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Stability of GM(1,1) power model on vector transformation 认领 引用 被引量：5
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作者 Jinhai Guo Xinping Xiao +1 位作者 Jun Liu Shuhua Mao 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2015年第1期103-109,共7页
The morbidity problem of the GM（1,1） power model in parameter identification is discussed by using multiple and rotation transformation of vectors. Firstly we consider the morbidity problem of the special matrix and... The morbidity problem of the GM（1,1） power model in parameter identification is discussed by using multiple and rotation transformation of vectors. Firstly we consider the morbidity problem of the special matrix and prove that the condition number of the coefficient matrix is determined by the ratio of lengths and the included angle of the column vector, which could be adjusted by multiple and rotation transformation to turn the matrix to a well-conditioned one. Then partition the corresponding matrix of the GM（1,1） power model in accordance with the column vector and regulate the matrix to a well-conditioned one by multiple and rotation transformation of vectors, which completely solve the instability problem of the GM（1,1） power model. Numerical results show that vector transformation is a new method in studying the stability problem of the GM（1,1） power model. 展开更多
关键词 grey power model stability morbidity vector transformation condition number of matrix
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A Thermal-Conscious Integrated Circuit Power Model and Its Impact on Dynamic Voltage Scaling Techniques 认领 引用 被引量：2
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作者 刘勇攀 杨华中 汪蕙 《Journal of Semiconductors》 CAS 北大核心 2007年第4期530-536,共7页
We propose a novel thermal-conscious power model for integrated circuits that can accurately predict power and temperature under voltage scaling. Experimental results show that the leakage power consumption is underes... We propose a novel thermal-conscious power model for integrated circuits that can accurately predict power and temperature under voltage scaling. Experimental results show that the leakage power consumption is underestimated by 52 % if thermal effects are omitted. Furthermore, an inconsistency arises when energy and temperature are simultaneously optimized by dynamic voltage scaling. Temperature is a limiting factor for future integrated circuits,and the thermal optimization approach can attain a temperature reduction of up to 12℃ with less than 1.8% energy penalty compared with the energy optimization one. 展开更多
关键词 CMOS integrated circuits power model temperature DVS
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A Combined-Power Model for the Distribution of Axial Force in Shaft Anchor along Its Length 认领 引用 被引量：2
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作者 卫军 周锡武 +1 位作者 朱玉 罗昕 《Journal of China University of Geosciences》 2006年第1期89-94,共6页
The theoretical results of axial force distribution models differ greatly from tests because of the complication of the rock type material. A three-parameter combined-power model is proposed by curves fitting the test... The theoretical results of axial force distribution models differ greatly from tests because of the complication of the rock type material. A three-parameter combined-power model is proposed by curves fitting the test data recorded from the pull tests on anchoring bars used in different engineering projects. Based on the comparison of the mechanical characteristics of shaft anchors and prestressed tendons, a two-parameter combined-power function model for prestressed tendons is proposed. The bounded length derived from the model and the suggested values of the parameters are also proposed. Compared with the Gaussian model, the three-parameter combined-power model is more precise and simple in expression. Results also suggest that the bounded length calculated from the average stress method is not safe enough. 展开更多
