Results 291 to 300 of about 27,343,756 (351)

Controllability of Damped Flexible Systems

IFAC Proceedings Volumes, 1989
Abstract Exact controllability of some damped flexible systems is developed. It is based on a generalized version of Hilbert Uniqueness Method (developed by Lions) using semigroup approach. Two second order evolution equations with damping are treated and corresponding illustrative examples are given.
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The evolution of damp control

Journal of Building Survey, Appraisal & Valuation, 2020
Deterioration of the built environment as a result of dampness has long been considered, with evidence of this dating back to Roman times. Much of the way in which our buildings have evolved is associated with the control of moisture. In this paper we review methods to prevent issues of moisture rising into walls by capillary action, both at the ...
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Exact Controllability of the Damped Wave Equation

SIAM Journal on Control and Optimization, 1997
Summary: We study the controllability problem for a distributed parameter system governed by the damped wave equation \[ u_{tt}-\frac{1}{\rho(x)}\frac{d}{dx}\left(p(x)\frac{du}{dx}\right)+ 2d(x)u_t+q(x)u=g(x)f(t), \] where \(x\in(0,a)\), with the boundary conditions \[ u(0)=0,\quad (u_x+hu_t)(a)=0,\quad h\in{\mathbb C}\cup\{\infty\}.
Shubov, Marianna A., Martin, Clyde F., Dauer, Jerald P., Belinskiy, Boris P.   +3 more
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Damping control with consideration of dynamics of environment

Proceedings of 1993 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS '93), 2002
Most of the explicit force control algorithms published so far assume the switching of the control law from position control to force control when a transition occurs from a free motion to a constrained motion, but the ideal switching of the control law is impossible for a rapid transition.
Hiroshi Wada, Toshio Fukuda, Kazuhiro Kosuge, Fumihito Arai, Keigo Watanabe   +4 more
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Control of Exponentially Damped Sinusoidal Signals

2007 American Control Conference, 2007
An internal model based adaptive algorithm for canceling disturbances composed of sums of exponentially damped sinusoidal (EDS) signals is presented. The time varying state variables of an internal model principle controller in a feedback loop can provide estimates of the EDS signal parameters, the frequency and the damping factor.
Jin Lu 0005, Lyndon J. Brown
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Robust damping control of mobile manipulators

IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), 2002
A novel robust control technique, robust damping control (RDC), is introduced. An RDC controller is further developed for the motion control of a mobile manipulator subject to kinematic constraints. The knowledge of dynamic parameters of the mobile manipulator is assumed to be completely unknown.
Sheng Lin, Andrew A. Goldenberg
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Weakly Damped Robot Arm Control

IFAC Proceedings Volumes, 1994
A plant consisting of two rotating masses coupled with a leaf spring is driven by a dc motor. The task is to control the position of the second mass, where only its position and the motor current are measurable. It is shown that a control observer approach or PI-control based on a reconstructed signal leads to better results for the overall performance
J.W. GOLDYNIA, R. HORNISCHER, R. NOISSER
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Small-Signal Stability Analysis and Active Damping Control of DC Microgrids Integrated With Distributed Electric Springs

IEEE Transactions on Smart Grid, 2020
Series DC electric springs (DCESs) are a state-of-the-art demand-side management (DSM) technology with the capability to reduce energy storage requirements of DC microgrids by manipulating the power of non-critical loads (NCLs).
Ali Hosseinipour, H. Hojabri
semanticscholar   +1 more source

Structural control with dissipative damping devices

Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301), 2002
Structural vibration mitigation using semiactive control strategies has received special attention recently due to the attractive properties of semiactive devices. The main restriction of a semiactive device is that it can only produce dissipative forces, which may be expressed in mathematical terms as a nonlinear inequality constraint. Standard active
Erik A. Johnson, Baris Erkus
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An approach to higher damping capacity: a comparison of material damping with computer-controlled damping

Journal of Alloys and Compounds, 1994
Abstract An approach to higher damping by positively utilizing computer-aided control techniques has been investigated by comparing the relative magnitudes of active (computer-controlled) damping and material damping. The active damping effect increases the damping capacity of a brass beam vibration system from δif=0.012 (logarithmic decrement value ...
Hisashi Kawabe, Kazunobu Yoshida
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