In this paper sliding mode control systems arc considered and a new technique to attenuate chattering is proposed. The technique employs simple , first-order dynamical devices , i.e . an integrator or a low-pass filter, to compensate in part for unknown and changing dist urbance. As a result of this compensation, the magnitnde of the discontinuous control term is essentially reduced. The term d...

This paper presents a neural network global PID-sliding mode control method for the tracking control of robot manipulators with bounded uncertainties. A certain sliding mode controller with PID sliding function is developed. In this controller, the switching gain is tuned by a RBF neural network on the reachable condition of sliding mode. Thus, the effect of chattering can be alleviated. Moreov...

It is well known that sliding mode control is capable of tackling systems with uncertainties. However, the discontinuous control signal causes a significant problem of chattering. An algorithm is proposed in this paper to eliminate chattering by removing the discontinuous control signal when the system is operating near the sliding plane. The transient performance as well as the robustness prop...

an asymptotically stable direct adaptive fuzzy pi sliding modecontroller is proposed for a class of nonlinear uncertain systems. in contrast toother existing approaches of handling disturbances, the proposed approachdoes not require this bound to be known, only requiring that it exists.moreover, a pi control structure is used to attenuate chattering. the approachis applied to stabilize an open-...

We now illustrate the proposed method to make the eigenvalues of matrix A nonresonant through state feedback. Example: Step 1) Let n = 3.

Complete chattering occurs when a structure undergoes theoretically infinite sequence of impacts in finite time, that eventually bring the to state persistent (continuous) contact. This study investigates conditions under which rigid rocking block complete subjected sinusoidal ground excitation. The analysis explains how acceleration amplitude excitation affects time. It also proves there exist...

Relay feedback has a large variety of applications in control engineering. Several interesting phenomena occur in simple relay systems. In this paper, scalar linear systems with relay feedback are analyzed. It is shown that a limit cycle where part of the limit cycle consists of fast relay switchings can occur. This chattering is analyzed in detail and conditions for approximating it by a slidi...

A robust controller with chattering is proposed for variable speed control of a two-bladed horizontal axis wind turbine similar to the DOE MOD-0 model. The chattering term provides robustness against un-modeled non-linearities. To validate the performance of the proposed controller, a dynamic wind model has also been developed. This model is based on using an harmonic oscillator with an additiv...

This paper describes a new meeting support system that helps the hearing impaired to understand the contents of the meeting. The proposed system distinguishes the mainstream of the discussion from other chattering based on the utterances. The situation of the meeting is acquired as a picture using an omni-directional vision sensor, and the system analyzes speaker’s relations from the captured i...