检索结果-内蒙古大学图书馆

International conference on Mechatronics, Electronics and Automotive engineering (ICMEAE)

作者： Manuel Ortiz-Salazar Angel Rodríguez-Liñán Luis M. Torres-Treviño I. López-Juárez Universidad Autónoma de Nuevo León FIME San Nicolás de los Garza Nuevo León México Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional Ciudad de Mexico Ciudad de MÃ©xico MX

This paper proposes a methodology based on Inertial Measurement Units (IMU's) and sensor fusion for the trajectory tracking performed by a human expert, estimating orientation in two dimensions and position in three dimensions. In addition, involving modeling of robot manipulators and the acquired trajectory, a kinematic control is generated for the robot programming. Experimental results have shown that this method is capable of acquire the trajectory performed by a human without the use of expensive Computational Video Systems (SVC's).

关键词： Trajectory Kinematics Robot sensing systems Manipulator dynamics mathematical model

来源：评论

学校读者我要写书评

暂无评论

human motion tracking control for humanoid robot based on the optimized motion retargeting

Human motion tracking control for humanoid robot based on th...

引用

International conference on Informatics in Control, Automation and Robotics (ICINCO)

作者： Wenjie Wang Weiwei Yu Xiansheng Qin Hongbo Wang Jie Hong Yangyang Feng School of Mechanical Engineering Northwestern Polytechnical University Xi'an P.R. China

The main objective of this study is to provide a motion retargeting method for mapping the human motion to the humanoid robot. This paper describes the procedure to generate human-like upper limbs motion of a humanoid robot while maintaining balance. The human motions are acquired by the inertial measurement units (IMU). The motion retargeting method is implemented with four steps: kinematics modelling, inverse kinematics computation, enforcing constraints and difference optimization. Our method integrates multiply existing mature technologies to build a human-robot interaction system to imitate the human motion on a robot. Finally, the method is verified on a humanoid robot Nao to generate a human-like motion. Experimental results demonstrate that the method achieves a good kinematic match.

关键词： humanoid robots Kinematics Tracking End effectors Transforms mathematical model

来源：评论

学校读者我要写书评

暂无评论

Reduced-order models for vertical human-structure interaction

引用

Journal of Physics: conference Series 2016年第1期744卷

作者： Katrien Van Nimmen Geert Lombaert Guido De Roeck Peter Van den Broeck KU Leuven Department of Civil Engineering Structural Mechanics Section Leuven Belgium KU Leuven Department of Civil Engineering Technology Cluster Construction Structural Mechanics and Building Materials Section Technology Campus Ghent Belgium

For slender and lightweight structures, the vibration serviceability under crowd- induced loading is often critical in design. Currently, designers rely on equivalent load models, upscaled from single-person force measurements. Furthermore, it is important to consider the mechanical interaction with the human body as this can significantly reduce the structural response. To account for these interaction effects, the contact force between the pedestrian and the structure can be modelled as the superposition of the force induced by the pedestrian on a rigid floor and the force resulting from the mechanical interaction between the structure and the human body. For the case of large crowds, however, this approach leads to models with a very high system order. In the present contribution, two equivalent reduced-order models are proposed to approximate the dynamic behaviour of the full-order coupled crowd-structure system. A numerical study is performed to evaluate the impact of the modelling assumptions on the structural response to pedestrian excitation. The results show that the full-order moving crowd model can be well approximated by a reduced-order model whereby the interaction with the pedestrians in the crowd is modelled using a single (equivalent) SDOF system.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Artificial Magnetic Nano-Swimmer in Drug Delivery

Artificial Magnetic Nano-Swimmer in Drug Delivery

引用

Iranian conference on Biomedical engineering

作者： Alaeddin Malek Hanif Heidari Maryam Vali Department of Applied Mathematics Tarbiat Modares University Damavand Health Center Shahid Beheshti Medical University

ISBN: (纸本)9781467393522

In this paper a nano-swimmer with length between 10 to 100nm consisting of a motor, filament and hinged boundaries is controlled by mathematical simulations successfully. A nano-swimmer that lies in a heterodimer magnetic nano-particle is proposed based on existed nano-robots. Dynamic of swimming is simulated by using some sequence of shape changes where magnetic forces act on one-ends of nano-swimmer. This idea is applied to simulate drug delivery from specific point of human body to the targeted point where it is assumed transport drug lies in a nano-particle. Here, the hyper-diffusion equation that is a fourth order partial differential equation is proposed to model swimming at nano-scale. The unknown control function (magnetic force) that acts on the boundary is calculated to minimize the drug delivery energy cost. Two novel algorithms for the computation of optimal boundary control and estimation of its error function are proposed. Shape function deformations for the elastic tail of the nano-swimmer for various finite times are depicted. Numerical results for the control function for the nano-scale drug deliver are presented.

