Building on recent work in sensor networks and distributed manipulation, we propose Actuator Networks– networks of devices capable of exerting influence on their environment in addition to monitoring it. We show how an Actuator Network can be used to guide a moving element to a desired location in space through the creation of potential gradients, and introduce an algorithm capable of calculati...

mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. a failure of a sensor leads to loss of connectivity and may cause partitioning of the network into disjoint segments. a number of approaches have bee...

The packaging of microelectromechanical systems (MEMS) is complex and it is essential to the successful commercialization of many MEMS devices. In this paper, a pressure sensor and an actuator were assembled on a flexible substrate using FCOF technology. A photolithography process was developed to meet the solder bump fabrication requirement of the sensor chip. Eutectic solder bumps (63Sn/37Pb)...

In order to further expand the flight envelope of quadrotors under actuator failures, we design a nonlinear sensor-based fault-tolerant controller stabilize quadrotor with failure two opposing rotors in high-speed condition (>8 m/s). The incremental dynamic inversion approach which excels handling model uncertainties is adopted compensate for significant unknown aerodynamic effects. internal dy...

In this article, the issue of attitude control and active vibration suppression of a nonlinear flexible spacecraft is assessed through piezoelectric patches as actuator and sensors. Two controller loops are applied: the inner loop, to make the panel vibration damped through piezoelectric patches; and the outer loop, to perform spacecraft maneuver using the reaction wheel acting on the hub. An o...

WSANs (Wireless Sensor and Actuator Networks) are derived from traditional wireless sensor networks by introducing mobile actuator elements. Previous studies indicated that mobile actuators can improve network performance in terms of data collection, energy supplementation, etc. However, according to our experimental simulations, the actuator's mobility also causes the sensor worm to spread fas...

wireless sensor networks (wsns) consist of a large number of sensor nodes which are capable of sensing different environmental phenomena and sending the collected data to the base station or sink. since sensor nodes are made of cheap components and are deployed in remote and uncontrolled environments, they are prone to failure; thus, maintaining a network with its proper functions even when und...

In this paper, in order to increase the efficiency, to reduce the cost and to prevent the failures of wind turbines, which lead to an extensive break down, a robust fault diagnosis system is proposed for V47/660kW wind turbine operated in Manjil wind farm, Gilan province, Iran. According to the acquired data from Iran wind turbine industry, common faults of the wind turbine such as sensor fault...

This introductory chapter describes various applications, scenarios, and models of wireless sensor and actuator networks. Problems at the physical, medium access, network, and transport layers as well as various tools needed to enable their functioning are identified. Various assumptions and metrics used in simulations and protocol descriptions are discussed. The chapter then describes ways of ...

ion Type of Application Off-Network In-Network Services Awareness Optimization Optimization [34] Node services In-network No No √ [94] Jini Services Off-network No √ No [50] Web services Off-network No No No [118] Web services Off-network √ √ No [95] Node services In-network No No No [26] Node Web services In-network √ No No [38] Web services Off-network No No No [48] .NET components Off-networ...