June 24, 2017
June 24, 2017
June 28, 2017
Ocean and Marine
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.
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