Sensor-actuator networks require sharing of actuators across multiple applications. Here, simple device arbitration is not enough because actuators have lasting (or irreversible) effects on their environment. For example, actuating a heater not only affects the internal program state of the controlling application, but the nearby temperature as well. This change in external environment often ha...

Modern aircraft flight control relies on a complex network of interacting systems. These systems are safety critical systems, since a failure could have catastrophic consequences. It is therefore necessary to detect and isolate faults in aircraft control system components such as actuators or sensors before the fault is allowed to cause a system failure. Such detection and isolation could poten...

This work presents the design and implementation of a wireless home monitoring and automation system consisting of wireless sensor/actuator nodes, wireless camera, and a home server. The low-cost wireless sensor/actuator node features temperature, light intensity and motion sensors, and actuator driver circuits for the control of motors, heaters, and lights. Server and client programs used to m...

Robotic systems are capable of complex behavior by sequencing simpler skills called primitives (Voyles, Morrow, & Khosla 1997). A primitive is a sensor/actuator mapping robust enough to perform appropriately in various situations. Programming one primitive can be tedious and requires an accurate translation of human knowledge to machine code. Once a sufficient set of primitives is coded, the us...

For a class of uncertain continuously networked Lurie control systems with both sensor-to-controller time-delay and controller-to-actuator time-delay, the problem codesigning its observer fault-tolerant controller based on an event-triggered mechanism under actuator failure is investigated. Firstly, considering that state system cannot be measured directly, constructed node. Secondly, to reduce...

In the Web of Things (WoT), special communication networks composed of sensor nodes, actuator nodes and service nodes form the basis for new types of web application systems, which are directly connected to the real world via sensors and actuators. We propose a conceptual framework for simulating WoT systems as multi-agent systems where both sensor nodes, actuator nodes and service nodes, as we...

This paper investigates the control problem of distributed parameter systems (DPS) with time-varying delay by employing mobile actuator-sensor networks. It is assumed that each agent in the networks has a sensor device which can measure spatial state, and an actuator device that can dispense control signals to spatially distributed process and can communicate with its neighbors. To better contr...

In this paper, we concentrate on component adaptation in sensor-actuator networks. Component adaptation is the process of dynamically replacing components in an application in response to changes in the environment conditions. Since the normal operation of a sensor-actuator network is often hindered by faults (e.g., node failures, message losses, synchronization errors), it is important that th...

A robust control allocation scheme is developed for rigid spacecraft attitude stabilization in the presence of actuator partial loss fault, actuator failure, and actuator misalignment. First, a neural network fault detection scheme is proposed, Second, an adaptive attitude tracking strategy is employed which can realize fault tolerance control under the actuator partial loss and actuator failur...