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第25届中国控制与决策会议

作者： Tao Wang College of Automation ＆ Electronic Engineering Qingdao University of Science ＆ Technology

ISBN: (纸本)9781467355339

A new car-following model considering the drivers reaction-time delay （DRTD） is presented at first. Then, applying the relationship between the micro and macro variables in traffic flow, we acquire a macro model for traffic flow with the consideration of DRTD effect. The characteristic solution is derived from the hyperbolic equations group which is composed of the new model’s dynamic equation. And the characteristic speeds are consistent with the fundamental principle that vehicles are anisotropic. Stability condition for the macro model is obtained, which is showed that the stability of traffic flow is related to driver’s reaction-time delay.

关键词： Car-following model macro model Driver’s reaction-time delay Traffic flow

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macro model Study for Nonlinear Spring of Tense Torsion Bar in Gap-Closing Type Electrostatic Micromirror

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Journal of Mechanics Engineering and Automation 2012年第7期2卷 446-454页

作者： Gyu II Shim Ryoichi Mimoto Shinya Kumagai Minoru Sasaki Dept. of Advanced Science and Technology Toyota Technological Institute Nagoya 468-8511 Japan

Nonlinear spring characteristics of the tense torsion bar in the gap-closing type electrostatic micromirror are examined. The macro model is introduced for the experimental study. The tension applied in the torsion bar is well controlled using the electromagnetic attraction. This controllability is suited for clearing the nonlinear nature. The tension is confirmed to have the effect to widen the controllable angle range of the mirror suppressing the pull-in. The pull-in angle is observed to increases to about 74% of the mechanical limit angle at the tension of 0,96 N. This is significantly larger than 44% of the case with the linear spring. The larger resonant frequency is maintained. The hardening of the spring can keep the balance with the electrostatic force over the limit of the linear spring. The observed features are explained reasonably with the combination of twisting and bending displacements of the torsion bar.

关键词： Micromirror electrostatic actuator pull-in nonlinear spring macro model

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Novel FGMOS Based PCS Device for Low Power Applications

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Photonic Sensors 2015年第2期5卷 123-127页

作者： Pawan WHIG Syed Naseem AHMAD Department of Electronics and Communication Engineering Rajasthan Institute of Engineering and TechnologyJaipur India Department of Electronics and Communication Engineering Jamia Millia lslamia New Delhi India

The spice model for photo catalytic sensor （PCS） proposed by Whig and Ahmad overcomes several drawbacks like complex designing, non-linearity, and long computation time generally found in the flow injection analysis （FIA） technique by Yoon-Chang Kim et al. for the determination of chemical oxygen demand （COD）. The FIA technique involves the complete analysis including sampling and washing. The flow injection analysis is an analytical method for the measurement of the chemical oxygen demand by using the photochemical column. This method uses a bulky setup and takes 10 minutes to 15 minutes to get the output result which is a tedious and time consuming job. If the conventional method is continuously used for a long time then it is stable only for 15 days. The purpose of this paper is to propose a new floating gate photo catalytic sensor （FGPCS） approach which has low power consumption and more user-friendly, and it is fast in operation by the modeling and optimization of sensor used for water quality monitoring. The proposed model operates under sub-threshold conditions which are appreciated in large integrated system design. The results of simulation are found to be fairly in agreement with the theoretical predictions. The results exhibit near linear variations of parameters of interest with appreciably reduced response time.

关键词： FGPCS spice modeling simulation photo catalytic sensor flow injection analysis macro model

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A review of compact modeling for phase change memory

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Journal of Semiconductors 2022年第2期43卷 74-87页

作者： Feilong Ding Baokang Peng Xi Li Lining Zhang Runsheng Wang Zhitang Song Ru Huang School of Electronic and Computer Engineering Peking UniversityShenzhen 518055China Shanghai Institute of Micro-System and Information Technology Chinese Academy of SciencesShanghai 200050China Institute of Microelectronics Peking UniversityBeijing 100871China

Phase change memory(PCM)attracts wide attention for the memory-centric computing and neuromorphic *** circuit and system designs,PCM compact models are mandatory and their status are reviewed in this *** mod-els and physics-based models have been proposed in different stages of the PCM technology *** model-ing of PCM is indeed more complex than the transistor modeling due to their multi-physics nature including electrical,thermal and phase transition dynamics as well as their *** of the PCM operations including threshold switching,set and reset programming in these models are diverse,which also differs from the perspective of circuit *** the purpose of efficient and reliable designs of the PCM technology,open issues and challenges of the compact modeling are also discussed.

关键词： phase change memory compact model macro model physics-based model

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