We developed a networked virtual reality system on which one could have live videoes with high iteractive usage. However, since a client in our system receives both live videoes and computer graphics objects continuously from a server while it is rendering the current frame of the virtual world, a quality of the presentation of the virtual space depends on the current available system resources...

Distributed Networked Sensing and Control Systems: Robust Estimation and Real-time Control by Songhwai Oh Doctor of Philosophy in Engineering-Electrical Engineering and Computer Sciences University of California, Berkeley Professor Shankar Sastry, Chair There is a growing interest in distributed networked sensing and control systems, such as wireless sensor networks, networked control systems, ...

This paper presents an efficient and fault-tolerant distributed approach to monitoring the status of processors in a network. The Distributed System Monitor (DSMon) is a distributed, decentralized program that gathers processor information, such as CPU load, user information, and network and disk statistics, in parallel at each processor and reliably distributes the information on-line to all f...

The networked control system (NCS) design for continuoustime systems with probabilistic delays is discussed in this paper. The delay is assumed to follow a given probability density function. A design scheme for the observer-based output feedback controller is proposed to render the closedloop networked system exponentially mean-square stable with H∞ performance requirement. The design method i...

We discuss the use of agents and qualitative representations in networked robotic systems and describe cooperation between agents as a means of realizing functionality. We present this approach as an alternative to quantitative techniques. We describe our networked robotic system and show how agents can be constructed in that system. We discuss an example teleoperation task, where agent coopera...

In this paper, diagnosis of actuator/component faults for networked control systems (NCSs) with transfer delays is investigated. First, the linear NCSs with transfer delays are modelled by T-S discrete-time systems with input delays. Next, under certain conditions, a stable adaptive observer is designed for the purpose of fault diagnosis. An extension to a class of nonlinear systems is then mad...

In the last few years, robot teleoperation systems have been improved with the advances in computer networks, virtual reality and graphical user interfaces. However, teleoperation applications for multiple and different robots in networked virtual environments are not available for all kind of users. This paper presents a collaborative multiuser system for multiple simultaneous robot teleoperat...

The paper under discussion [12] presents the analytical results underlying the authors’ design of a networked control system (NCS) operating over a cellular network. Their formulation fits the common framework [7, 14], in which there are transmission delays present in the sensor/controller and controller/actuator paths. One key difference between this work and existing literature relates to the...

The random time delay in a networked control system can usually deteriorate the control performance and stability of the networked control system. In order to solve this problem, this paper puts forward a networked control system random time-delay compensation method based on time-delay prediction and improved implicit generalized predictive control (GPC). The least squares support vector machi...