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Optimized fractional low and highpass filters of (1 + α) order on FPAA

Singh, Nikhil and Mehta, Utkal V. and Kothari, Kajal and Cirrincione, Maurizio (2020) Optimized fractional low and highpass filters of (1 + α) order on FPAA. Bulletin of the Polish Academy of Sciences. Technical Sciences, 68 (3). pp. 635-644. ISSN 0239-7528

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This work proposes an optimum design and implementation of fractional-order Butterworth filter of order (1 + α), with the help of analog reconfigurable field-programmable analog array (FPAA). The designed filter coefficients are obtained after dual constraint optimization to balance the tradeoffs between magnitude error and stability margin together. The resulting filter ensures better robustness with less sensitivity to parameter variation and minimum least square error (LSE) in magnitude responses, passband and stopband errors as well as a better –3dB normalized frequency approximation at 1 rad/s and a stability margin. Finally, experimental results have shown both lowpass and highpass fractional step values. The FPAA-configured outputs represent the possibility to implement the real-time fractional filter behavior with close approximation to the theoretical design.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > Robotics and Automation
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User: Utkal Mehta
Date Deposited: 07 Jul 2020 03:51
Last Modified: 04 Aug 2020 00:28

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