检索结果-内蒙古大学图书馆

State Estimation and Fault Detection for Linear Switched Systems with Unstable Internal Dynamics *

IFAC Proceedings Volumes 2012年第20期45卷 522-527页

作者： H. Ríos D. Efimov J. Davila T. Raïssi L. Fridman A. Zolghadri National Autonomous University of Mexico Department of Control Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F The Non-A project at INRIA - LNE Parc Scientifique de la Haute Borne 40 avenue Halley Bt.A Park Plaza 59650 Villeneuve d'Ascq France National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F University of Bordeaux IMS-Lab Automatic Control Group 351 cours de la libration 33405 Talence France Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F.

The problem of simultaneous estimation of the continuous and discrete state with additive faults in linear switched systems is addressed. Under mild structural conditions a robust estimator is designed to solve the problem. The proposed strategy includes a technique for fault detection. Simulation results support the proposed estimation scheme.

关键词： Switched systems Fault detection Unstable internal dynamics Sliding-Mode

来源：评论

学校读者我要写书评

暂无评论

State Estimation for Linear Switched Systems with Unknown Inputs *

引用

IFAC Proceedings Volumes 2012年第9期45卷 271-276页

作者： H. Ríos D. Efimov J. Davila T. Raïssi L. Fridman A. Zolghadri National Autonomous University of Mexico Department of Control Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F The Non-A project at INRIA - LNE Parc Scientifique de la Haute Borne 40 avenue Halley Bt.A Park Plaza 59650 Villeneuve d'Ascq France Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F University of Bordeaux IMS-Lab Automatic Control Group 351 cours de la libration 33405 Talence France National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F

The continuous and discrete state estimation problem in linear switched systems with unknown inputs and unstable internal dynamics is addressed. A robust observer based on High-Order Sliding-Mode is proposed to solve ... 详细信息

关键词： Switched systems State estimation Unknown inputs Sliding-Mode

来源：评论

学校读者我要写书评

暂无评论

Open-loop control for 2DOF robot manipulators with antagonistic bi-articular muscles

Open-loop control for 2DOF robot manipulators with antagonis...

引用

IEEE Conference on control Technology and Applications (CCTA)

作者： Keisuke Sano Hiroyuki Kawai Toshiyuki Murao Masayuki Fujita K. Sano is with Graduate Program in Mechanical Engineering Kanazawa Institute of Technology Ishikawa Japan H. Kawai is with Department of Robotics Kanazawa Institute of Technology Ishikawa Japan T. Murao is with Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo Japan Department of Mechanical and Control Engineering Tokyo Institute of Technology Tokyo Japan

ISBN: (纸本)9781467345033

This paper investigates open-loop control, which does not need the joint angles and velocities, for two degree of freedom(2DOF) robot manipulators with antagonistic bi-articular muscles which are passing over adjacent two joints and acting the both joints simultaneously. The manipulator dynamics of three muscle torques, we call the bi-articular manipulator dynamics, is constructed in order to design the control input. Stability analysis with respect to our proposed control law is discussed based on the Lyapunov method. Our approach is inspired by the fact that humans do not measure the joint angles and velocities explicitly, Finally, simulation results are shown in order to confirm the proposed method and given a design procedure in order to assign the tuning parameter.

关键词： Joints Muscles Manipulator dynamics Humans Lyapunov methods

来源：评论

学校读者我要写书评

暂无评论

Triangular formation control using range measurements: An application to marine robotic vehicles

引用

IFAC Proceedings Volumes 2012年第5期45卷 112-117页

作者： Jorge M. Soares A. Pedro Aguiar António M. Pascoal Marco Gallieri Laboratory of Robotics and Systems in Engineering and Science Instituto Superior Técnico Technical University of Lisbon Av. Rovisco Pais 1049-001 Lisboa Portugal School of Architecture Civil and Environmental Engineering École Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland Control Group Engineering Department Sidney Sussex College University of Cambridge CB21PZ Cambridge UK

This paper addresses the problem of maintaining an autonomous robotic vehicle in a moving triangular formation by regulating its position with respect to two leader vehicles. The robotic vehicle has no a priori knowledge of the path described by the leaders and its goal is to follow them by constantly regulating the inter-vehicle distances to a desired fixed value, using range-only measurements. To solve this station keeping problem, we propose a control strategy that estimates the formation speed and heading from the ranges obtained to the two leading vehicles, and uses simple feedback laws for speed and heading commands to drive suitably defined common and differential errors to zero. For straight-line motion, we provide guaranteed conditions under which the proposed control strategy achieves local convergence of the distance errors to zero. We also indicate how our design procedure can be extended to full dynamic models of marine robotic vehicles equipped with inner loops for yaw and speed control. Simulation results using realistic models are described and discussed.