关键词 axial force prestress tendon bounded length combined-power model Gaussian model
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Multilevel Power Modeling of Base Station and Its ICs 认领 引用 被引量：2
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作者 WANG Wei LI Xiaoyang +2 位作者 LIU Dake CAI Zhaoyun GONG Chen 《China Communications》 SCIE CSCD 2015年第5期22-33,共12页
A new power estimation method is proposed for base station(BS) in this paper.Based on this method,a software platform for power estimation is developed.The proposed method models power consumption on different abstrac... A new power estimation method is proposed for base station(BS) in this paper.Based on this method,a software platform for power estimation is developed.The proposed method models power consumption on different abstraction levels by splitting a typical base station into several basic components at different levels in the view of embedded system design.In particular,our focus is on baseband IC(Integrate Circuit) due to it's the dominant power consumer in small cells.Baseband power model is based on arithmetic computing costs of selected algorithms.All computing and storage costs are calibrated using algorithm complexity,hardware architecture,activity ratio,silicon technology,and overheads on all hierarchies.Micro architecture and IC technology are considered.The model enables power comparison of different types of base stations configured with different baseband algorithms,micro architectures,and ICs.The model also supports cellular operators in power estimation of different deployment strategies and transmission schemes.The model is verified by comparing power consumption with a real LTE base station.By exposing more configuration freedoms,the platform can be used for power estimation of current and future base stations. 展开更多
关键词 baseband IC power consumption power modeling base station 5G
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A Slice Analysis-Based Bayesian Inference Dynamic Power Model for CMOS Combinational Circuits 认领 引用
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作者 陈杰 佟冬 +2 位作者 李险峰 谢劲松 程旭 《Journal of Semiconductors》 CAS 北大核心 2008年第3期502-509,共8页
To improve the accuracy and speed in cycle-accurate power estimation, this paper uses multiple dimensional coefficients to build a Bayesian inference dynamic power model. By analyzing the power distribution and intern... To improve the accuracy and speed in cycle-accurate power estimation, this paper uses multiple dimensional coefficients to build a Bayesian inference dynamic power model. By analyzing the power distribution and internal node state, we find the deficiency of only using port information. Then, we define the gate level number computing method and the concept of slice, and propose using slice analysis to distill switching density as coefficients in a special circuit stage and participate in Bayesian inference with port information. Experiments show that this method can reduce the power-per-cycle estimation error by 21.9% and the root mean square error by 25.0% compared with the original model, and maintain a 700 ＋ speedup compared with the existing gate-level power analysis technique. 展开更多
关键词 slice analysis Bayesian inference power model CMOS combinational circuit
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Energy Distribution for a Power Model of the Plane Symmetric Spacetime in f (R) Gravity 认领 引用
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作者 Morteza Yavari 《Communications in Theoretical Physics》 SCIE CAS CSCD 2013年第9期323-327,共5页
