heating system. Combined with the thermal inertia of the pipe network, the operation characteristics of the power/heat output of the gas-steam combined cycle unit were analysed theoretically. On this basis, the optimal scheduling model of the system was established. Taking the energy supply system of an industrial park as an example, the model was verified to achieve a more stable power output effect of the unit.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2160/1/012051
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2166409-2
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  • 3
    Online Resource
    Online Resource
    A Flexible Ethernet Calendar Allocation Based on Client Traffic
    IOP Publishing ; 2022
    In:  Journal of Physics: Conference Series Vol. 2224, No. 1 ( 2022-04-01), p. 012131-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2224, No. 1 ( 2022-04-01), p. 012131-
    Abstract: Aiming at the problem of low link bandwidth utilization in the current FlexE client slot allocation mechanism, a FlexE calendar bandwidth allocation mechanism that is compatible with the client data transmission rate is proposed, and the LSTM algorithm is used to predict network traffic data, and according to the client priority and traffic prediction results, the client is allocated with slots. Experiments show that, compared with the traditional FlexE slot allocation mechanism, the method proposed in this paper can make the bandwidth resource utilization rate reach 82.8%.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2224/1/012131
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2166409-2
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  • 4
    Online Resource
    Online Resource
    Optimal Design of Biomass-centered Integrated Energy System under Uncertainty
    IOP Publishing ; 2023
    In:  Journal of Physics: Conference Series Vol. 2503, No. 1 ( 2023-05-01), p. 012024-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2503, No. 1 ( 2023-05-01), p. 012024-
    Abstract: To achieve the goal of carbon peak and carbon neutrality, China is actively promoting the production and consumption of clean and sustainable energy such as biomass. The optimization of integrated energy system (IES) configuration including biomass has gradually become a research hotspot. In this paper, aiming at the configuration optimization problem of biomass-centered IES under uncertainty, considering the uncertainty of user load and energy price, the maximum annual profit is selected as the objective function, and the configuration planning model of IES under uncertainty is established. Then, the artificial bee colony (ABC) algorithm is used to solve the optimization model, and the influence of uncertainty factors on the configuration optimization of IES is explored. The results of the example show that with the two-stage stochastic programming model used to deal with the uncertainty factors in the IES, the equipment configuration capacity and operating parameters in the system are changed compared with the results of the deterministic conditions. It can overcome the problem of over-optimism in the deterministic condition and reduce the system operation risk due to the random variation of uncertainty factors.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2503/1/012024
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 2166409-2
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  • 5
    Online Resource
    Online Resource
    The Optimal Operation Model of Electric-Thermal-Gas Integrated Energy System Considering Multi-Energy Complementarity
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 781, No. 4 ( 2021-05-01), p. 042021-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 781, No. 4 ( 2021-05-01), p. 042021-
    Abstract: As China’s environment and climate problems become more and more serious, the integrated energy system is booming. However, the coupling between various systems is not strong, and it is urgent to increase the coupling between multiple systems. Taking the total cost of the integrated energy system as the objective function, the independent operation and coupling transformation of the power system, natural gas system and thermal system within the system are considered. In this paper, a system planning model is built to meet the three types of loads in the system: electric load, thermal load and gas load, so as to increase the coupling of the system, ensure the reliable operation of the integrated energy system and improve the energy utilization efficiency.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/781/4/042021
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
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    Online Resource
  • 6
    Online Resource
    Online Resource
    System and method of drip test device for testing waterproof performance of large equipment
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 631, No. 1 ( 2021-01-01), p. 012025-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 631, No. 1 ( 2021-01-01), p. 012025-
    Abstract: At present, the drip test device used in drip test is limited by the difficulty and cost of structural layout, so it is difficult to actively rotate the electrical equipment with large volume and weight, and can not meet the test requirements of various products. In view of the defects of the existing technology, this paper provides a water-proof performance drip test device, system and method. Through the active rotation of the drip pan, the rotation relative to the large-scale test equipment is generated, so as to meet the needs of the equipment waterproof performance test; and the corresponding equipment support is configured to make the equipment form the required angle state during the dripping test, which is convenient for large size Water proof test operation of electrical equipment. At the same time, it makes the test process easy for the staff to operate, has strong economic value and social significance, and can be widely used in testing units.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/631/1/012025
