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Filtering by: Creator McNeel, Ross E. Remove constraint Creator: McNeel, Ross E. Committee Member Hatton, Ross Remove constraint Committee Member: Hatton, Ross

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  • An approach to reduced-order modeling and feedback control for wave energy converters

    Creator:
    Shoori J., Hesam E.
    Abstract:
    Wave energy holds great promise to be part of the alternative energy portfolio that will provide independence from fossil fuels. As wave energy converter (WEC) technologies mature, designing effective control strategies to extract maximum energy, extend device life, coordinate WEC operation within an array, or mitigate negative impacts of a...
    Resource Type:
    Masters Thesis
    Full Text:
    Control For Wave Energy Converters AN ABSTRACT OF THE THESIS OF Hesam E. Shoori J. for the degree of

  • Design of a Biomass Feeding Robot for Controlled Cookstove Testing

    Creator:
    O'Boyle, Duncan
    Abstract:
    The purpose of this report is to detail the design and validation of a prototype robot that feeds biomass into a range of small household cookstoves at a programmable rate. Improved design and testing methods for the development of improved biomass cookstoves are needed to design stoves that alleviate the...
    Resource Type:
    Honors College Thesis
    Full Text:
    . Key Words: Cookstove Testing, Robotics, Mechanical Engineering Design, Prototype Corresponding e

  • Robotic deburring

    Creator:
    James, Francis
    Abstract:
    Deburring of machined parts is a crucial task in the aerospace and automotive industry. This process is still performed manually to a large extent due to the unpredictability of burr formation as well as the complex interactions between the human arm and the workpiece. Poor ergonomics, repetitive stress and strain...
    Resource Type:
    Masters Thesis
    Full Text:
    0.4 0.6 0.8 1 Parametrized Distance 0.5 1 1.5 2 2.5 3 3.5 4 F o rc e (N ) Average Forces

  • Modeling, simulation, and analysis of two hydraulic power take-off systems for wave energy conversion

    Creator:
    Casey, Sean (Sean Michael)
    Abstract:
    Hydraulic power take-off (PTO) systems have been implemented in several wave energy converter (WEC) designs in recent years. Two popular hydraulic PTO configurations coupled to a point absorber hydrodynamic model are simulated in waves representative of an energetic sea state likely to be found in deep waters off the coast...
    Resource Type:
    Masters Thesis
    Full Text:
    you to Dr. Ross Hatton and Dr. Ted Brekken for sitting on my committee and providing direction along

  • Geometric Chatter Stability Index for Milling and Modeling of Chip Pulling Effect

    Creator:
    Maulimov, Mukhtar
    Abstract:
    Prediction and mitigation of chatter vibrations in machining operations and optimizing overall machining mechanics are crucial for achieving greater productivity and manufacturing efficiency. This thesis first explores effect of directional relationships on chatter stability in milling process. Based on the directional relationships, a geometry-based chatter stability index (CSI) is proposed...
    Resource Type:
    Masters Thesis
    Full Text:
    ( ) 1 ( ) 2 i T t i F i aK A e i F i           (2.13) where T is the phase

  • Interconnection Networks Based on Gaussian and Eisenstein-Jacobi Integers

    Creator:
    Shamaei, Arash
    Abstract:
    Quotient rings of Gaussian and Eisenstein-Jacobi(EJ) integers can be deployed to construct interconnection networks with good topological properties. In this thesis, we propose deadlock-free deterministic and partially adaptive routing algo­rithms for hexagonal networks, one special class of EJ networks. Then we discuss higher dimensional Gaussian networks as an alternative to...
    Resource Type:
    Dissertation
    Full Text:
    successfully. Special thanks go to my committee, Dr. Ben Lee , Dr. Lizhong Chen , and Dr. Ross Hatton for

  • Grasping complex casting shapes with an underactuated parallel jaw gripper on an industrial robot

    Creator:
    Carpenter, Ryan Joseph
    Abstract:
    Steel foundries are in great need of automation as current operations involve many hazardous manual tasks. Automating foundry operations is very challenging due to the variety of tasks that must be performed on physical objects that vary significantly in size, shape, and weight. This thesis focuses on robotically automating the...
    Resource Type:
    Masters Thesis
    Full Text:
    field and guiding this project to meaningful results. I would also like to thank Ross Hatton for his

  • Shocks and Awe : Damping Selection in Racecars to Maximize Grip

    Creator:
    Takaro, Trevor M. F.
    Abstract:
    This thesis covers the use of a quarter car model to select damping rates for aFormula Student (FS) car, focusing on minimizing vertical tire force variation to improvegrip. A 2 degree of freedom (DOF) quarter car model is cycled over the road frequenciesof interest and the results compared with the...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 E APPENDIX E Round 1 Test day photos

