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 39 for “"system robustness"”.
-
Speech recognition system robustness to microphone variations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
-
Practical Optimisation of District Energy Systems: Representation of Technology Characteristics, Demand Uncertainty, and System Robustness
District energy systems are an alternative to conventional national-scale networks to meet demand in urban areas. Decentralising electricity production reduces distribution losses, while centralising thermal energy production capitalises on economies of scale. Furthermore, geographic proximity …
-
Uncertainty and sensitivity analysis methods for improving design robustness and reliability
Engineering systems of the modern day are increasingly complex, often involving numerous components, countless mathematical models, and large, globally-distributed design teams. These features all contribute uncertainty to the system design process that, if not properly managed, can escalate into …
-
Stability and robustness of adaptive controllers for underactuated Lagrangian systems and robotic networks
This dissertation studies the stability and robustness of an adaptive control framework for underactuated Lagrangian systems and robotic networks. In particular, an adaptive control framework is designed for a manipulator, which operates on an underactuated dynamic platform. The framework promotes …
-
Design and Implementation of Intelligent Guidance Algorithms for UAV Mission Protection
… years, the interest of investigating intelligent systems for Unmanned Aerial Vehicles (UAVs) have increased in popularity due to their large range of capabilities such as on-line obstacle avoidance, autonomy, search and rescue, fast prototyping and integration in the National Air Space (NAS). Many …
-
A novel method for power system stabilizer design
Power system stability is defined as the condition of a power system that enables it to remain in a state of operating equilibrium under normal operating conditions and to regain an acceptable state of equilibrium after being subjected to a finite disturbance. In the evaluation of stability, the …
-
Sensitivity Constrained Nonlinear Programming: A General Approach for Planning and Design Under Parameter Uncertainty and an Application to Treatment Plant Design
… models, to include functions that depend on the system sensitivity to changes in parameter values. Such sensitivity-based functions include first-order measures of variance, reliability, and robustness. Thus SCNLP can be used to generate solutions or designs that are good with respect to modeled …
-
Material and fabrication developments in the ion-electrospray propulsion system
… in support of the ion electrospray propulsion system (iEPS) developed by MIT's Space Propulsion Lab. MEMS fabrication techniques are reworked to increase yield reliability of the thruster frames. The focus of this work is on propellant management, increasing thrust density, system robustness, …
-
Intelligent Monitoring of Powerline Vibrations - Sparse Sensing and Predictive Modeling Approach
… and particle filters for reconstructing full-system states from sparse observations. A pivoted QR decomposition method is employed to determine optimal sensor placement, ensuring efficient coverage and accurate reconstruction with minimal hardware. Additionally, compressive sensing is …
-
Pedestrian detection and tracking for mobility on demand
… presents a pedestrian detection and tracking system to be used aboard mobility on demand systems. Mobility on demand is a transportation paradigm in which a fleet of vehicles is shared among a community, with rides provided upon request. The proposed system is capable of robustly gathering …
-
Implementation and evaluation of an intelligent tuner for an ill-defined servo-motor system
… can perform unsatisfactorily when the controlled system is complex and incompletely known. Furthermore, they cannot directly capture and utilize the knowledge of experienced human operators, in tuning a servo system. The tuning technique developed and implemented in this work can overcome these …
-
A hybrid frequency modulated CDMA communication system
… the past decade. Numerous cellular communication systems have been developed to meet this need. In North America, AMPS, IS-54, 1S-95 and GSM are the most popular cellular systems ruling the market. In developing nations, Wireless Local Loop (WLL) services will be in great demand in the coming …
-
Artificial Intelligence-Assisted Inertial Geomagnetic Passive Navigation
… of machine learning techniques into navigation systems has garnered significant interest due to their potential to improve estimation accuracy and system robustness. This doctoral dissertation investigates the use of Deep Learning combined with a Rao-Blackwellized Particle Filter for enhancing …
-
Axiomatic system design : chemical mechanical polishing machine case study
… as a design methodology for large or complex system design. Particular considerations of system design are described and the suitability of axiomatic design for such considerations is discussed. Then, tools to enable successful application of axiomatic design to systems are developed. The …
-
Trust Management in the Internet of Things
… improves trust accuracy, attack detection, and system robustness, while TARA achieves better user satisfaction and system efficiency.
-
Explanation-Based Feature Construction
… and approximate, can be utilized by the learning system. Robustness is achieved by incorporating this prior knowledge in a task-specific manner, guided by the actual training examples. These goals are realized with Explanation-Based Learning (EBL). The EBL paradigm provides the necessary bridge …
-
A Study of Remote Area Internet Access with Embedded Power Generation
… then looks at the design of a small-scale power system for a remote location where grid power is unavailable or unreliable. The methodology takes into account locally available energy resources, technical and economic parameters of each power generating technology, and the trade-off among …
-
Evolutionary environmental modelling in self-managing software systems
… richness and sophistication of modem software systems has challenged conventional design-time software modelling analysis and has led to a number of studies exploring non-conventional approaches particularly those inspired by nature. The natural world routinely produces organisms that can not …
-
Modeling the Sit-to-Stand Transition using Koopman Lifting Linearization and Human State Estimation
… modeled as a lifted linear feedback control system, composed of an SMP-Koopman-based open-loop biomechanical model of the human body and a linear quadratic regulator (LQR) which guides the body to stand up. The LQR controller, tuned to replicate STS motion, guides the human body model through …
-
A system-theoretic approach to global and local regulation in neuron morphologies
… overall behavior of neurons. This is done using system-theoretic tools and feedback control. We first formulate a biophysical closed loop model of synaptic scaling. We then study how synaptic scaling affect neurons’ behavior in both abstract and reconstructed morphologies. This study reveals …
Page 1 of 2