关键词： Medical robot Control mathematical modelling

来源：评论

学校读者我要写书评

暂无评论

Fuzzy modelling of uncertain data in the layers of protection analysis

Fuzzy modelling of uncertain data in the layers of protectio...

引用

International conference on Industrial engineering and Operations Management (IEOM)

作者： Nouara Ouazraoui Mouloud Bourareche Rachid Nait-Said Laboratory of Research in Industrial Prevention (LRIP) University of Batna Batna Algeria

Layers of Protection Analysis (LOPA) described in the IEC 61511 standard is one of the most popular methods that enables the adequacy of the layers of protection for an industrial process to be assessed. LOPA has found much broader application as a relatively simple risk assessment methodology. However, an important issue faced by risk analysts is how to deal with uncertainties that arise in the elements of the accident scenario like the severity of consequences, frequency data for initiating event, probability of failure of independent protection layers (IPL) and human reliability. (ICAT'14). This paper presents an approach of fuzzy LOPA which takes into account uncertain and/or vague data. A possibilistic representation of data by fuzzy intervals is proposed. Consequence reduced frequency is computed by extended multiplication using a-cuts method. The proposed approach is illustrated by an application to the protection of an operational system which is a heater.

关键词： Phase frequency detector Uncertainty Frequency estimation Risk management mathematical model Accidents Heating

来源：评论

学校读者我要写书评

暂无评论

Modeling HPV Early Promoter Regulation

Modeling HPV Early Promoter Regulation

引用

Annual International conference of the IEEE engineering in Medicine and Biology Society

作者： A. Giaretta B. Di Camillo L. Barzon G. M. Toffolo the Department of Information Engineering University of Padova via Gradenigo 6/b Padova 35131 Italy the Department of Molecular Medicine University of Padova via A. Gabelli 63 Padova 35131 Italy

ISBN: (纸本)9781424492695

In high risk forms, human papillomaviruses (HPV) can either induce or promote cancerous lesions, especially cervical cancer which is considered the second most common cancer in the women worldwide. HPV life cycle is tightly linked to the infected cell differentiation program and its evolution is strictly joined to the switch between the early and the late viral polycistronic promoters. The aim of this study is to develop a novel mathematical model which collects and structures the available biologic knowledge on the early promoter regulation for HPV in episomal form. The model includes the main regulation by E_2 viral protein as well as a novel discovered co-regulation function mediated by the viral E1 protein. Only by including both E_2 and E1 regulatory effect the model is able to correctly predict the temporal behaviour of the early promoter switching off. A possible use of the model as in silico tool to evaluate new antiviral therapies is discussed.

关键词： HPV early promoter switching off model as in silico tool human Papilloma Virus Life cycle Promoter Cell Differentiation Regulation (biology) Standing Orders mathematical Model Strictly Switches

来源：评论

学校读者我要写书评

暂无评论

Managing the Uncertainty of Data Fusion from Different Sources in modelling Route Choice behaviour

Managing the Uncertainty of Data Fusion from Different Sourc...

引用

International conference on Intelligent Transportation

作者： Marinelli Mario Leonardo Caggiani Michele Ottomanelli Dept. of Civil Environ. Building Eng. Tech. Univ. of Bari Bari Italy Department of Civil Environmental Building Engineering and Chemistry Technical University of Bari Bari Italy

In this paper, a method for fusing data relevant both to drivers' experience and provided information about travel time is presented. The method takes into account the "compatibility" of data originating from different sources, and provides information about acceptability of results. The influence of uncertainty on drivers' compliance with provided information is examined in detail, according to the Uncertainty-based Information Theory. The data fusion results then in an updating of the expected travel time. Finally, the travelers compare the updated travel times of alternatives and choose, among them, the best one from their point of view. The proposed model has been applied to a test network where two different information sources have been considered. Results highlight the effectiveness of the model in quantifying and simulating drivers' compliance with information.

