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Systems Engineering is a Human Acvity • Users* • Designers—Focus of this lecture* • Manufacturer* • Part of the system of systems
Department of Electrical Engineering and Computer Science 6 02 How YouTube was “Hijacked” Written: May 2009 “On the Internet, no one knows you’re a dog,” went a now-famous New Yorker cartoon in 1996 This remark, made in jest, is a fact (and adds to the humor) The Internet architecture, and its routing
i We pretend that technology, our technology, is something of a life force, a will,andathrustofitsown,onwhichwecanblameall,withwhichwecan explainall
the general principles Engineering deals with making the approximations and judgment calls to create simple models that focus on the critical elements of a situation, and from there to design workable systems The important point here is that engineering (at this level) cannot really be separated from the-ory
Control Engineering 9-17 Simulation • ODE solution – dynamical model: – Euler integration method: – Runge-Kutta method: ode45 in Matlab • Can do simple problems by integrating ODEs • Issues with modeling of engineered systems: – stiff systems, algebraic loops – mixture of continuous and sampled time
Apr 01, 2013 · Apply systems theory and systems engineering approaches to ID, evaluate, eliminate, and control system hazards through analysis, design, and management procedures STAMP – Systems Theoretic Accident Model and Processes Dr Nancy Leveson Focus on the systemic sources Compare CG MAB to STAMP findings to determine if
Control Systems K Craig 11 Instability in Feedback Control Systems • All feedback systems can become unstable if improperly designed • In all real-world components there is some kind of lagging behavior between the input and output, characterized by ?’s and ? n’s • Instantaneous response is impossible in the real world