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 119 for “"sensors and actuators"”.
-
Developing Nucleic Acid-Based Sensors and Actuators
… are attractive molecules for designing sense-and-respond modules: they are ubiquitous, information-rich and interact with each other through simple rules. Here, through two examples, I show that nucleic acids are particularly suited to create programmable molecular tools, in which inputs and …
-
Structural Health Monitoring Using Multiple Piezoelectric Sensors and Actuators
… at the Center for Intelligent Material Systems and Structures. It has been successfully implemented on several complex structures to detect incipient-type damage such as small cracks or loose connections. However, there are still some problems to be solved before full scale development and …
-
Broadband active structural control using collocated piezoelectric sensors and actuators
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
-
Non-Linear Robust Observers For Systems With Non-Collocated Sensors And Actuators
… are tolerant to significant modeling imprecision and external disturbances. Additional challenges stem from the implementation of the control algorithm such as the availability of the state variables needed for the computation of the control signals, and the adverse effects induced by …
-
Robust agent control of an autonomous robot with many sensors and actuators
… of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
-
Design and Fabrication of Piezoelectric Sensors and Actuators for Characterization of Soft Materials
… measurement technology for the analysis and characterization of soft materials that serve as feedstocks (inputs) and products (outputs) of emerging biomanufacturing processes, including cell and additive biomanufacturing processes. The first objective was to define measurement challenges …
-
Development of resource-constrained sensors and actuators for in-space satellite docking and servicing
… assets will be an economically desirable (and often scientifically necessary) capability in future space enterprises. With the right set of tools and technologies, satellites will be able to autonomously refuel, repair, or replace each other. This has the potential to extend mission …
-
Flexible, stretchable, biointegrated arrays of electronic thermal sensors and actuators for advancements in clinical medicine
… such as blood flow changes, stress, infection and thermoregulation. However, technologies to-date have either been hindered by a high sensitivity to motion artifacts, or have been too bulky and intrusive to be viable for ubiquitous, continuous use outside of a clinic. In addition to mechanical …
-
Fundamental design principles of novel MEMS based "Landau" switches, sensors, and actuators : Role of electrode geometry and operation regime
… systems (MEMS) are considered as potential candidates for "More-Moore" and "More-than-Moore" applications due to their versatile use as sensors, switches, and actuators. Examples include accelerometers for sensing, RF-MEMS capacitive switches in communication, suspended-gate (SG) FETs in …
-
An architecture for intelligent health assessment enabled IEEE 1451 compliant smart sensors
<p>As systems become increasingly complex and costly, potential failure mechanisms and indicators are numerous and difficult to identify, while the cost of loss is very expensive - human lives, replacement units, and impacts to national security. In order to ensure the safety and long-term …
-
Micro-Moving Target IPv6 Defense for 6LoWPAN and the Internet of Things
… of Things (IoT) is composed of billions of sensors and actuators that have varying tasks aimed at making industry, healthcare, and home life more efficient. These sensors and actuators are mainly low-powered and resource-constrained embedded devices with little room for implementing IP …
-
Design of ultra precision fixtures for nano-manufacturing
… presents the design, modeling, fabrication and experimental validation of an active precision fixturing system called the Hybrid Positioning Fixture (HPF). The HPF uses the principles of exact constraint, combined with principles and means of Nanomanipulation to fixture components with tens …
-
Direct Measurements of Polyelectrolyte Brush Responses using Atomic Force and Optical Microscopy
… are addressed. The focus is on the investigation and understanding of the response properties of these polymer surfaces. For that purpose new methods are developed which combine force spectroscopy and optical microscopy. As well, established physico-chemical techniques are used. Polymer brushes …
-
Vibration Attenuation of Composite Moving Beams using Active Vibration Control Techniques
… employs the piezoelectric effect. Piezoelectric sensors and actuators are added to the beam to sense and control the vibrational response of the moving beam. The sensors and actuators are made to communicate with each other using negative velocity feedback control. Classical laminate plate theory …
-
Decentralised protocol-independent automation in smart buildings
Providing automation and reacting in time are primary functions of a modern smart building. That is done thanks to sensors and actuators distributed across the architecture. Smart building devices employ a diverse set of communication protocols, and the number of such devices grows every year. A …
-
Design and implementation of a relief interface
… However, these objects are commonly static handles, with limited capabilities to present changing information through their form. This thesis presents a human-computer interface able to generate physical 3D shapes and sense user input through them. It consists of an array of sensors and …
-
Reliable Decentralized Controller Design for Discrete/continuous-Time, Sampled-Data, and Multirate Systems
… are robust to failures from a preselected set of sensors or actuators for both centralized and decentralized systems. The designs guarantee stability and an $H\sb\infty$-norm bound on the closed-loop system despite failures in any subset of that preselected set of sensors or actuators. The …
-
Experimental investigation and modeling of the electrostrictive relaxor ferroelectric lead magnesium niobate-lead titinate
… to the design of intelligent material systems and structures are the realization of attributes of the constitutive transducer materials—the sensors and actuators—and the ability to model the characteristics of these transducers. In this thesis, electromechanical behaviors of the …
Page 1 of 6