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
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  • 7
    Online Resource
    Online Resource
    Research on Dynamic Response Time Test Method for Reactive Power Compensation Device
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 632, No. 4 ( 2021-01-01), p. 042065-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 632, No. 4 ( 2021-01-01), p. 042065-
    Abstract: With a large number of applications of fast impact load equipment, the power quality of power grid is increasingly affected. During the actual inspection process of enterprise production and inspection organization, we find that there are still shortcomings in GB/T15576-2008 standard, so we need to study and perfect the dynamic response time test method of reactive power compensation device. In this paper, the input mode of switching switch, the processing speed of controller and the effect of operation method on the dynamic response time are analyzed, and a new dynamic response time test method is proposed. The application of electronic load in the dynamic response time test can greatly improve the accuracy of the test.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/632/4/042065
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
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  • 8
    Online Resource
    Online Resource
    Quantitative identification of interlayer in delta phase oilfield
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 781, No. 2 ( 2021-05-01), p. 022038-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 781, No. 2 ( 2021-05-01), p. 022038-
    Abstract: It is very difficult to accurately tap the potential of remaining oil in delta phase oilfield, and the analysis of geological origin of remaining oil is particularly critical. This paper analyzes and studies the types and genesis of interbeds and quantitative identification of interbeds in delta phase oilfield. The data analysis shows that: on the basis of the existing data, the core qualitative interlayer identification is carried out first, and the types and causes of the interlayer are studied. Then, the identification standard of interlayer is established to identify logging interlayer. If the coincidence rate is low, it is necessary to modify the identification standard, reestablish the identification standard of rock electrical corresponding interlayer, and carry out logging interlayer identification again. Finally, we must carry out manual inspection, interpretation inspection and rationality analysis.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/781/2/022038
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
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  • 9
    Online Resource
    Online Resource
    A study on resource reallocation in regional energy networks based on the adjustment of supply and demand nodes
    IOP Publishing ; 2022
    In:  IOP Conference Series: Earth and Environmental Science Vol. 983, No. 1 ( 2022-02-01), p. 012057-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 983, No. 1 ( 2022-02-01), p. 012057-
    Abstract: In this paper, we propose and analyse a regional energy network resource allocation scheme and optimization model for regions where the number of energy supply nodes grows seasonally, including the optimal division of the energy supply range of each energy supply node based on distance, the optimal path planning scheme of the energy pipeline network connecting energy supply and consumption nodes, and the optimal allocation/reallocation model of regional energy network resources with the objective of optimal operational economy. The proposed scheme for the optimal redistribution of regional energy network resources is used to analyse and study the case area, and a scheme for the division of energy supply nodes in the case area, a scheme for the construction path of energy pipeline network and a planning strategy for the optimal redistribution of energy network resources are developed to verify the feasibility of the method in this paper.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/983/1/012057
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2434538-6
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  • 10
    Online Resource
    Online Resource
    Optimal utilization of load side power and heat resources based on aggregator mode
    IOP Publishing ; 2021
    In:  Journal of Physics: Conference Series Vol. 1754, No. 1 ( 2021-02-01), p. 012028-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 1754, No. 1 ( 2021-02-01), p. 012028-
    Abstract: Combined cooling, heating and power system (CCHP) can realize the cascade utilization of energy and improve the energy utilization efficiency. Focusing on the phenomenon that the traditional self-sufficiency mode is easy to cause insufficient or excess regional energy supply, considreing the complementarity between different regional load characteristics, an internal multi-region interconnected complementary energy supply method based on aggregator mode was proposed. In order to solve the problem of uncertainty in the optimal dispatching of multiple resources in the region under the aggregator mode, an optimal dispatching model based on interval linear programming was constructed, which took the minimum operation cost of aggregator as the objective function. The feasibility and effectiveness of the method are verified by analyzing the aggregator mode in residential area, commercial area, office area and industrial area. The results show that the operation cost can be reduced and the economic benefit can be improved under the aggregator mode.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/1754/1/012028
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2166409-2
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