News Column

Studies from University of Nevada Further Understanding of Mechanical Engineering

June 25, 2014

By a News Reporter-Staff News Editor at Journal of Engineering -- Current study results on Mechanical Engineering have been published. According to news reporting from Las Vegas, Nevada, by VerticalNews journalists, research stated, "The development of a novel adaptive autopilot for the dive-plane control of multi-input multi-output submarines with unmodeled dynamics, based on the L-1 adaptive control theory, is the subject of this article. An L-1 adaptive autopilot is designed for the trajectory control of the depth and pitch angle using bow and stern hydroplanes."

The news correspondents obtained a quote from the research from the University of Nevada, "Interestingly, the structure of the adaptive controller remains fixed, regardless of the nonlinearities and external disturbance inputs, retained in the model of the submarine. Unlike the traditional adaptive control laws, the L-1 adaptive control input is generated by filtering the estimated control signal. A nice feature of the control law is that it is possible to achieve fast adaptation and desirable performance bounds in the closed-loop system by the choice of large adaptation gains."

According to the news reporters, the research concluded: "Simulation results are presented, which show that the autopilot accomplishes precise trajectory control in the dive plane, despite parametric uncertainties, unmodeled nonlinearities, and random disturbance inputs."

For more information on this research see: Multi-input submarine control via L1 adaptive feedback despite uncertainties. Proceedings of the Institution of Mechanical Engineers Part I-Journal of Systems and Control Engineering, 2014;228(5):330-347. Proceedings of the Institution of Mechanical Engineers Part I-Journal of Systems and Control Engineering can be contacted at: Sage Publications Ltd, 1 Olivers Yard, 55 City Road, London EC1Y 1SP, England.

Our news journalists report that additional information may be obtained by contacting K.W. Lee, University of Nevada, Dept. of Elect & Comp Engn, Las Vegas, NV 89154, United States.

Keywords for this news article include: Nevada, Las Vegas, United States, Mechanical Engineering, North and Central America

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Source: Journal of Engineering

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