The study of the energy localization in f(R)theories of gravity has attracted much interest in recent years.In this paper,the vacuum solutions of the modified field equations for a power model of plane symmetric metri... The study of the energy localization in f(R)theories of gravity has attracted much interest in recent years.In this paper,the vacuum solutions of the modified field equations for a power model of plane symmetric metric are studied in metric f(R)gravity with the assumption of constant Ricci scalar.Next,we determine the energy-momentum complexes in f(R)theories of gravity for this spacetime for some important models.We also show that these models satisfy the stability and constant curvature conditions. 展开更多
关键词 plane symmetric spacetime power model generalized Landu-Lifshitz energy-momentum f（R）gravity
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MM-Power:面向电力巡检场景的视觉大模型多模态评测基准 认领 引用
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作者 闫云凤 邓以恒 +7 位作者 蔡芳仪 陈毅 龚世超 熊周智 曾子墨 蔡舒瑶 林嘉扬 齐冬莲 《高电压技术》 EI CAS CSCD 北大核心 2026年第7期2998-3009,共12页
随着视觉大模型在通用多模态任务上的快速发展,其在电力巡检等专业场景中的应用潜力日益受到关注。然而,现有研究对于此类模型在工业细粒度感知、视觉推理和抗幻觉方面的真实能力边界仍缺乏系统认识。针对通用多模态基准难以覆盖电力巡... 随着视觉大模型在通用多模态任务上的快速发展,其在电力巡检等专业场景中的应用潜力日益受到关注。然而,现有研究对于此类模型在工业细粒度感知、视觉推理和抗幻觉方面的真实能力边界仍缺乏系统认识。针对通用多模态基准难以覆盖电力巡检中专业目标繁多、小目标缺陷突出、成像视角复杂以及误报代价较高等问题,该文提出面向电力巡检任务的多模态评测基准MM-Power。该基准从细粒度感知、视觉语义一致性与幻觉评估、视觉逻辑推理3个层面构建12项任务,共包含2 708道选择题,覆盖可见光与红外两种模态、输电/变电/配电3类业务场景、云台/无人机/机器人/手持摄像机/手持红外测温仪5类采集视角,以及130类设备状态、缺陷与异常。进一步地,该文选取16个具有代表性的开源与闭源视觉大模型,在中英文提示词条件下开展统一评测。结果表明:英文提示词下最佳模型总体准确率仅为77.34%,中文提示词下最佳模型总体准确率为75.54%;模型在存在性判断、负样本鉴别和空间关系推理等任务上普遍表现较弱,提示词语言还会对部分模型的工业场景表现产生明显影响。研究结果表明,当前通用视觉大模型距离可靠的电力巡检应用仍有较大差距,MM-Power可为电力领域多模态模型的评测、优化与部署提供统一基准。 展开更多
关键词 视觉大模型 电力巡检 多模态评测 幻觉评估 视觉推理 工业智能
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基于Modelica的300 MW亚临界燃煤机组0号高加动静态特性及能效分析 认领 引用
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作者 颜婉玲 陈刚 +1 位作者 郭萌萌 孙立 《中国电机工程学报》 EI CSCD 北大核心 2026年第8期3322-3333,I0021,共12页
为提高燃煤机组深度调峰能力并改善低负荷运行热经济性,该文基于Modelica语言在Dymola平台建立300 MW亚临界锅炉-汽轮机组烟气与汽水系统动态耦合模型,旨在定量评估增设0号高压加热器(高加)对机组快速调频响应、热效率及低负荷脱硝运行... 为提高燃煤机组深度调峰能力并改善低负荷运行热经济性,该文基于Modelica语言在Dymola平台建立300 MW亚临界锅炉-汽轮机组烟气与汽水系统动态耦合模型,旨在定量评估增设0号高压加热器(高加)对机组快速调频响应、热效率及低负荷脱硝运行的影响。结果表明:在75%和50%汽轮机热耗率验收工况(urbine heat acceptance,THA)下,快速切除0号高加分别提升机组功率9.8和5.3 MW;稳定投运时,主给水温度分别提高33.46和26.75℃,汽轮机热耗率分别降低99和80 k J/(kW·h)。与此同时,各负荷工况下投运0号高加均可显著提升省煤器出口烟气温度,有利于维持选择性催化还原(selective catalytic reduction,SCR)反应器的适宜运行温度。在75%THA工况下进一步分析发现,投运0号高加使系统的总[火用]损由37.07 MW降至35.79 MW,且汽轮机的[火用]效率及各级回热加热器的[火用]效率均有效提升。可知,增设0号高加为机组提供了调频强化与能效改善的运行调节空间,为燃煤机组深度调峰运行优化提供了参考。 展开更多
关键词 燃煤机组 建模与仿真 深度调峰 0号高压加热器 热经济性 [火用]效率
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基于动态Power迭代的大语言模型微调算法 认领 引用 被引量：1
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作者 匡豪 刘波 +2 位作者 李辉越 曾闰 段围 《计算机科学与探索》 CSCD 北大核心 2026年第3期785-800,共16页
随着大语言模型在各领域的广泛应用,微调成为其适配特定任务的重要方法。当前主流的大模型微调方法主要分为部分微调和全量微调两种。部分微调虽能降低计算开销,但该方法仅更新大模型的少量参数,导致在复杂任务场景下,微调出的模型性能... 随着大语言模型在各领域的广泛应用,微调成为其适配特定任务的重要方法。当前主流的大模型微调方法主要分为部分微调和全量微调两种。部分微调虽能降低计算开销,但该方法仅更新大模型的少量参数,导致在复杂任务场景下,微调出的模型性能受限;虽然全量微调可以解决这一问题,但全量微调需要全面更新模型参数,从而导致微调时会存在计算资源需求高、微调时间长等问题。为解决全量微调存在的问题,提出一种基于动态Power迭代的梯度低秩投影算法(DPI-GLRP)。该方法基于秩一矩阵近似的思想,将大模型的权重矩阵在反向传播阶段产生的梯度矩阵分解为多个秩一矩阵,并通过Power迭代算法求解前r个特征向量以构成投影矩阵。该方法不仅解决了传统Power迭代只能获取单一最大特征向量的问题,还解决了以往研究中使用奇异值分解构建投影矩阵时间复杂度高、微调时间长的问题。对传统Power迭代算法进行研究发现,在特征值分布接近时,会出现收敛速度慢的问题。针对这一问题,提出一种动态Power迭代算法,该算法通过自适应调整迭代参数加快特征向量的计算效率,并从理论上证明提出的动态Power迭代算法的收敛效率比传统Power迭代要高。在LLaMA、Qwen等大模型上的实验表明,相较于LoRA等主流算法,DPI-GLRP算法能在保持或提升模型能力的同时,显著缩短微调时间,平均微调时间最多减少了80%。 展开更多
关键词 大语言模型 微调 梯度低秩投影 Power迭代
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A power function model for simulating creep mechanical properties of salt rock 认领 引用 被引量：2
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作者 LI Huan Ngaha Tiedeu WILLIAM +2 位作者 Jaak DAEMEN ZHOU Jun MA Chang-kun 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第2期578-591,共14页
