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Apply Second Order System Identifications

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2017 ASEE Annual Conference & Exposition


Columbus, Ohio

Publication Date

June 24, 2017

Start Date

June 24, 2017

End Date

June 28, 2017

Conference Session

Ocean and Marine Division Technical Session 1

Tagged Division

Ocean and Marine

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Paper Authors


Tooran Emami Ph. D. U.S. Coast Guard Academy

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Tooran Emami is currently a faculty member in the Department of Engineering at the U. S. Coast Guard Academy (USCGA). She received her M.S. and Ph.D. degrees in Electrical Engineering from Wichita State University (WSU) in 2006 and 2009, respectively. Her research interests are in control systems and particularly are dynamic positioning, autonomous vessel, Proportional Integral Derivative (PID) controllers, robust control, time delay, compensator design for continuous-time and discrete-time systems, and analog or digital filter design.

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This paper presents a 2nd order system identification of a linear time invariant system in an undergraduate junior level control systems laboratory. In this laboratory students identify a system transfer function from the parameters of cascade Resistor-Inductor-Capacitor (RLC) circuit by computer programming and analyze the output response. Electrical Engineering students use MATLAB software to determine the relationship between the standard 2nd order system transfer function with the simple RLC circuit parameters. This laboratory reinforces students’ learning about the effect of tuning the system parameters and demonstrates a wide range of system performance in time and frequency domains. Students learn about the relationship between the locations of poles and the system output responses. They learn about the relationship between the damping ratio and natural frequency response with the RLC circuit parameters in time domain and frequency responses.

In the second part of this laboratory students estimate the system parameters from a given time domain step response of a vessel output response. A continuous time transfer function of the vessel is identified from the measurement data. The vessel roll dynamics has been defined as a transfer function of roll-angle and the disturbance torque input. In this lab students apply the principle of standard 2nd order system identification to the vessel motion about its roll axis. Students in this lab demonstrate achievement of numerous a-k ABET criteria.

Emami, T. (2017, June), Apply Second Order System Identifications Paper presented at 2017 ASEE Annual Conference & Exposition, Columbus, Ohio. 10.18260/1-2--27599

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