Results 221 to 230 of about 18,172 (251)

Output feedback variable structure-like control of nonlinear mechanical systems

42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004
In this paper, we develop a new output feedback, variable structure-like (discontinuous) 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.
Bin Xian, Marcio S. de Queiroz, Darren M. Dawson, Michael L. McIntyre   +3 more
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Study of an experimental electro-mechanical feedback oscillator with special nonlinearity

Physics Letters A, 1989
Abstract An electro-mechanical feedback oscillator with special nonlinearity is studied experimentally and theoretically. A stable state and a modulated state are recorded. Based on the analysis of the relevant differential equations, we give an explanation of the experiments and the criterion of the stability of the system.
Guozhen Zhu, Yuguang Liu
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Paradoxical enhancement of neuronal bursting response to negative feedback of autapse and the nonlinear mechanism

Chaos, Solitons & Fractals, 2021
Abstract Paradoxical phenomena such as synchronization and post inhibitory rebound spike induced by the inhibitory effects are important for both nonlinear science and neuroscience. In the present paper, a novel paradoxical example for the bursting activity modulated by the negative self-feedback of the inhibitory autapse and the dynamical mechanism ...
Bo Lu, Huaguang Gu, Xianjun Wang, Hongtao Hua   +3 more
openaire   +1 more source

On the applicability of linear feedback for nonlinear systems in fluid mechanics

Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251), 1999
Examines the application of linear optimal control theory to a low-order nonlinear chaotic convection problem. Linear control feedback is found to be fully effective only when it is switched off while the state is far from the desired equilibrium point, relying on the attractor of the system to bring the state into a neighborhood of the equilibrium ...
openaire   +1 more source

Stability and tracking performance of dynamic visual feedback control for nonlinear mechanical systems

Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2002
This paper investigates a robot motion control problem with visual information. First, the model of the relative rigid body motion and the nonlinear observer are shown in order to derive the visual feedback system. Next, a design algorithm for the 3D visual feedback control problem which contains the manipulator dynamics are considered.
Akira Maruyama, Hiroyuki Kawai, Masayuki Fujita   +2 more
openaire   +1 more source

Modal self-excitation in a class of mechanical systems by nonlinear displacement feedback

Journal of Vibration and Control, 2016
Many devices and processes utilize self-excited oscillation to enhance performance. Recently, much research work has been devoted to the induction of self-excited oscillation in mechanical systems by nonlinear feedback. The present paper investigates the efficacy of a displacement feedback technique in generating self-excited oscillation at the desired
Anindya Malas, Shyamal Chatterjee
openaire   +1 more source

The nonlinear mechanism for the same responses of neuronal bursting to opposite self-feedback modulations of autapse

Science China Technological Sciences, 2021
In the traditional viewpoint, inhibitory and excitatory effects always induce opposite responses. In the present study, the enhanced bursting activities induced by excitatory autapses, which are consistent with the recent experimental observations, and those induced by inhibitory autapses, which is a paradoxical phenomenon, were simulated using the ...
YuYe Li, HuaGuang Gu, Bing Jia, XueLi Ding   +3 more
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Linear Feedback Control of Position and Contact Force for a Nonlinear Constrained Mechanism

Journal of Dynamic Systems, Measurement, and Control, 1990
A feedback control problem for a constrained mechanism is formulated and solved. The mechanism is controlled by forces applied to the mechanism which are to be adjusted according to a linear control law, based on feedback of the positions and velocities of the mechanism and feedback of the constraint force on the mechanism.
H. McClamroch, D. Wang
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Nonlinear feedback anti-control of limit cycle and chaos in a mechanical oscillator: theory and experiment

Nonlinear Dynamics, 2021
Though engineers believe that self-excited oscillation and chaos is detrimental, recent research has revealed that self-excited periodic and chaotic oscillation can be effectively utilized in many engineering processes and devices for significant benefits.
Bhavik Patel, Prasanjit Kumar Kundu, Shyamal Chatterjee   +2 more
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A nonlinear feedback model for the mechanical response of outer-hair-cell sterocilia

The Journal of the Acoustical Society of America, 1982
There is some experimental evidence that the mechanical cochlear function is strongly influenced by the efferent innervation of outer-hair-cell stereocilia (OHCS). [See, e.g., D. C. Mountain, Science 210, 71–72 (1980); J. H. Siegel and D. O. Kim, Hear. Res.
Shozo Koshigoe, Wai-Kwong Kwok, Arnold Tubis   +2 more
openaire   +1 more source