In this paper,a new micro-creep model of salt rock is proposed based on a linear parallel bonded model(LPBM)using the two-dimensional particle flow code(PFC2D).The power function weakening form is assumed to describe ... In this paper,a new micro-creep model of salt rock is proposed based on a linear parallel bonded model(LPBM)using the two-dimensional particle flow code(PFC2D).The power function weakening form is assumed to describe the variation of the parallel bonded diameter(PBD)over time.By comparing with the parallel-bonded stress corrosion(PSC)model,a smaller stress fluctuation and smoother creep strain−time curves can be obtained by this power function model at the same stress level.The validity and adaptability of the model to simulate creep deformation of salt rock are verified through comparing the laboratory creep test curves and the Burgers model fitting result.The numerical results reveal that this model can be capable of capturing the creep deformation and damage behavior from the laboratory observations. 展开更多
关键词 salt rock creep damage particle flow code power function model
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Influence of lateral initial pressure on axisymmetric wave propagation in hollow cylinder based on first power hypo-elastic model 认领 引用 被引量：1
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作者 胡文韬 夏唐代 陈炜昀 《Journal of Central South University》 SCIE EI CAS 2014年第2期753-760,共8页
Influence of identical applied initial pressures on the radial surfaces of a hollow cylinder which is compose of materials with first power hypo-elastic constitutive model was investigated.The basic equations of the p... Influence of identical applied initial pressures on the radial surfaces of a hollow cylinder which is compose of materials with first power hypo-elastic constitutive model was investigated.The basic equations of the problem were built up based on the framework of piecewise homogeneous body model with the use of three-dimensional linearized theory of elastic waves in initially stressed bodies(TLTEWISB).With the method proposed previously,this problem was then solved numerically.Moreover,the dispersion group velocity of the lowest order mode with different initial pressures was also studied.It can be concluded that the initial pressure and the geometry parameters will induce considerable changes of different degrees in dispersive relation between phase velocity and wave number in opposite trend(positive in initial pressure and negative in thickness). 展开更多
关键词 initial pressure TLTEWISB first power hypo-elastic model dispersive relation
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APPROXIMATE POWER OF HETEROSCEDASTICITY TEST IN NONLINEAR MODELS WITH ARIMA(0,1,0) ERRORS 认领 引用 被引量：1
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作者 Lin Jinguan Wei Bocheng Zhang Nansong 《Applied Mathematics(A Journal of Chinese Universities)》 2005年第4期423-430,共8页
This paper presents an approach for estimating power of the score test, based on an asymptotic approximation to the power of the score test under contiguous alternatives. The method is applied to the problem of power ... This paper presents an approach for estimating power of the score test, based on an asymptotic approximation to the power of the score test under contiguous alternatives. The method is applied to the problem of power calculations for the score test of heteroscedasticity in European rabbit data （Ratkowsky, 1983）. Simulation studies are presented which indicate that the asymptotic approximation to the finite-sample situation is good over a wide range of parameter configurations. 展开更多
关键词 ARIMA （0 1 0） errors asymptotic approximation heteroscedasticity local power,nonlinear model ,score test.
