Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1125-1144 of 1504
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On the Manifold: Representing Geometry in C++ for State Estimation
(University of Waterloo, 2018-12-19)Manipulating geometric objects is central to state estimation problems in robotics. Typical algorithms must optimize over non-Euclidean states, such as rigid transformations on the SE(3) manifold, and handle measurements ... -
On the measurement of relative powder-bed compaction density in powder-bed additive manufacturing processes
(Elsevier, 2018-10-05)Experimental studies in the literature have identified the powder-bed compaction density as an important parameter, governing the quality of additively manufactured parts. For example, in laser powder-bed fusion (LPBF), ... -
On the planar flow development and structural loading of cylinders with circular fins in cross-flow
(University of Waterloo, 2015-05-14)Finned cylinders are commonly encountered in the design of heat exchangers. Critical to the design and performance of a heat exchanger are the mean and fluctuating loading on the tubes, as they relate to pressure losses ... -
On the Potential Use of Small Scale Fire Tests for Screening Steiner Tunnel Results for Spray Foam Insulation
(University of Waterloo, 2013-05-21)The goal of this study is to assess the potential of using bench-scale fire testing to screen materials for the Steiner tunnel fire test. It is hypothesized that the chemical and physical changes made to a material to ... -
On the Response of 7000-Series Alloys to Hot Stamping
(University of Waterloo, 2020-01-07)Hot stamping, or die quenching (DQ), of 7000-series aluminum alloys is a metal forming process in which a blank is heated (solutionized) and then quenched and formed in cold tooling. The formed part is then subjected ... -
One-dimensional titanium dioxide nanomaterial based memristive device and its neuromorphic computing applications
(University of Waterloo, 2019-08-13)Memristor devices as the alternative to the next-generation non-volatile memory devices has been widely studied recently due to its advantages of simple structure, fast switching speed, low power consumption. Among all the ... -
Operational Design Domain Monitoring and Augmentation for Autonomous Driving
(University of Waterloo, 2022-12-19)Recent technological advances in Autonomous Driving Systems (ADS) show promise in increasing traffic safety. One of the critical challenges in developing ADS with higher levels of driving automation is to derive safety ... -
Operator Impedance During Physical Human-Robot Interaction: Estimation and Validation
(University of Waterloo, 2019-09-20)As the frequency and complexity of physical human-robot interaction (pHRI) increases, so does the need to understand the dynamics of this coupled system in real-time. For haptic displays, which provide information to our ... -
Optical Sensor for Measurement of Clad Height during Laser Cladding Process
(University of Waterloo, 2006)The process of laser cladding consists of depositing successive layers of molten metallic powder to create a near-net shape. A high-power laser is used to melt incoming metallic powder, which forms a melt pool on the ... -
Optimal Active Control of Flexible Structures Applying Piezoelectric Actuators
(University of Waterloo, 2013-04-26)Piezoelectric actuators have proven to be useful in suppressing disturbances and shape control of flexible structures. Large space structures such as solar arrays are susceptible to large amplitude vibrations while in ... -
Optimal Anti-Idling Systems for Service Vehicles
(University of Waterloo, 2016-08-25)Vehicles are major sources of air pollution and greenhouse gas emissions, so any improvement in their fuel efficiency can have a significant impact on the environment and economy. In this study, a regenerative auxiliary ... -
Optimal Control of Li-Ion Hydrogen Fuel Cell Hybrid Vehicles
(University of Waterloo, 2012-09-26)Hydrogen fuel cells are poised to become the next major power generation technology for the automotive industry. Fuel cell hybrid vehicles have similar power trains to conventional series hybrid electric vehicles. The ... -
Optimal energy-efficient predictive controllers in automotive air-conditioning/refrigeration systems
(Elsevier, 2016-12-15)This paper presents several robust model predictive controllers that improve the temperature performance and minimize energy consumption in an automotive air-conditioning/refrigeration (A/C-R) system with a three-speed and ... -
Optimal Material Selection for Transducers
(University of Waterloo, 2018-02-15)When selecting an active material for an application, it is tempting to rely upon prior knowledge or commercial products that fit the design criteria. While this method is time effective, it does not provide an optimal ... -
Optimal Reconfiguration of Complex Production Lines for Profit Maximization via Simulation Modeling
(University of Waterloo, 2014-11-21)With the recent trend of re-shoring, transferring manufacturing systems from a workforce-intensive to a capital-intensive production environment becomes more common. One challenge multinational manufacturing companies may ... -
Optimal Sensor Configuration and Fault-Tolerant Estimation of Vehicle States
(SAE International, 2013-04-08)This paper discusses observability of the vehicle states using different sensor configurations as well as fault-tolerant estimation of these states. The optimality of the sensor configurations is assessed through different ... -
Optimal Torque Control for an Electric-Drive Vehicle with In-Wheel Motors: Implementation and Experiments
(SAE International, 2013-04-08)This paper presents the implementation of an off-line optimized torque vectoring controller on an electric-drive vehicle with four in-wheel motors for driver assistance and handling performance enhancement. The controller ... -
Optimal Vibration Control in Structures using Level set Technique
(University of Waterloo, 2013-09-27)Vibration control is inevitable in many fields, including mechanical and civil engineering. This matter becomes more crucial for lightweight systems, like those made of magnesium. One of the most commonly practiced methods ... -
Optimization of Forged Magnesium Structural Automotive Components
(University of Waterloo, 2016-08-25)In an ongoing search for better vehicle fuel economy, the automotive industry has put significant emphasis on the reduction of vehicle weight while retaining stringent safety, quality and performance standards. With its ... -
Optimization of Heat Sinks with Flow Bypass Using Entropy Generation Minimization
(University of Waterloo, 2006)Forced air cooling of electronic packages is enhanced through the use of extended surfaces or heat sinks that reduce boundary resistance allowing heat generating devices to operate at lower temperatures, thereby improving ...