关键词： Uncertainty Vehicles Radio frequency Data integration mathematical model Data models Distance measurement

来源：评论

学校读者我要写书评

暂无评论

Stochastic energy balancing of renewable sources in a smart grid

Stochastic energy balancing of renewable sources in a smart ...

引用

Australasian Universities Power engineering conference, AUPEC

作者： Hassan Shirzeh Fazel Naghdy Philip Ciufo Montserrat Ros School of Electrical Computer and Telecommunications Engineering University of Wollongong Australia

In the current research, a smart grid is considered as a network of distributed interacting nodes represented by renewable energy sources, storage and loads. The source nodes connect or disconnect in a stochastic manner due to the intermittent nature of natural resources such as wind and solar irradiance. Prediction and stochastic modelling of electrical energy flow is a critical task in such a network to achieve load levelling and/or peak shaving in order to minimise the fluctuation between off peak and peak energy demand. The behaviour of source nodes in this grid is modelled and administered through a scheduling strategy control algorithm using the historical data collected from the system. The stochastic model predicts future power consumption/injection to determine the power required for storage components. The proposed stochastic model based on Box-Jenkins method satisfies two major objectives. It predicts the most efficient state of electrical energy flow between a distribution network and nodes as well as minimising the peak demand and off peak consumption of deriving electrical energy from the main grid. MATLAB/Simulink is deployed to simulate the platform. The performance of the models is validated against autoregressive moving average (ARIMA) and Markov Chain models. The results demonstrate that the proposed method outperforms both ARIMA and Markov Chain model. Results are presented, the strengths and limitations of the approach are discussed, and possible future work is described.

关键词： Batteries Stochastic processes Predictive models Renewable energy sources Nickel mathematical model Hidden Markov models

来源：评论

学校读者我要写书评

暂无评论

Multiphysics modelling of a resistive polymeric sensor for VOC

Multiphysics modelling of a resistive polymeric sensor for V...

引用

IEEE International conference on Industrial Technology (ICIT)

作者： Jesús García-Guzmán Adriana Mendoza-Gutiérrez Jorge A. Vélez-Enríquez Alfredo Ramírez-Ramírez Farah H. Villa-López Facultad de Ingeniería Mecánica y Eléctrica Universidad Veracruzana Xalapa México School of Engineering University of Warwick Coventry United Kingdom

ISBN: (纸本)9781479978014

A smart ASIC chip was previously designed, fabricated and tested for monitoring of volatile organic compounds (VOC), with both signal processing electronics and resistive sensors integrated within a single CMOS device. The ASIC has been successfully tested using different types of sensitive materials, including carbon black-polymer composites and bi-functional linker molecules with gold nanoparticles. Different geometries and configurations have been designed for each generation of the device. In the interest of getting a better understanding of the sensor behaviour, which is affected by a number of physical phenomena, namely temperature, humidity, chemical properties of the sensing materials, and geometry of the electrodes, among others, a novel multiphysics model of the device has been developed and simulation results are reported in this paper. The model explores coupled electrical and thermal behaviour of the resistive microsensors obtained after depositing sensing materials upon the electrodes built in the second metal layer of a CMOS process. The results show the distribution of electric potential and the distribution of temperature obtained for a set of resistive sensors made out of carbon black-polymer composites.

关键词： Electrodes Application specific integrated circuits mathematical model Temperature sensors Heating Geometry Microsensors

来源：评论

学校读者我要写书评

暂无评论

mathematical modelling to Evaluate the Superplastic Material Constants by Bulge Test

Mathematical Modelling to Evaluate the Superplastic Material...

引用

3rd International conference on Machine Design and Manufacturing engineering (ICMDME)

作者： Giuliano, G. Univ Cassino DICeM I-03043 Cassino FR Italy

ISBN: (纸本)9783038351801

The mechanical behaviour of a superplastic material is often modelled by the power law relationship between the equivalent flow stress, the equivalent strain and the equivalent strain-rate at least over a limited range of strain rates. This paper introduces an original mathematical modelling to determine the superplastic material constants m, n and K by means of experimental tests carried out using a standard forming die geometry.

关键词： mathematical modelling Bulge test Material constants Power law Inverse analysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：