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nonlinear characterization of magnetorheological elastomer-based smart device for structural seismic mitigation

International Journal of Smart and Nano Materials 2021年第4期12卷 390-428页

作者： Yang Yu Azadeh Noori Hoshyar Huan Li Guang Zhang Weiqiang Wang Centre for Infrastructure Engineering Western Sydney UniversityPenrithNSWAustralia School of Engineering It and Physical ScienceFederation University AustraliaBrisbaneQLDAustralia School of Civil and Environmental Engineering University of Technology SydneyNSWAustralia College of Mechanical Engineering Zhejiang University of TechnologyHangzhouZhejiangChina eCollege of Water Conservancy and Hydropower Engineering Hohai UniversityNanjingJiangsuChina

Magnetorheological elastomer(MRE)has been demonstrated to be effective in structural vibration control because of controllable stiffness and damping properties with the effect of external magnetic *** achieve a high performance of MRE device-based vibration control,a robust and accurate model is necessary to describe nonlinear dynamics of MRE *** article aims at realising this target via nonlinear modeling of an innovative MRE device,*** vibration ***,the field-dependent properties of MRE isolator were analysed based on experimental data of the isolator in various dynamic ***,a phenomenal model was developed to account for these unique characteristics of MREbased ***,an improved PSO algorithm was designed to estimate model *** on identification results,a generalised model was proposed to clarify the field-dependent properties of the isolator due to varied currents,which was then validated by random and earthquake-excited test *** on the proposed model,a frequency control strategy was designed for semi-active control of MRE devices-incorporated smart structure for vibration ***,using a three-storey frame model and four benchmark earthquakes,a numerical study was conducted to validate the performance of control strategy based on the generalised current-dependent model with satisfactory results.

关键词： Magnetorheological elastomer device nonlinear characterization frequency control vibration suppression

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nonlinear characterization OF CONCURRENT DUAL-BAND RF POWER AMPLIFIERS

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Journal of Electronics(China) 2012年第3期29卷 215-221页

作者： Hui Ming Liu Taijun Ye Yan Zhang Haili Shen Dongya Li Liang Department of Information Science and Engineering Ningbo UniversityNingbo 315211China Zhejiang College of Textile&Fashion Ningbo 315211China Department of Information Science and Engineering Yunnan UniversityKunming 650091China

In this paper, the synchronous concurrent dual-band RF signal is used to drive the RF Power Amplifier (PA). The nonlinear characterization of a concurrent dual-band RF PA is discussed while two band signals in the dual-band are modulated by CDMA2000 and WCDMA signals. When the two band signals in the dual-band of the PA are modulated with the same signals, it is found that the nonlinearity of the PA can be expressed by any of the two corresponding baseband data. On the other hand, when the two band signals in the dual-band of the PA are modulated with two different signals, the PA nonlinearity cannot be characterized by any of the two corresponding baseband data. In this case, its nonlinearity has to be denoted by a composite signals consisting of the two baseband signals. Consequently, the requirements for the speed of the A/D converter can be largely reduced. The experimental results with CDMA2000 and WCDMA signals demonstrate the speed of the A/D converter required is only 30 M Sample Per Second (SaPS), but it will be at least 70 M SaPS for the conventional method.

关键词： Concurrent dual-band Power Amplifier (PA) nonlinear characterization Digital base-band Pre-Distortion (DPD)

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nonlinear characterization OF CONCURRENT DUAL-BAND RF POWER AMPLIFIERS

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Journal of Electronics(China) 2012年第Z2期 215-221页

作者： Hui Ming Liu Taijun Ye Yan Zhang Haili* Shen Dongya** Li Liang (Department of Information Science and Engineering, Ningbo University, Ningbo 315211, China) *(Zhejiang College of Textile & Fashion, Ningbo 315211, China) **(Department of Information Science and Engineering, Yunnan University, Kunming 650091, China)

关键词： Concurrent dual-band Power Amplifier (PA) nonlinear characterization Digital base-band Pre-Distortion (DPD)

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characterization and identification towards dynamic-based electrical modeling of lithium-ion batteries

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Journal of Energy Chemistry 2024年第5期92卷 738-758页

作者： Chuanxin Fan Kailong Liu Yaxing Ren Qiao Peng School of Automation Nanjing Institute of TechnologyNanjing 211167JiangsuChina School of Control Science and Engineering Shandong UniversityJinan 250100ShandongChina School of Engineering University of LincolnLincoln LN67TSUK Information Technology Analytics&Operations GroupQueen’s University BelfastBelfast BT95EEUK

Lithium-ion batteries are widely recognized as a crucial enabling technology for the advancement of electric vehicles and energy storage systems in the *** design of battery state estimation and control algorithms in battery management systems is usually based on battery models,which interpret crucial battery dynamics through the utilization of mathematical ***,the investigation of battery dynamics with the purpose of battery system identification has garnered considerable attention in the realm of battery *** methods in terms of linear and nonlinear response of lithium-ion batteries have emerged as a prominent area of study in this *** review has undertaken an analysis and discussion of characterization methods,with a particular focus on the motivation of battery system ***,this work encompasses the incorporation of frequency domain nonlinear characterization methods and dynamics-based battery electrical *** aim of this study is to establish a connection between the characterization and identification of battery systems for researchers and engineers specialized in the field of batteries,with the intention of promoting the advancement of efficient battery technology for real-world applications.

关键词： Lithium-ion battery Battery dynamics nonlinear characterization nonlinear battery model

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