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AUTOREGRESSIVE MODEL AND POWER SPECTRUM CHARATERISTICS OF CURRENT SIGNAL IN HIGH FREQUENCY GROUP PULSE MICRO-ELECTROCHEMICAL MACHINING 认领 引用 被引量：3
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作者 TANG Xinglun ZHANG Zhijing +1 位作者 ZHOU Zhaoying YANG Xiaodong 《Chinese Journal of Mechanical Engineering》 EI CAS 2006年第2期260-264,共5页
The identification of the inter-electrode gap size in the high frequency group pulse micro-electrochemical machining （HGPECM） is mainly discussed. The auto-regressive（AR） model of group pulse current flowing acros... The identification of the inter-electrode gap size in the high frequency group pulse micro-electrochemical machining （HGPECM） is mainly discussed. The auto-regressive（AR） model of group pulse current flowing across the cathode and the anode are created under different situations with different processing parameters and inter-electrode gap size. The AR model based on the current signals indicates that the order of the AR model is obviously different relating to the different processing conditions and the inter-electrode gap size; Moreover, it is different about the stability of the dynamic system, i.e. the white noise response of the Green＇s function of the dynamic system is diverse. In addition, power spectrum method is used in the analysis of the dynamic time series about the current signals with different inter-electrode gap size, the results show that there exists a strongest power spectrum peak, characteristic power spectrum（CPS）, to the current signals related to the different inter-electrode gap size in the range of 0～5 kHz. Therefore, the CPS of current signals can implement the identification of the inter-electrode gap. 展开更多
关键词 Electrochemical machining Inter-electrode gap Autoregressive（AR） model Power spectrum
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Modelling and simulation of flight control electromechanical actuators with special focus on model architecting, multidisciplinary effects and power flows 认领 引用 被引量：22
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作者 Fu Jian Jean-Charles Maré Fu Yongling 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2017年第1期47-65,共19页
In the aerospace field, electromechanical actuators are increasingly being implemented in place of conventional hydraulic actuators. For safety-critical embedded actuation applications like flight controls, the use of... In the aerospace field, electromechanical actuators are increasingly being implemented in place of conventional hydraulic actuators. For safety-critical embedded actuation applications like flight controls, the use of electromechanical actuators introduces specific issues related to thermal balance, reflected inertia, parasitic motion due to compliance and response to failure. Unfortunately, the physical effects governing the actuator behaviour are multidisciplinary, coupled and nonlinear. Although numerous multi-domain and system-level simulation packages are now available on the market, these effects are rarely addressed as a whole because of a lack of scientific approaches for model architecting, multi-purpose incremental modelling and judicious model implementation. In this publication, virtual prototyping of electromechanical actuators is addressed using the Bond-Graph formalism. New approaches are proposed to enable incremental modelling,thermal balance analysis, response to free-run or jamming faults, impact of compliance on parasitic motion, and influence of temperature. A special focus is placed on friction and compliance of the mechanical transmission with fault injection and temperature dependence. Aileron actuation is used to highlight the proposals for control design, energy consumption and thermal analysis, power network pollution analysis and fault response. 展开更多
关键词 Bond Graph Electro-hydrostatic actuator Electromechanical actuator More electric aircraft Modelling Power-by-wire Power loss Simulation
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Development and Application of a Power Law Constitutive Model for Eddy Current Dampers 认领 引用
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作者 Longteng Liang Zhouquan Feng +2 位作者 Hongyi Zhang Zhengqing Chen Changzhao Qian 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第3期2403-2419,共17页
