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Found 18 papers, 0 papers with code
Power based adaptive compensator of output oscillations
The proposed compensator is derived for second-order systems, while an extension to higher-order dynamics, like e. g. in case of two-inertia systems, is also provided.
Adaptive time delay based control of non-collocated oscillatory systems
Time delay based control, recently proposed for non-collocated fourth-order systems, has several advantages over an observer-based state-feedback compensation of the low-damped oscillations in output.
Super-twisting based sliding mode control of hydraulic actuator without velocity state
This paper provides a novel surface design and experimental evaluation of a super-twisting algorithm (STA) based control for hydraulic cylinder actuators.
Robust asymptotic observer of motion states with nonlinear friction
This paper revisits the previously proposed linear asymptotic observer of the motion state variables with nonlinear friction and provides a robust design suitable for both, transient presliding and steady-state sliding phases of the relative motion.
Robust two-degrees-of-freedom control of hydraulic drive with remote wireless operation
In this paper, a controller design targeting the remotely operated hydraulic drive system is presented.
Time-delay based output feedback control of fourth-order oscillatory systems
The delayed output feedback requires only the oscillation frequency to be known and allows for a robust control design that leads to cancelation of the resonance peak.
Energy dissipation and hysteresis cycles in pre-sliding transients of kinetic friction
In this paper, we discuss the energy dissipation and convergence during the pre-sliding cycles and show how a piecewise smooth force-displacement hysteresis map enters into the energy balance of an unforced system of the second order.
Disturbance sensitivity analysis and experimental evaluation of continuous sliding mode control
Continuous higher order sliding mode (CHOSM) controllers are new efficient tool for disturbance rejection.
Motion control with optimal nonlinear damping: from theory to experiment
The linear approximation by two-parameters model forms the basis for designing the PD reference controller, which fixed feedback gain is the same as for the optimal nonlinear damping control.
Comparison of Fractional-Order and Integer-Order H-infinty Control of a Non-Collocated Two-Mass Oscillator
Based on the linearized model both controllers are designed to be comparable, i. e. they show a similar crossover frequency in the open loop and the final controller order is reduced to the same range for both designs.
Fractional-Order Partial Cancellation of Integer-Order Poles and Zeros
The key idea of this contribution is the partial compensation of non-minimum phase zeros or unstable poles.
Analysis of relay-based feedback compensation of Coulomb friction
Standard problem of one-degree-of-freedom mechanical systems with Coulomb friction is revised for a relay-based feedback stabilization.
Dynamics of inertial pair coupled via frictional interface
This paper deals with a generalized motion problem in systems with a free (of additional constraints) friction interface, assuming the classical Coulomb friction with discontinuity at the velocity zero crossing.
Convergent dynamics of optimal nonlinear damping control
Following Demidovich's concept and definition of convergent systems, we analyze the optimal nonlinear damping control, recently proposed [1] for the second-order systems.
Inversion-free feedforward hysteresis control using Preisach operator
We introduce a new inversion-free feedforward hysteresis control using the Preisach model.
One-parameter robust global frequency estimator for slowly varying amplitude and noisy oscillations
The proven global convergence also allows for slowly varying amplitudes, which is useful for applications with damped oscillations or additionally shaped harmonic signals.
Stick-slip and convergence of feedback-controlled systems with Coulomb friction
An analysis of stick-slip behavior and convergence of trajectories in the feedback-controlled motion systems with discontinuous Coulomb friction is provided.
Optimal terminal sliding-mode control for second-order motion systems
While TSM manifold allows for different forms of the sliding variable, which are satisfying the $q/p$ power ratio of the measurable output state, we demonstrate that $q/p=0. 5$ is the optimal one for the second-order Newton's motion dynamics with a bounded control action.
