Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1447-1466 of 1483
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Vacuum Brazing of Carbon Nanotube Strands
(University of Waterloo, 2009-08-28)Carbon nanotubes (CNTs) discovered at 1991 have attracted great interest for applications in Nano-Electro-Mechanical-Systems (NEMS). However, the search for methods to join CNTs with metallic parts has been a worldwide ... -
Variable-Structure Cable-Driven Parallel Robots
(University of Waterloo, 2022-05-16)Cable-driven parallel robots (CDPR) are a special class of robotic manipulators consisting of a rigid end effector suspended, constrained, and actuated by a number of length-varying cables. Since cable mass is typically ... -
Vehicle Battery Pack Design and Considerations for Repurposing
(University of Waterloo, 2015-09-28)The market for hybrid and electric vehicles is expanding with the rise of gas prices and desires to curb climate change. With the creation of these complex systems comes the development of advanced battery systems which ... -
Vehicle Dynamic and Control of Constrained Multi-Actuation Systems at the Limits of Handling
(University of Waterloo, 2021-03-17)With recent advances in electric vehicles, having electric motors directly driving the wheels is gaining attraction. When a vehicle is equipped with four independent electric hub motors or independently controlled brakes ... -
Vehicle Lateral and Longitudinal Velocity Estimation Using Machine Learning Algorithms
(University of Waterloo, 2022-01-17)Prediction and estimation of states are of great importance for vehicle control and safety. The conventional observers are designed and used vastly in the automotive industry to fulfill this objective. However, the vehicle ... -
Vehicle Stability Control Considering the Driver-in-the-Loop
(University of Waterloo, 2016-08-04)A driver‐in‐the‐loop modeling framework is essential for a full analysis of vehicle stability systems. In theory, knowing the vehicle’s desired path (driver’s intention), the problem is reduced to a standard control ... -
Velocity scaling of high-speed turbulent boundary layer flows with wall heat transfer
(University of Waterloo, 2021-07-19)The law of the wall has been a staple in collapsing the mean velocity profiles of seemingly very different turbulent channel and boundary layer flows into one single, semi-analytical function. Accordingly, it has equipped ... -
Vibration Control in Cable Robots Using a Multi-Axis Reaction System
(University of Waterloo, 2016-09-28)The primary motivation of this thesis is to develop a control strategy for eliminating persistent vibrations in all six spatial directions of the end effector of a planar cable-driven parallel robotic manipulator. By ... -
Virtual Model Building for Multi-Axis Machine Tools Using Field Data
(University of Waterloo, 2023-01-26)Accurate machine dynamic models are the foundation of many advanced machining technologies such as virtual process planning and machine condition monitoring. Viewing recent designs of modern high-performance machine tools, ... -
Virtual Model of Power Skiving Cutting Mechanics
(University of Waterloo, 2019-04-29)Power skiving is a high-speed gear cutting operation which involves feeding a rotating cutting tool into a synchronously rotating workpiece at an angled orientation, creating a continual chip removal cutting action. It is ... -
Viscoelastic-Viscoplastic Model to Predict Creep in a Random Chopped Mat Thermoplastic Composite
(University of Waterloo, 2008-12-19)Random glass-mat thermoplastic (GMT) composites are used in automotive applications due to their mechanical properties and low processing cost. However, there is an inherent issue in that the thermoplastic matrices exhibit ... -
Vision-based Driver State Monitoring Using Deep Learning
(University of Waterloo, 2022-01-20)Road accidents cause thousands of injuries and losses of lives every year, ranking among the top lifetime odds of death causes. More than 90% of the traffic accidents are caused by human errors [1], including sight ... -
Vision-based Self-Supervised Depth Perception and Motion Control for Mobile Robots
(University of Waterloo, 2022-07-18)The advances in robotics have enabled many different opportunities to deploy a mobile robot in various settings. However, many current mobile robots are equipped with a sensor suite with multiple types of sensors. This ... -
Visual-Inertial Odometry for 3D Pose Estimation and Scene Reconstruction using Unmanned Aerial Vehicles
(University of Waterloo, 2019-12-20)As Unmanned Aerial Vehicles (UAVs) become increasingly available, pose estimation remains critical for navigation. Pose estimation is also useful for scene reconstruction in certain surveillance applications, such as ... -
Visual-lidar Map Alignment for Change Detection in Infrastructure Applications
(University of Waterloo, 2023-11-22)Current human-based infrastructure inspections face several problems. Firstly, human inspectors face safety risks working in hazardous environments and reaching challenging areas in order to inspect an infrastructure asset ... -
Vital Energy Regulator: A Time-Independent Solution for Control of Lower Limb Exoskeletons
(IEEE, 2021-10)In this letter, we introduce a novel control strategy called Virtual Energy Regulator (VER) for lower limb rehabilitation exoskeletons. Unlike the conventional trajectory tracking controllers, VER, which is a time-independent ... -
Vortex break-down during the impact of a starting subsonic compressible gas jet on a multi-plume spray
(Springer, 2016-11-01)The impact process and the consequent two-phase interaction for a compressible subsonic starting gas jet colliding on a multi-plume spray are investigated using large eddy simulation with Eulerian/Lagrangian multiphase ... -
The Vortex Dynamics of Laminar Separation Bubbles
(University of Waterloo, 2021-01-15)Laminar separation bubbles (LSBs) are common features in low Reynolds number flows, and can have considerable performance impacts in applications such as hydrofoils, small-to-medium scale wind turbines, micro and unmanned ... -
Vortex Dynamics within the Laminar Separation Bubble over a NACA 0018 Airfoil at Low Reynolds Numbers
(University of Waterloo, 2015-11-02)The structures formed in the separated shear layer within a Laminar Separation Bubble (LSB) over a NACA 0018 airfoil at a chord Reynolds number of 100,000 and Angles of Attack (AOA) of (5°, 8°, and 10°) were investigated. ... -
Vortex-induced vibrations of a pivoted circular cylinder and their control using a tuned-mass damper
(University of Waterloo, 2011-05-19)Vortex-induced vibrations of a pivoted circular cylinder and control of these vibrations were investigated experimentally. A novel experimental setup was employed to reproduce orbiting response observed in some engineering ...