• Chatter detection and prevention in high-speed milling 

    Kennedy, Joseph L. (University of Missouri--Columbia, 2011)
    In this work, two separate mathematical models, a traditional and new model, are presented for an end-milling process. The traditional model assumes circular tool motion, while the new model accounts for trochoidal tool ...
  • Force control of a hydraulic servo system 

    Kennedy, Joseph L. (University of Missouri--Columbia, 2009)
    The objective of this thesis is to model a hydraulic servo system using force control and then improve upon the performance of the model/system through feedback control design. The hydraulic system is first constructed and ...
  • Hysteresis and dither in a metering poppet valve [abstract] 

    Kennedy, Joseph L.; Fales, Roger (University of Missouri--Columbia. Office of Undergraduate Research, 2007)
    The objective of the following thesis is to reduce the hysteresis of a hydraulic flow control valve through the use of dither. A hydraulic valve system, used in controlling the valve and collecting and converting the ...
  • Metered poppet valve [abstract] 

    Keim, Timothy; Fales, Roger; Cline, C. Harvey O. (Curtis Harvey Omari), 1978-; Li, Chang; Kennedy, Joseph L. (University of Missouri--Columbia. Office of Undergraduate Research, 2007)
    The metering poppet valve is a new design that is trying to maximize stability and performance. Poppet valves are typically not used as metering valves because they have stability issues. This new valve is trying to rectify ...