Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 32 for “"Sensor-Actuator"”.
-
Service-Oriented Sensor-Actuator Networks
In this dissertation, we propose service-oriented sensor-actuator networks (SOSANETs) as a new paradigm for building the next generation of customizable, open, interoperable sensor-actuator networks. In SOSANETs, nodes expose their capabilities to applications in the form of service profiles. A …
-
A framework for reliable and dynamic wireless sensor-actuator networks
… of well-trained care personal. Wireless sensor-actuator networks have the potential to support care personal. Nodes worn by patients may supervise individually critical vital parameters and trigger an alarm if a critical value is reached. Medical help can be provided earlier lowering the …
-
Real-Time Wireless Sensor-Actuator Networks for Cyber-Physical Systems
… networking, and physical elements. Wireless sensor-actuator networks provide a new communication technology for a broad range of CPS applications such as process control, smart manufacturing, and data center management. Sensing and control in these systems need to meet stringent real-time …
-
Real-Time and Energy-Efficient Routing for Industrial Wireless Sensor-Actuator Networks
… process industries are adopting Wireless Sensor-Actuator Networks (WSANs) that enable sensors and actuators to communicate through low-power wireless mesh networks. Industrial monitoring and control applications require real-time communication among sensors, controllers and actuators …
-
Optimal sensor placement
… thesis we explore the problem of finding optimal sensor/actuator locations to achieve the minimum square error/least effort. The solution for the optimal sensor/actuator is often combinational, this means in order to solve for the solution we have to look at many parameters in the system and those …
-
Strain transducers for active control
… using velocity feedback with piezoceramic actuator(s) and closely located velocity sensor(s). The first part of the thesis presents modeling and design studies for a square piezoceramic actuator used to implement a single channel velocity feedback control with a velocity sensor at its …
-
Stability and Performance of Propulsion Control Systems with Distributed Control Architectures and Failures
… on a distributed architecture, in which, the sensors and actuators will be connected to the Full Authority Digital Engine Control (FADEC) through an engine area network. Distributed engine control architecture will allow the implementation of advanced, active control techniques along with …
-
Development and experimental validation of direct controller tuning for spaceborne telescopes
… an analysis algorithm that quantifies each sensor/actuator combination's effectiveness for control, and a design engine which tunes a baseline controller to improve performance and/or stability robustness. The sensor/actuator effectiveness indexing tool requires a reduced-order state-space …
-
Towards Cyber-Physical Security for Additively Manufactured Parts via In Situ Monitoring and Electromechanical Impedance
… part identification via a low-cost piezoelectric sensor-actuator able to record a part frequency response that is dependent on the geometry and material properties of the part as a whole, (3) an exploration of part-to-part variation across AM processes, again measured via a piezoelectric …
-
The use of transfer function methods in the feedback control of distributed parameter systems
… modal analysis. In most of these designs, the sensor signal must be processed to separate out the contributions from each mode so that it may be sent to the appropriate actuators. The analysis presented here, on the other hand, obtains exact solutions for a selected set of sensor and actuator …
-
Developing a disturbance source characterization technique for small satellite applications
… centers on the operation of distributed sensors, and we present a set of components capable of performing a characterization effort of this nature. Our implementation of supervised learning enables us to predict actuator operational frequency values based on accelerometer readings. The …
-
Dynamics and Control of Smart Structures for Space Applications
… manipulator with a collocated piezoelectric sensor/actuator pair for active vibration control, and a piezoelectric nanopositioner for control of instrumentation. Shape memory alloys are used to control the surface flatness of a prototype membrane structure. As these actuators exhibit a …
-
State Estimation for Distributed and Hybrid Systems
… The first part also contains an example of a sensor-actuator network, where a mobile robot navigates using both local sensors and information from a sensor network. This system was implemented using a component-based framework. The second part develops, a recursive joint maximum a posteriori …
-
Baseline-Free and Self-Powered Structural Health Monitoring
… technique that involves placing intelligent sensors on a structure, periodically recording data from the sensors, and using statistical methods to analyze the data in order to assess the condition of the structure. This work focuses on improving two areas of SHM; baseline management and …
-
Cyber-Physical Co-Design of Wireless Control Systems
<p>Wireless sensor-actuator network (WSAN) technology is gaining rapid adoption in process industries because of its advantages in lowering deployment and maintenance cost in challenging environments. While early success of industrial WSANs has been recognized, significant potential remains in …
-
Design of Distributed Controllers Over Heterogeneous Networks
… topologies in communication networks and sensor/actuator failures. Examples and applications are provided to demonstrate the efficiency of the algorithms proposed in the dissertation. Future research directions are also provided.
-
Decentralized thermal control of building systems
… are large scale complex systems, susceptible to sensor, actuator or communication network failures in their thermal control infrastructure, that can affect their performance in terms of occupant comfort and energy efficiency. The degree of decentralization in the control architecture determines a …
-
Resource-Constrained Embedded Control and Computing Systems
… resource constraints associated with wireless sensor/actuator networks.
-
Dual reality : an emerging medium
… of low-power radios, a rich set of sensors, longer-lasting batteries, and feature-rich microcontrollers has prompted significant research efforts to imbue physical environments with the responsiveness and awareness afforded by ubiquitous, unobtrusive, low-maintenance sensor networks. …
-
Active control of interior noise using piezoelectric actuators in a large-scale composite fuselage model
… The control inputs are due to piezoelectric actuators bonded to the cylinder wall while error information from the interior acoustic field is sensed by microphones. A preliminary analytical development was conducted to investigate the mechanisms of the structural/acoustic coupling exhibited …
Page 1 of 2