  • A shared-autonomy heavy-lift assistive robot for manufacturing

    Creator:
    Finley, Taylor M.
    Abstract:
    Automating pick-and-place operations for large steel castings in a foundry is challenging, particularly from a perception point of view. Accurately estimating the identity and orientation of a given part is an open and complex problem, especially if that part sits in a bin of very similar parts. The problem is...
    Resource Type:
    Masters Thesis

  • Active and Passive Control of Machine Tool Vibrations for High Speed and Accuracy

    Creator:
    Dumanli, Ahmet Alper
    Abstract:
    High-performance mechatronic systems are widely used in precision manufacturing equipment such as CNC machine tools, 3D-Printers, photolithography systems, industrial robots, and Coordinate Measuring Machines (CMMs). These equipment are utilized in producing parts and components for aviation, semiconductor, optics, and many other emerging industries, with geometric features and surface properties within...
    Resource Type:
    Dissertation
    Full Text:
    minimize( ), where: Re( ) Im( )l k l k s t M N M N j t j t k k l k l k J J e s e s

  • From running birds to walking robots : optimization as a unifying framework for dynamic bipedal locomotion

    Creator:
    Hubicki, Christian M.
    Abstract:
    Bipedal locomotion is a complex phenomenon to understand and control, making it difficult for legged robots to achieve the speed, agility, efficiency, and robustness of their animal counterparts. This thesis argues for the use of numerical optimization to investigate and implement bipedal control as it applies to biology, dynamical models,...
    Resource Type:
    Dissertation
    Full Text:
    [120] (d) final prototype mono- pod (used for experiments in sections 4.4.2.4 and 4.4.3.3) (e) ATRIAS

  • Approximation Schemes in Planar Graphs

    Creator:
    Zheng, Baigong
    Abstract:
    There are growing interests in designing polynomial-time approximation schemes (PTAS) for optimization problems in planar graphs. Many NP-hard problems are shown to admit PTAS in planar graphs in the last decade, including Steiner tree, Steiner forest, two- edge-connected subgraphs and so on. We follow this research line and study several...
    Resource Type:
    Dissertation
    Full Text:
    planar graphs. P stands for PTAS and E stands for EPTAS. U stands for “unweighted version of the problem

  • CLEAN learning to improve coordination and scalability in multiagent systems

    Creator:
    HolmesParker, Chris
    Abstract:
    Recent advances in multiagent learning have led to exciting new capabilities spanning fields as diverse as planetary exploration, air traffic control, military reconnaissance, and airport security. Such algorithms provide a tangible benefit over traditional control algorithms in that they allow fast responses, adapt to dynamic environments, and generally scale well....
    Resource Type:
    Dissertation
    Full Text:
    . Belinda Batten, Dr. Ross Hatton, Dr. Jonathan Hurst, Dr. Ravi Balasubramanian, and Dr. Richard Nafshun

  • Functional Materials and Techniques for Additive Manufacturing in Soft Robotics

    Creator:
    Walker, Stephanie
    Abstract:
    This thesis outlines the development of new elastomeric materials and manufacturing processes for soft robotics. Specifically, this work describes the development of custom material formulations for use in additive manufacturing, additive manufacturing processing techniques for silicone elastomers, and multi-component additive manufacturing techniques. Material synthesis and processing is a gap in...
    Resource Type:
    Dissertation
    Full Text:
    . Ross Hatton, and Dr. Oksana Ostroverkhova. CONTRIBUTION OF AUTHORS Chapter

  • Dynamics and control for spring-mass legged robots

    Creator:
    Vejdani Noghreiyan, Hamid Reza
    Abstract:
    The objective of this study is to propose control strategies for legged robots to walk and run naturally like humans and animals. To achieve this goal, we use the spring-mass model for the legged robots to be able to create the same dynamics in the leg as humans and animals....
    Resource Type:
    Dissertation
    Full Text:
    [2], d) ATRIAS 2.0 and e)ATRIAS 2.1 [1] . 15 2.4 Definition of vertical leg orientation (VLO) and

  • Realizable Path Planning and Execution for Robotic Systems

    Creator:
    Jones, Dylan A.
    Abstract:
    Performing autonomous robotic tasks in the field, such as ocean monitoring and aerial surveillance, requires planning and executing paths in dynamic environments. In these uncertain and changing environments, it is not uncommon to see a large difference between the path planned by the robotic vehicle and the path that the...
    Resource Type:
    Dissertation
    Full Text:
    , Kagan Tumer, and Ross Hatton for their feedback throughout my time at Oregon State. Next, I have to

  • Theoretical and implementation improvements for difference evaluation functions

    Creator:
    Colby, Mitchell Kataichi
    Abstract:
    Multiagent learning with cooperative coevolutionary algorithms is a critical area of research, and is relevant to many real-world applications including air traffic control, distributed sensor network control, and game-theoretic applications such as border patrol. A key difficulty in multiagent learning is the credit assignment problem, where the impact of each...
    Resource Type:
    Dissertation