关键词： Autonomous Vehicles Marine Systems control Laws Lyapunov Stability Formation control Station Keeping Triangular Formations

来源：评论

学校读者我要写书评

暂无评论

Application of a visual measurement technique to the assessment of electrodynamic stamping

Solid State Phenomena

引用

Solid State Phenomena 2011年 177卷 1-9页

作者： Bednarczyk, Józef Sioma, Andrzej Department of Process Control Faculty of Mechanical Engineering and Robotics AGH University of Science and Technology in Krakow Al. Mickiewicza 30 30-059 Krakow Poland

This paper discusses a visual method of measuring the geometric parameters of elements produced by electrodynamic stamping. This paper presents also electrodynamic method which is an unconventional machining technology, which complements the capabilities of traditional technologies, in particular as regards the formation of metal elements with low-profile dies of complex shape. The article discusses issues related to resolution of the vision system, resolution of laser beam analysis, and resolution relating to the measurement of the height profile on the surface of the product. Based on the model constructed in such a way, measurements are presented in order to assess the dimensional parameters. Based on tests and analyses of the three-dimensional model, a range of inspection tasks using 3D vision systems is indicated. © (2011) Trans Tech Publications, Switzerland.

关键词： Electrodynamics

来源：评论

学校读者我要写书评

暂无评论

Vision-Based Segregation Behaviours in a Swarm of Autonomous Robots

Vision-Based Segregation Behaviours in a Swarm of Autonomous...

引用

12th Annual Conference on Towards Autonomous Robotic Systems, TAROS 2011

作者： Price, Michael J. Groß, Roderich Natural Robotics Lab Department of Automatic Control and Systems Engineering The University of Sheffield Sheffield United Kingdom

ISBN: (纸本)9783642232312

The accelerating development and usage of autonomous robots has led to increased interest in decentralised systems and the cooperation of individual elements within a swarm, in particular the ability to self-organise and form patterns or self-segregate. Such segregation is readily exhibited in nature, as highlighted by prior work looking at the collective sorting of brood items by ant colonies [1,3]. This work focuses on the ability of robots to spatially segregate themselves. In particular, it takes inspiration primarily from the Brazil nut effect [6], which is responsible for the emergent striped patterns observed when a container holding particles of different sizes is agitated. © 2011, Springer-Verlag Berlin Heidelberg.

关键词： Robots

来源：评论

学校读者我要写书评

暂无评论

Cooperative Multi-robot Box Pushing Inspired by Human Behaviour

Cooperative Multi-robot Box Pushing Inspired by Human Behavi...

引用

12th Annual Conference on Towards Autonomous Robotic Systems, TAROS 2011

作者： Chen, Jianing Groß, Roderich Natural Robotics Lab Department of Automatic Control and Systems Engineering The University of Sheffield Sheffield United Kingdom

ISBN: (纸本)9783642232312

This paper investigates mechanisms underlying cooperative behaviour in a group of miniature mobile robots around the problem of coordinating a group of robots to push collectively a heavy object. Numerous solutions to this problem have been proposed [5,7,4]. The performance of these however typically deteriorates as the number of robots increases to more than a dozen. The cause of this is often said to be robot interference—there are many robots but insufficient space to manipulate the object effectively. The situation is particular difficult when the object itself occludes the view of robots [3]. In this case, robots can benefit from division of labour (e.g., see [2]). Here, we take inspiration of the division of labour in teams of humans pushing a large object towards a target location: persons who can see the target push the box only when the transporting direction needs to be corrected, while all other persons simply push the box forward. The two roles in this cooperation are indicated in Fig. 1(a). © 2011, Springer-Verlag Berlin Heidelberg.

关键词： Behavioral research

来源：评论

学校读者我要写书评

暂无评论

Optimal location of an active segment of magnetorheological fluid layer in a sandwich plate

Optimal location of an active segment of magnetorheological ...

