Gregory C. Walsh and Hong Ye and Linda Bushnell1 Department of Mechanical Engineering University of Maryland at College Park, MD 20742 [email protected], [email protected] Abstract In this paper we introduce a novel control network protocol, Try-Once-Discard (TOD), for networked control systems (NCS), and provide, for the rst time, an analytic proof of global exponential stability for both th...

During system and network overload periods, excessive delay or even data loss may occur. To maintain the quality of control of an NCS, the implementation system (including both computer and network) overload must be correctly handled. As we can see in the previous chapters, a common approach to dealing with this overload problem is to dynamically change the sampling period of the control loops....

BACKGROUND Health care-associated, central venous catheter-related bloodstream infections (HA-BSIs) are a major cause of morbidity and mortality. Needleless connectors (NCs) are an important component of the intravenous system. NCs initially were introduced to reduce health care worker needlestick injuries, yet some of these NCs may increase HA-BSI risk. METHODS We compared HA-BSI rates on wa...

In networked control systems (NCS), it is considered essential to design a robust controller such that the networked-system is stable against data dropouts during the network transfer. It has been shown that there is a critical data dropout rate over which the networkedsystem could be unstable; hence the desired task cannot be achieved. This paper shows that a desired task or trajectories can b...

orthologs identified in yeast, Drosophila, C. elegans, avian birds, rodents, and humans (Nef, 1996). Its amino acid sequence is 100% conserved among vertebrates and shows only 25% divergence with C. elegans or 28% with yeast (De Castro et al., 1995). NCS-1 is neuron Indeed, calmodulin-dependent targets such as 3Ј:5Ј-cyclic nucleotide phosphodiesterase, calcineurin, Japan 4 Howard Hughes Medical...

This paper studies decentralized event-triggering in networked control systems (NCSs), where all communication/computation tasks are executed asynchronously. A decentralized event-triggering scheme is proposed under this framework. We show that if the weighted sum of all minimal task periods and all types of delays is bounded, the resulting NCS is asymptotically stable. This condition suggests ...

The main problem of vehicle vibration comes from road roughness. An active suspension systempossesses the ability to reduce acceleration of sprung mass continuously as well as to minimizesuspension deflection, which results in improvement of tire grip with the road surface. Thus, braketraction control and vehicle maneuverability can be improved consider ably .This study developeda new active su...

Taking a network QoS designer’s point of view, this paper firstly reviews some of the recent advances on the NCS (Networked Control Systems) design then analyzes its requirements in terms of network QoS guarantees and its capacity to tolerate network performance variation. Current deterministic QoS design approach (including traffic schedulability analysis) may lead to network resource overprov...