Eddy current dampers (ECDs) have emerged as highly desirable solutions for vibration control due to theirexceptional damping performance and durability. However, the existing constitutive models present challenges tot... Eddy current dampers (ECDs) have emerged as highly desirable solutions for vibration control due to theirexceptional damping performance and durability. However, the existing constitutive models present challenges tothe widespread implementation of ECD technology, and there is limited availability of finite element analysis (FEA)software capable of accurately modeling the behavior of ECDs. This study addresses these issues by developing anewconstitutivemodel that is both easily understandable and user-friendly for FEAsoftware. By utilizing numericalresults obtained from electromagnetic FEA, a novel power law constitutive model is proposed to capture thenonlinear behavior of ECDs. The effectiveness of the power law constitutive model is validated throughmechanicalproperty tests and numerical seismic analysis. Furthermore, a detailed description of the application process ofthe power law constitutive model in ANSYS FEA software is provided. To facilitate the preliminary design ofECDs, an analytical derivation of energy dissipation and parameter optimization for ECDs under harmonicmotionis performed. The results demonstrate that the power law constitutive model serves as a viable alternative forconducting dynamic analysis using FEA and optimizing parameters for ECDs. 展开更多
关键词 Eddy current damper constitutive model finite element analysis vibration control power law constitutive model
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A Theoretical Model for the Asymmetric Transmission of Powerful Acoustic Wave in Double-Layer Liquids 认领 引用 被引量：3
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作者 王寻 陈伟中 +1 位作者 王奇 梁金福 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第8期88-91,共4页
A theoretical model which couples the oscillation of cavitation bubbles with the equation of an acoustic wave is utilized to describe the sound fields in double-layer liquids, which can be used to realize the asymmetr... A theoretical model which couples the oscillation of cavitation bubbles with the equation of an acoustic wave is utilized to describe the sound fields in double-layer liquids, which can be used to realize the asymmetric transmission of acoustic waves. Numerical simulations show that the asymmetry is related to the properties of the host liquids and the input acoustic wave. Asymmetry can be enhanced if the maximum number density or the ambient radius of the cavitation bubbles in the low cavitation threshold liquid increases. Moreover, the direction of rectification will be reversed if the amplitude of the input acoustic wave becomes high enough. 展开更多
关键词 A Theoretical Model for the Asymmetric Transmission of Powerful Acoustic Wave in Double-Layer Liquids
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A new modeling scheme for powered parafoil unmanned aerial vehicle platforms: Theory and experiments 认领 引用 被引量：6
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作者 Bingbing LI Yuqing HE +1 位作者 Jianda HAN Jizhong XIAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2019年第11期2466-2479,共14页
A novel framework is established for accurate modeling of Powered Parafoil Unmanned Aerial Vehicle(PPUAV). The model is developed in the following three steps: obtaining a linear dynamic model, simplifying the model s... A novel framework is established for accurate modeling of Powered Parafoil Unmanned Aerial Vehicle(PPUAV). The model is developed in the following three steps: obtaining a linear dynamic model, simplifying the model structure, and estimating the model mismatch due to model variance and external disturbance factors. First, a six degree-of-freedom linear model, or the structured model, is obtained through dynamic establishment and linearization. Second, the data correlation analysis is adopted to determine the criterion for proper model complexity and to simplify the structured model. Next, an active model is established, combining the simplified model with the model mismatch estimator. An adapted Kalman filter is utilized for the real-time estimation of states and model mismatch. We finally derive a linear system model while taking into account of model variance and external disturbance. Actual flight tests verify the effectiveness of our active model in different flight scenarios. 展开更多
关键词 Active model Data correlation analysis Model complexity Powered parafoil State estimation Unmanned aerial vehicle(UAV)
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Hybrid Power Bank Deployment Model for Energy Supply Coverage Optimization in Industrial Wireless Sensor Network 认领 引用
18
作者 Hang Yang Xunbo Li Witold Pedrycz 《Intelligent Automation & Soft Computing》 SCIE 2023年第8期1531-1551,共21页
