by Nicholas E. Kottenstette This dissertation shows how to develop wireless networked embedded control systems (wnecs) in which the controller and the plant are isolated and can only interact over a wireless network. Many of the new results presented are based on passivity and scattering theory. In particular we show how to: 1. synthesize discrete time passive, strictly-input passive, and stric...

We present a framework to synthesize lm 2 -stable control networks which are subject to delays and data dropouts. This framework can be applied to control systems which use “soft-real-time” cooperative schedulers and wired or wireless network feedback. The approach applies to passive plants and controllers that can be either linear, nonlinear, and (or) time-varying. This framework is based on f...

BACKGROUND Because of the magnitude of the global tobacco epidemic, the World Health Organisation developed the Framework Convention on Tobacco Control (FCTC), an international legally binding treaty to control tobacco use. Adoption and implementation of specific tobacco control measures within FCTC is an outcome of a political process, where social norms and public opinion play important roles...

Bipedal walking has been demonstrated through physical and computer simulations by McGeer [1] to be possible without actuation or control within a range of shallow slopes. Results from such passive dynamic walkers have led many researchers to believe the mechanics of walking should be understood, in addition to the activation and control issues, for biped locomotion to be realized. Recent work ...

diabetes mellitus is accompanied with disturbances in learning, memory, and cognitive skills in the humans and experimental animals. due to the anti-diabetic and antioxidant activity of pelargonidin (pg), this research study was conducted to evaluate the efficacy of chronic oral pg on alleviating learning and memory disturbance in streptozotocin-diabetic rats. male wistar rats were divided into...

In this work, a new strategy to design passive energy dissipation systems for vibration control of large structures is presented. The method is based on the equivalence between passive damping systems and fully decentralized static velocity-feedback controllers. This equivalence allows to take advantage of recent developments in static output-feedback control design to formulate the passive-dam...

INTRODUCTION As shown by McGeer (1990), the passive dynamics of the legs are sufficient to walk down a gentle slope with no external control, and no external energy input save from gravity. Here we consider different models based on passive dynamics, including actively powered models that still make use of passive dynamic principles. We consider the stability of these models, and the implicatio...

The unsteady, compressible, thin-layer Navier-Stokes equations are used to numerically study the passive control of steady and unsteady supersonic asymmetric flows around circular and noncircular cones. The main computational scheme of the present study is an implicit upwind, flux-difference splitting, finite-volume scheme. Passive control of flow asymmetry is studied by using a vertical fin in...

In this paper, passive uncertainties are introduced and we deal with the robust passive observer-based control problem for a class of singular systems, and then provide the sufficient conditions of the passive control for the closed-loop systems of this kind of systems, whose controller is based on observer. Finally two numerical examples are provided to show the usefulness and the feasibility ...

background: passive or environmental smoking is one of the important health problems, to which many adults and children are exposed in involuntary status. methods: in this hospital based case-control study, household exposure to tobacco smoke as an estimate of passive smokers was conducted in hamadan, western iran. the purpose was to find the relationship between environmental smoking and incid...