检索结果-内蒙古大学图书馆

Software Protection Techniques: control Issues for is Auditors

EDPACS 2006年第10期27卷 1-12页

作者： Randy Coneby Fred Gallegos A manager with PricewaterhouseCoopers in Washington D.C. Prior to assuming that position he was an assistant director for IS Audits in the U.S. Postal Service. Earlier Coneby was an audit manager and an IS auditor with the U.S. Air Force Audit Agency at March AFB California. He received his master of science in business administration from California State Polytechnic University Pomona The MSBA – IS Audit Advisor and a faculty member of the Computer Information Systems Department of California State Polytechnic University Pomona. He has more than 28 years of industry experience in IS Audit and Control. Gallegos has taught for 25 years in this field at the academic and professional level and has published three books and more than 150 articles in the IS field.

S oftware can be duplicated and modified easily and *** does not seem to be much agreement on the best way legally to protect software products against unlawful copying or *** auditors and others who are interested in protecting their organization's investment in software development should learn as much as they can about using the legal tools that are available.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A conversational man-robot interface used in robotics education

A conversational man-robot interface used in robotics educat...

引用

作者： Buiu, Catalin Dumitrache, Ioan Dumitrascu, Alexandru Department of Automatic Control and Systems Engineering Faculty of Automatic Control and Computer Science POLITEHNICA University of Bucharest Spl. Independentei 313 77206 Bucharest Romania

ISBN: (纸本)008045108X

This paper presents a conversational interface that uses the speech recognition and synthesis and animation abilities of two Microsoft software agents in order to assure a more natural and efficient interface with an autonomous robot. The interface is used in the robotics educational process. The basic commands to be given by voice (back, right, etc.) and the control of the agents are implemented in Visual Basic. More complex control programs can be implemented and tested in Matlab and after that executed with a simple voice command. This program is used as a part of an integrated educational strategy in autonomous robotics and was evaluated by a group of students. First experimental results related to the use of this conversational interface compared to traditional robot simulation environments and control of real robots are presented in this paper with related discussions. Copyright © 2005 IFAC.

关键词： Speech recognition

来源：评论

学校读者我要写书评

暂无评论

Improvement of fault detection method for nonlinear black-box systems based on multi-form Quasi-Armax modeling

Improvement of fault detection method for nonlinear black-bo...

引用

作者： Kumamaru, K. Inoue, K. Tsubouchi, F. Söderström, T. Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Fukuoka Japan Department of Automatic Control and Systems Analysis Institute of Technology Uppsala University P.O.Box 27 Uppsala Sweden

ISBN: (纸本)008045108X

This paper is concerned with improvement of the KDI-based fault detection method so far developed by authors for nonlinear black-box systems. When modeling the system, Quasi-ARMAX model with multi-model structure is used. A fault due to unexpected change in system parameters will appear as the change of identified model. Kullback discrimination Information (KDI) can then be used as the fault detection index to evaluate the distortion in identified model. Several schemes to improve the fault detection performance are proposed, as well as the realization of a kind of fault isolation function based on a recognition approach in the model parameter space. The effectiveness of the method is verified through simulation studies on the ship propulsion system constructed for benchmark test. Copyright © 2005 IFAC.

关键词： Fault detection

来源：评论

学校读者我要写书评

暂无评论

A CONVERSATIONAL MAN-ROBOT INTERFACE USED IN ROBOTICS

引用

IFAC Proceedings Volumes 2005年第1期38卷 109-114页

作者： Catalin Buiu Ioan Dumitrache Alexandra Dumitrascu Department of Automatic Control and Systems Engineering “POLITEHNICA” University of Bucharest Faculty of Automatic Control and Computer Science Spl. Independentei 313 77206 Bucharest Romania

关键词： control education autonomous robots speech recognition conversational interface software agent

来源：评论

学校读者我要写书评

暂无评论

On the detection of unknown input in positional control problems with noisy measurements

On the detection of unknown input in positional control prob...

引用

作者： Shinar, Josef Bokor, József Kulcsár, Balázs Israel Institute of Technology Faculty of Aerospace Engineering Haifa 3200 Israel Systems and Control Laboratory Computer Automation Research Institute Hungarian Academy of Sciences P.O.Box 63 Budapest Hungary

ISBN: (纸本)008045108X

The paper examines the conditions for isolating the unknown input detection from the effects of the measurements noise in the important family of positional control problems. The study is motivated by the need of improving the homing performance of interceptor missiles against randomly maneuvering targets. The required isolation is possible if, in addition to noisy relative position measurements, noise-free measurement of the line of slight rate or the relative lateral velocity is available. Although with noisy measurement of line of slight rate the isolation of the input is not possible, the detection filter designed for the noise- free case succeeds to provide a satisfactory estimate of target acceleration, which is needed for an improved homing performance. Copyright © 2005 IFAC.

