检索实习题4

2、课题分析：

中文关键词为：机械系统非线性动力学

英文关键词为：1. nonlinear dynamics 2. mechanical system

3、选择检索工具：Elsevier 数据库

4、构建检索策略：nonlinear dynamics AND mechanical system

5、简述检索过程:

选定在 Elsevier 中期刊、图书、文摘数据库等全部文献资源中检索 2000年以后的关于机械系统的非线性动力学的相关文献。

利用确定的检索策略（nonlinear dynamics AND mechanical system），文献全文（含文献题目、摘要、关键词）

中检索，检到47524 篇相关文献；在文献题目、摘要和关键词中检索，检索到 197 篇相关文献；

在文献关键词中检索到5 篇相关文献；在文献题目中检索到2篇相关文献。

6、整理检索结果：

从以上文献中选择出3 条切题文献

1. Nonlinear dynamics of a two-body nonlinear mechanical system

This article is not included in your organization's subscription. However, you may be able to access this article under your organization's agreement with Elsevier.

J. Awrejcewicz1, a

aThe University of Tokyo, Department of Mechanical Engineering, Hongo, Bunkyo-ku, Tokyo113,Japan

Received 1 August 1990. Available online 13 February 2003.

Abstract

Based on the example of a sixth-order set of nonlinear differential equations governing the dynamics of a mechanical system with three degrees of freedom, this paper presents a numerical method for the systematic tracing of structural changes of the phase flow, which accompanies changes in thechosen system parameters.

On leave from Technical University, Institute of Applied Mechanics, B. Stefanowskiego 1/15, 90-924 Lodz, Poland.

2. Nonlinear dynamics of spin-boson systems: Quantum mechanical and quasi-classical treatment

This article is not included in your organization's subscription. However, you may be able to access this article under your organization's agreement with Elsevier.

R. Steib, a, , J.L. Schoendorffb, H.J. Korschb and P. Reinekera,

a Abteilung Theoretische Physik, Universität Ulm, D-069 Ulm, Germany

b Fachbereich Physik, Universität Kaiserslautern, D-67653 Kaiserslautern, Germany

Available online 14 April 2003.

Abstract

We investigate a quasi-particle coupled to polarization vibrations in a dimer model. This model (harmonic oscillator coupled to a two-level system) is interesting for various physical situations, e.g. the transport of excitons in dimers or the spin- case of the Jaynes-Cummings model. We found that a complementary approach to the usual quasi-classical treatment of the spin-boson model may be more suitable for the spin- case.

Keywords: Energy transfer; Exciton dynamics; Electron-phonon interaction; Spin-boson system; Semiclassical theories

3. A discontinuous output feedback controller and velocity observer for nonlinear mechanical systems*1

B. Xian , a, M. S. de Queiroz , , b, D. M. Dawson , a and M. L. McIntyre a [Author vitae]a Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915, USA

b Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803-13, USA

Received 13 March 2003; Revised 21 November 2003; accepted 2 December 2003. Available online 3 February 2004.

Abstract

In this paper, we develop a new discontinuous output feedback tracking controller for a class of uncertain, nonlinear, multi-input/multi-output, mechanical systems whose dynamics are first-order differentiable. A novel filter design and Lyapunov-type stability analysis are used to prove semi-global asymptotic tracking. As a by-product of the proposed framework, we also present the design of a new simple, discontinuous velocity observer that ensures global asymptotic velocity observation.

Author Keywords: Author Keywords: Nonlinear control; Output feedback; Mechanical systems; Velocity observer

6、全文摘录选择一篇：A discontinuous output feedback controller and velocity observer for nonlinear mechanical systems

一、篇名A discontinuous output feedback controller and velocity observer for nonlinear mechanical systems

二、著者B. Xian , a, M. S. de Queiroz , , b, D. M. Dawson , a and M. L. McIntyre a [Author vitae]

三、著者机构Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915, USA

b Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803-13, USA

Received 13 March 2003; Revised 21 November 2003; accepted 2 December 2003. Available online 3 February 2004.

四、文摘 Abstract

In this paper, we develop a new discontinuous output feedbacktracking

controller for a class of uncertain, nonlinear, multi-input/multi-output,

mechanical systems whose dynamics are first-order differentiable. A

novel filter design and Lyapunov-type stability analysis are used to prove

semi-global asymptotic tracking. As a by-product of the proposed framework, we also present the design of a new simple, discontinuous

velocity observer that ensures global asymptotic velocity observation.

五、关键词Keywords: Nonlinear control; Output feedback; Mechanical systems; Velocity observer

六、正文

1. Introduction and objectives （首段）

Over the years, mechanical systems have served as an interesting benchmark for the design and validation of novel nonlinear control strategies. One problem that has attracted a good deal of interest is the output feedback control of mechanical systems. This problem is of practical importance since many commercially-available mechanical systems are not commonly equipped generally speaking, the separation principle does not hold for nonlinear systems. For these reasons, Model-based observers estimate velocity by mimicking the system dynamics, while filters approximate the behavior of a differentiator over a range of frequencies (e.g., a lead compensator).

（末段）In this paper, we designed a discontinuous controller that requires only output feedback for a general class of uncertain nonlinear MIMO mechanical systems. The class of systems is restricted to those whosedynamics are first-order differentiable. The novelty of this work lies in the approach used to synthesize the control law and velocity filter. Specifically, the form of these components emerged from a new error system development and Lyapunov-type stability analysis. The resulting output feedback control law was proven to semi-globally asymptotically track any bounded, third-order differentiable reference trajectory.

七、参考文献 References

Berghuis, H. and Nijmeijer, H., 1993. A passivity approach to controller-observer design for robots. IEEE Transactions on Robotics and Automation 9 6, pp. 740–754. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (152)

Burg, T., Dawson, D., Hu, J. and de Queiroz, M., 1996. An adaptive partial state feedback controller for RLED robot manipulators. IEEE Transactions on Automatic Control 41 7, pp. 1024–1031.

Canudas de Wit, C. and Fixot, N., 1992. Adaptive control of robot manipulators via velocity estimated feedback. IEEE Transactions on Automatic Control 37 8, pp. 1234–1237. MathSciNet

Choi, J.-H., Misawa, E.A. and Young, G.E., 1999. A study on sliding mode state estimation. ASME Journal of Dynamic Systems, Measurement, and Control 121 6, pp. 255–260. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (10)