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Engineering Review : International journal for publishing of original researches from the aspect of structural analysis, materials and new technologies in the field of mechanical engineering, shipbuilding, fundamental engineering sciences, computer sciences, electrical engin, Vol. 42 No. 2, 2022.

Original scientific paper

https://doi.org/10.30765/er.1779

Sensitivity optimization method for 4th order CBQ structure LP filter

Even Živić ; Technical Department, Tehnomont Shipyard Pula Ltd., Fižela 6, Pula, Croatia
Nino Stojković orcid id orcid.org/0000-0001-9343-1739 ; Department of Electric Power System, Faculty of Engineering, University of Rijeka, Vukovarska 58, Rijeka, Croatia
Saša Sladić ; Department of Electric Power System, Faculty of Engineering, University of Rijeka, Vukovarska 58, Rijeka, Croatia

Full text: english pdf 778 Kb

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Abstract

This paper describes the design and optimization method for a 4th order low-pass filter designed as a cascade of biquarts and approximated by Butterworth. Schoeffler sensitivity, multiparameter sensitivity measurement, and Monte Carlo analysis were used for sensitivity measurement, filter tuning, and optimization confirmation. The constraints on the filter characteristics due to the Butterworth approximation are also presented, together with the constraints on optimization to obtain a narrow range of values for the filter elements. Three different types of optimization parameters were used to confirm the optimization method. Finally, a 4th order low pass filter with a cascade structure of biquarts was compared to a 4th order filter without feedback and confirmed to have lower sensitivity.

Keywords

optimization; 4th order low-pass filter; CBQ structure; sensitivity; Monte Carlo analysis; multi-parameter sensitivity measure

Hrčak ID:

286585

URI

https://hrcak.srce.hr/286585

Publication date:

21.2.2022.

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