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Permanent link (DOI): https://doi.org/10.7939/R37M1M
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Fractional Order Transmission Line Modeling and Parameter Identification Open Access
- Other title
Fractional Order Calculus
- Type of item
- Degree grantor
University of Alberta
- Author or creator
Razib, Mohammad Yeasin
- Supervisor and department
Tongwen Chen (Electrical and Computer Engineering)
Horacio Marquez (Electrical and Computer Engineering)
- Examining committee member and department
Qing Zhao (Electrical and Computer Engineering)
Vinay Prasad (Chemical and Materials Engineering)
Department of Electrical and Computer Engineering
- Date accepted
- Graduation date
Master of Science
- Degree level
Fractional order calculus (FOC) has wide applications in modeling natural behavior of systems related to different areas of engineering including bioengineering, viscoelasticity, electronics, robotics, control theory and signal processing. This thesis aims at modeling a lossy transmission line using fractional order calculus and identifying its parameters.
A lossy transmission line is considered where its behavior is modeled by a fractional order transfer function. A semi-infinite lossy transmission line is presented with its
distributed parameters R, L, C and ordinary AC circuit theory is applied to find the partial differential equations. Furthermore, applying boundary conditions and the
Laplace transformation a generalized fractional order transfer function of the lossy transmission line is obtained. A finite length lossy transmission line terminated with arbitrary load is also considered and its fractional order transfer function has been derived.
Next, the frequency responses of lossy transmission lines from their fractional order transfer functions are also derived. Simulation results are presented to validate
the frequency responses. Based on the simulation results it can be concluded that the derived fractional order transmission line model is capable of capturing the
phenomenon of a distributed parameter transmission line.
The achievement of modeling a highly accurate transmission line requires that a realistic account needs to be taken of its parameters. Therefore, a parameter identification technique to identify the parameters of the fractional order lossy transmission line is introduced.
Finally, a few open problems are listed as the future research directions.
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