Energy supply is one of the most critical challenges of wireless sensor networks(WSNs)and industrial wireless sensor networks(IWSNs).While research on coverage optimization problem(COP)centers on the network’s monito... Energy supply is one of the most critical challenges of wireless sensor networks(WSNs)and industrial wireless sensor networks(IWSNs).While research on coverage optimization problem(COP)centers on the network’s monitoring coverage,this research focuses on the power banks’energy supply coverage.The study of 2-D and 3-D spaces is typical in IWSN,with the realistic environment being more complex with obstacles(i.e.,machines).A 3-D surface is the field of interest(FOI)in this work with the established hybrid power bank deployment model for the energy supply COP optimization of IWSN.The hybrid power bank deployment model is highly adaptive and flexible for new or existing plants already using the IWSN system.The model improves the power supply to a more considerable extent with the least number of power bank deployments.The main innovation in this work is the utilization of a more practical surface model with obstacles and training while improving the convergence speed and quality of the heuristic algorithm.An overall probabilistic coverage rate analysis of every point on the FOI is provided,not limiting the scope to target points or areas.Bresenham’s algorithm is extended from 2-D to 3-D surface to enhance the probabilistic covering model for coverage measurement.A dynamic search strategy(DSS)is proposed to modify the artificial bee colony(ABC)and balance the exploration and exploitation ability for better convergence toward eliminating NP-hard deployment problems.Further,the cellular automata(CA)is utilized to enhance the convergence speed.The case study based on two typical FOI in the IWSN shows that the CA scheme effectively speeds up the optimization process.Comparative experiments are conducted on four benchmark functions to validate the effectiveness of the proposed method.The experimental results show that the proposed algorithm outperforms the ABC and gbest-guided ABC(GABC)algorithms.The results show that the proposed energy coverage optimization method based on the hybrid power bank deployment model generates more accurate results than the results obtained by similar algorithms(i.e.,ABC,GABC).The proposed model is,therefore,effective and efficient for optimization in the IWSN. 展开更多
关键词 Industrial wireless sensor network hybrid power bank deployment model:energy supply coverage optimization artificial bee colony algorithm radio frequency numerical function optimization
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Power System Aggregate Load Area Modelling by Particle Swarm Optimization 认领 引用 被引量：1
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作者 Jian-Lin Wei, Ji-Hong Wang, Q. H. Wu, Nan Lu Department of Electrical Engineering and Electronics, University of Liverpool, Brownlow Hill, Liverpool L69 3GJ, UK 《International Journal of Automation and computing》 2005年第2期171-178,共8页
This paper presents a new approach for deriving a power system aggregate load area model (ALAM). In this approach, an equivalent area load model is derived to represent the load characters for a particular area load o... This paper presents a new approach for deriving a power system aggregate load area model (ALAM). In this approach, an equivalent area load model is derived to represent the load characters for a particular area load of a power system network. The Particle Swarm Optimization (PSO) method is employed to identify the unknown parameters of the generalised system, ALAM, based on the system measurement directly using a one-step scheme. Simulation studies are carried out for an IEEE 14-Bus power system and an IEEE 57-Bus power system. Simulation results show that the ALAM can represent the area load characters accurately under different operational conditions and at different power system states. 展开更多
关键词 Load modelling power system particle swarm optimization parameter identificaiotn
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Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model 认领 引用
20
作者 Zi-Qing Wang Jin-Fang Li +2 位作者 Ying-Ge Xie Guo-Dong Wang Yao-Gen Shu 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第12期559-562,共4页
We proposed a modified ratchet model including power-stroke and elastic coupling to study the efficiency of collective non-processive motors such as myosin Ⅱ in muscle. Our theoretical results are in good agreement w... We proposed a modified ratchet model including power-stroke and elastic coupling to study the efficiency of collective non-processive motors such as myosin Ⅱ in muscle. Our theoretical results are in good agreement with the experimental data. Our study not only reveals that the maximum efficiency depends on elasticity and is independent of transition rates but also indicates that the parameters fitted to fast muscle are different from those fitted to a slow one. The latter may imply that the structure of the fast muscle is different from that of the slow one. The main reason that our model succeeds is that velocity in this model is an independent variable. 展开更多
关键词 efficiency of collective non-processive motors ratchet model power-stroke elasticity
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