In this article, a distributed optimization problem is investigated via input feedforward passivity. First, an input-feedforward-passivity-based continuous-time algorithm proposed. It shown that the error system of proposed can be decomposed into group individual passive (IFP) systems interact with each other using output feedback information. Based on IFP framework, convergence conditions suit...

Schizophrenic patients experiencing passivity phenomena believe their thoughts and actions to be those of external, or alien, entities. We wished to test the hypothesis that voluntary motor action in such patients would be associated with aberrant patterns of activation within the cerebral motor system. We used H2(15)O PET to study patients while they performed paced joystick movements on two o...

Notions of passivity for a class of switched control systems (SCS) are developed first in this article. We then study the following problems: 1) When is an SCS passive? 2) Does passivity imply Lyapunov stability as in the classical passive systems? 3) How to use passivity as a tool to design controllers to stabilize an SCS? For Problem 1), we derive sufficient conditions for passivity. For prob...

This paper considers the internal stability of an interconnection of two implicit systems based on passivity theory. The passivity for implicit systems is defined as a generalization of the passivity in the traditional input-output framework. We derive a necessary and sufficient condition for the passivity of an implicit system in terms of a constrained linear matrix inequality (CLMI). Based on...

Cyber Physical Systems (CPS) often have continuous components interconnected with systems described by discrete state space. Examples of such discrete components may be supervisory controllers or components implemented in software. To design large scale CPS in a compositional manner it would be useful to define a notion of passivity for these discrete components as well. As a first step towards...

Wheel slippage creates control challenges for wheeled mobile robots (WMR). This paper proposes a new method for haptic teleoperation control of a WMR with longitudinal slippage by using the time-domain passivity control (TDPC) approach. We show the potential nonpassivity for the environment termination caused by the slippage dynamics. The utilized TDPC approach maintains the passivity of teleop...

This paper follows a game-theoretical formulation of the CDMA power control problem and develops new decentralized control algorithms that globally stabilize the desired Nash equilibrium. The novel approach is to exploit the passivity properties of the feedback loop comprising the mobiles and the base station. We first reveal an inherent passivity property in an existing gradient-type algorithm...

The passivity index framework is an alternative method of characterizing energy dissipation in systems. As an analysis tool, it can be used to assess the level of passivity of a system. This opens up a much larger class of systems that can be analyzed using results that are similar to the passivity theorem. Typically indices are considered analytically for systems with an established model. Thi...

We consider the passivity analysis and passivation problems for event-triggered feedback interconnected systems. Based on the location of the event-triggered samplers, we consider two event-triggered control schemes respectively: event-triggered sampler of plant output and event-triggered sampler of controller output. For both schemes, we first derive the conditions to characterize the level of...