关键词： Bandpass filters

来源：评论

学校读者我要写书评

暂无评论

IMPROVEMENT OF FAULT DETECTION METHOD FOR NONLINEAR BLACK-BOX systems BASED ON MULTI-FORM QUASI-ARMAX MODELING

引用

IFAC Proceedings Volumes 2005年第1期38卷 101-106页

作者： K. Kumamaru K. Inoue F. Tsubouchi T. Söderström Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Fukuoka Japan Department of Automatic Control and Systems Analysis Institute of Technology Uppsala University P.O.Box 27 Uppsala Sweden

关键词： Fault detection Kullback discrimination information non-linear system parameter estimation quasi-ARMAX model ship propulsion system

来源：评论

学校读者我要写书评

暂无评论

Robust adaptive control of quasi-LPV systems

Robust adaptive control of quasi-LPV systems

引用

IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Xiukun Wei L. Del Re Jindong Tan Faculty of the institute of Design and Control of Machatronical Systems Johannes Kepler University Linz Austria Johannes Kepler Universitat Linz Linz AT Faculty of Department of Electrical and Computer Engineering Michigan Technological University USA

In this paper a robust adaptive pole placement method for a class of linear parameter varying (LPV) system based on input-output description is constructed after the LPV system model, including its un-modeled error model term, is presented. The recursive least square estimation algorithm with dead zone is applied for the parameter estimation. The robust stability of closed-loop system is analyzed and the robust bound is derived. One simulation example illustrates the effectiveness of the control algorithm and demonstrates that the adaptive control based on LPV model can achieve better performance than the controller based on linear time varying (LTV) model

关键词： Robust control Adaptive control Least squares approximation Robustness Parameter estimation Nonlinear systems control systems Programmable control State feedback Robust stability

来源：评论

学校读者我要写书评

暂无评论

Mixed H2/H∞ and robust control of differential linear repetitive processes

Mixed H2/H∞ and robust control of differential linear repet...

引用

IEEE Conference on Decision and control

作者： W. Paszke K. Gakowski E. Rogers A. Kummert D.H. Owens Institute of Control and Computation Engineering University of Zielona Góra Zielona Góra Poland School of Electronics and Computer Science University of Southampton Southampton UK Faculty of Electrical University of Wuppertal Wuppertal Germany Department of Automatic Control and Systems Engineering University of Sheffield Sheffield UK

Repetitive processes are a distinct class of 2D systems (*** propagation in two independent directions) of both systems theoretic and applications interest. They cannot be controlled by direct extension of existing techniques from either standard (termed 1D here) or 2D systems theory. Here we give new results on the design of physically based control laws and, in particular, the first results on a mixed H 2 /H ∞ approach and on H 2 control in the presence of uncertainty in the process model.

关键词： Robust control control systems Linear systems Uncertainty Writing Disk drives Process control Iterative algorithms control engineering computing computer science

来源：评论

学校读者我要写书评

暂无评论

The influence of feedback/feedforward control on relaxed pass profile controllability of discrete linear repetitive processes

The influence of feedback/feedforward control on relaxed pas...

引用

International Workshop on Multidimensional (nD) systems

作者： L. Hladowski K. Galkowski E. Rogers A. Kummert D.H. Owens Institute of Control and Computation Engineering University of Zielona Gora Zielona Gora Poland University of Wuppertal Germany School of Electronics and Computer Science University of Southampton Southampton UK Faculty of Electrical Information and Media Engineering Communication Theory University of Wuppertal Germany Department of Automatic Control and Systems Engineering University of Sheffield Sheffield UK

Repetitive processes are a distinct class of 2D systems (i.e. information propagation in two independent directions) of both systems theoretic and applications interest. They cannot be controlled by direct extension of existing techniques from either standard (termed 1D here) or 2D systems theory. Here we give the first results on how feedback/feedforward control action can be used to influence one form of controllability for processes with discrete dynamics.

关键词： Linear feedback control systems controllability Integrated circuit modeling control engineering computing Vectors Communication system control computer science systems engineering and theory State-space methods Multidimensional systems

来源：评论

学校读者我要写书评

暂无评论

On the selection of appropriate control system design methodologies

On the selection of appropriate control system design method...

引用

作者： Van Willigenburg, L.G. De Koning, W.L. Chalabi, Z.S. Tchamitchian, M. Van Straten, G. Systems and Control Group Wageningen University P.O. Box 17 6700 AA Wageningen Netherlands Faculty of Electrical Engineering Delft University of Technology Mathematics and Computer Science Mekelweg 4 2628 CD Delft Netherlands Public and Environmental Health Research Unit London School of Hygiene and Tropical Medicine University of London Keppel Street London WC1E 7HT United Kingdom INRA Bioclimatologie Domaine StPaul Site Agroparc Cedex 9 84914 Avignon France

ISBN: (纸本)008045108X

We will argue in this paper that the nature and magnitude of model uncertainty dictate the appropriateness of the control system design methodology. To obtain these arguments, we will pursue optimality of the control system design. Note this is a philosophical paper, in which we present our arguments in qualitative terms. We will identify the circumstances under which several control system design methodologies are appropriate. The design methodologies that will be considered are (1) optimal control and optimal feedback design, (2) model predictive control (receding horizon control), (3) active and passive adaptive control and (4) robust control. Robust control strategies are conservative and limit the possible improvements that can be obtained over say classical PID control. However, it will turn out that for certain types of control problems, improvements in performance are indeed limited. Roughly speaking, the area where we may expect (significant) improvement from advanced (optimal) control system design is very much limited by the uncertainty of the systems model. Miracles are not to be expected from advanced control. What can be expected is reflected in an active adaptive optimal control scheme introduced and discussed in this paper. Copyright © 2005 IFAC.

关键词： Robust control

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：