引用

International Carpathian control Conference

作者： Snamina, Jacek Department of Process Control Faculty of Mechanical Engineering and Robotics AGH University of Science and Technology Krakow Poland

ISBN: (纸本)9781612843599

In the present study a sandwich plate, of rectangular form, with magnetorheological (MR) fluid core is investigated. The plate consists of two outer layers made of aluminium and an MR fluid layer in between. The plate edges are clamped. It was assumed that the aluminium layers are pure elastic. The energy is dissipated in MR fluid layer. Additional assumptions concerning displacements, deformations and stresses are introduced in calculations. The active segment of MR fluid layer is placed in various parts of plate. The optimal positions of active segment for selected modes of vibration are determined. © 2011 IEEE.

关键词： Magnetorheological fluids

来源：评论

学校读者我要写书评

暂无评论

Forming Nested 3D Structures Based on the Brazil Nut Effect

Forming Nested 3D Structures Based on the Brazil Nut Effect

引用

12th Annual Conference on Towards Autonomous Robotic Systems, TAROS 2011

作者： Foster, Stephen Groß, Roderich Natural Robotics Lab Department of Automatic Control and Systems Engineering The University of Sheffield Sheffield United Kingdom

ISBN: (纸本)9783642232312

This study investigates the formation of nested structures in swarms of intelligent agents that can freely move in three dimensions. The underlying segregation mechanism is inspired by the Brazil nut effect, which occurs when granular mixtures are subjected to vibrations [6,1]. Similar effects were reported for brood items sorted by ants [3]. This sorting behaviour was validated with swarms of mobile robots [7,5]. Different from these studies we are concerned with sorting the agents themselves. In [4], we proposed a controller based on the Brazil nut effect that was capable of segregating groups of simulated e-puck robots reliably in two dimensions. In the present study, we investigate a 3D particle system implemented in NetLogo1. The agentsmimic the behaviour of particles of distinct sizes. The motion of each agent is determined by three types of vectors [4]: (i) a repulsion vector for every agent that intrudes the particle’s virtual body, (ii) a random vector simulating vibrations, (iii) and a "gravitational" vector that points to a "centre" location. The agents do not communicate. However, the repulsion behaviour requires them to sense each others’ relative positions within their particle range. The segregation quality is measured as the percentage of pairs of particles from different groups that are segregated correctly (based on distance to centre) [4]. A value of 100% corresponds to perfect structures with all large agents surrounding the small agents, 50% corresponds to purely random structures, whereas 0% corresponds to perfect but inverted structures. © 2011, Springer-Verlag Berlin Heidelberg.

关键词： Vectors

来源：评论

学校读者我要写书评

暂无评论

Evaluation of the operational parameters of ropes

Solid State Phenomena

引用

Solid State Phenomena 2011年 177卷 125-134页

作者： Sioma, Andrzej Tytko, Andrzej Department of Process Control Faculty of Mechanical Engineering and Robotics AGH University of Science and Technology in Krakow al. Mickiewicza 30 30-059 Krakow Poland Department of Rope Transport Faculty of Mechanical Engineering and Robotics AGH University of Science and Technology in Krakow al. Mickiewicza 30 30-059 Krakow Poland

This paper discusses a visual method of measuring the geometric parameters of ropes and evaluating their wear based on measurements of a three-dimensional rope model. The 3D model is created using the method of laser triangulation. Selection of appropriate geometry of camera and laser lighting arrangement allows collection of the height profile of the observed rope surface in the selected cross-section and, subsequently, building of a 3D model. The resulting model is a representation of the actual dimensions of the rope and allows determination of the parameters describing its basic geometric dimensions and condition of rope surface. Determination of those values and parameters allows estimation of the degree of rope wear. The article discusses issues related to resolution of the vision system, resolution of laser beam analysis, and resolution relating to the measurement of the height profile on the surface of the rope. Based on the model constructed in such a way, measurements are presented in order to assess the dimensional parameters and surface defects in sample rope structures. Based on tests and analyses of the three-dimensional model, a range of inspection tasks using 3D vision systems is indicated. © (2011) Trans Tech Publications, Switzerland.

关键词： Triangulation

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：