Browsing Engineering (Faculty of) by Subject "Control"
Now showing items 1-15 of 15
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Control and Interfacing of Three Phase Grid Connected Photovoltaic Systems
(University of Waterloo, 2011-01-10)Solar power is considered a very promising source for electric power generation. The abundance of sunlight over a large area of the earth surface gives rise to several applications of photovoltaic systems. Electricity can ... -
Control Methods for Improving Tracking Accuracy and Disturbance Rejection in Ball Screw Feed Drives
(University of Waterloo, 2014-01-23)This thesis studies in detail the dynamics of ball screw feed drives and expands understanding of the factors that impose limitations on their performance. This knowledge is then used for developing control strategies that ... -
Control of Microstructure in Laser Additive Manufacturing
(University of Waterloo, 2014-09-22)Since its arrival in the late 1980’s, Laser Additive Manufacturing (LAM) has come a long way to establish itself as one of the most advanced versatile manufacturing technologies in the 21st century. LAM implies a novel ... -
Design and Metrology of a Precision XY Planar Stage
(University of Waterloo, 2010-02-19)In recent years, the manufacturing industry has seen an increase in demand for micro-components in biomedical, opto-mechatronics, and automotive applications. Traditional machine tools are no longer a viable solution to ... -
Design, Implementation and Control of a Magnetic Levitation Device
(University of Waterloo, 2008-05-06)Magnetic levitation technology has shown a great deal of promise for micromanipulation tasks. Due to the lack of mechanical contact, magnetic levitation systems are free of problems caused by friction, wear, sealing and ... -
H-Infinity Performance Limitations for Problems with Sensor Time Delays
(University of Waterloo, 2008-01-23)Motivated by ongoing research into automating radiotherapy, this thesis is concerned with linear feedback control and estimation problems where only a delayed output signal is measurable. Various discrete-time performance ... -
Hybrid Fuel Cell Vehicle Powertrain Development Considering Power Source Degradation
(University of Waterloo, 2009-01-23)Vehicle design and control is an attractive area of research in that it embodies a convergence of societal need, technical limitation, and emerging capability. Environmental, political, and monetary concerns are driving ... -
Integrated Trajectory-Tracking and Vibration Control of Kinematically-Constrained Warehousing Cable Robots
(University of Waterloo, 2018-05-04)With the explosion of e-commerce in recent years, there is a strong desire for automated material handling solutions including warehousing robots. Cable driven parallel robots (CDPRs) are a relatively new concept which has ... -
On the use of physical boundary conditions for two-phase flow simulations: Integration of control feedback
(Elsevier, 2018-10-04)The sensitivity of two-phase flow simulations using the Euler–Euler model on the inlet boundary conditions (BCs) is studied. Specifically, the physical relevance of Dirichlet uniform inlet velocity BCs is studied which are ... -
Path Following and Stabilization of an Autonomous Bicycle
(University of Waterloo, 2013-09-26)In this thesis we investigate the problem of designing a control system for a modern bicycle so that the bicycle is stable and follows a path. We propose a multi-loop control architecture, where each loop is systematically ... -
A PHENOMENOLOGICAL MODEL OF SHAPE MEMORY ALLOYS INCLUDING TIME-VARYING STRESS
(University of Waterloo, 2007-08-22)Shape memory alloys (SMAs) are metallic materials, which have two main stable crystalline phases: austenite, a high temperature phase and martensite, a low temperature phase. Austenite and martensite each have unique ... -
Precision Control of High Speed Drives using Active Vibration Damping
(University of Waterloo, 2010-09-02)In order to meet industry demands for improved productivity and part quality, machine tools must be equipped with faster and more accurate feed drives. Over the past two decades, research has focused on the development of ... -
Stabiity for Systems with Unknown Time Delays
(University of Waterloo, 2013-01-23)Time delays are of long-standing interest in the study of control systems since they appear in many practical control problems and tend to degrade overall system performance. In this thesis, we consider two distinct problems ... -
Surface Geometry and the Haptic Rendering of Rigid Point Contacts
(University of Waterloo, 2013-04-23)This thesis examines the haptic rendering of rigid point contacts in virtual simulations. The haptic renderers generate force feedback so that the operator can interact with the virtual scenes in a realistic way. They ... -
Systematic Design of Type-2 Fuzzy Logic Systems for Modeling and Control with Applications to Modular and Reconfigurable Robots
(University of Waterloo, 2010-07-20)Fuzzy logic systems (FLSs) are well known in the literature for their ability to model linguistics and system uncertainties. Due to this ability, FLSs have been successfully used in modeling and control applications such ...