2022
DOI: 10.3390/jmse10040484
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Strouhal Number Measurement for Novel Biomimetic Folding Fins Using an Image Processing Method

Abstract: The aim of the paper is to present the parameters of new biomimetic folding fins measured using image processing. Tests were carried out for different types of folding biomimetic fins and compared to the most popular fins on the market. A noninvasive image processing method was used to estimate divers’ velocities in the vertical and horizontal directions and the frequency and the amplitude of the fin trailing edge, and as a result, the Strouhal number was calculated. These tests are a continuation of studies c… Show more

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Cited by 12 publications
(8 citation statements)
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“…The research was carried out by an expert using a designed model of the CyberSeal, designed depth controllers and various tuning methods. As a result of the preliminary study, the upper and bottom barriers assume the following values: (a) for PID controller [k p , k d , k i ]-bottom barrier equals [200, 10,000, −1] and upper barrier equals [600, 40,000, 1], (b) for SM controller [λ, k s , ϕ]-bottom barrier equals [−5, −100, −2] and upper barrier equals [5,100,2]. The main objective of the primary research was to compare two classic controllers, three methods optimized by fitness functions in response to changing the desired immersion value.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The research was carried out by an expert using a designed model of the CyberSeal, designed depth controllers and various tuning methods. As a result of the preliminary study, the upper and bottom barriers assume the following values: (a) for PID controller [k p , k d , k i ]-bottom barrier equals [200, 10,000, −1] and upper barrier equals [600, 40,000, 1], (b) for SM controller [λ, k s , ϕ]-bottom barrier equals [−5, −100, −2] and upper barrier equals [5,100,2]. The main objective of the primary research was to compare two classic controllers, three methods optimized by fitness functions in response to changing the desired immersion value.…”
Section: Resultsmentioning
confidence: 99%
“…The development of bionics resulted in a new trend in the construction of underwater mobile robots, whose main idea is to imitate underwater animals. These vehicles are called biomimetic underwater vehicles (BUVs) [5,6], which mimic construction and motion kinematics. Most often, the prototype vehicle is inspired by the shape and movement of aquatic creatures, although there are designed based on manta rays, penguins and many others.…”
Section: Introductionmentioning
confidence: 99%
“…The second test consisted in combining data from two different sources: from sensors in the vehicle and obtained with the vehicle motion registered on video and then analysed in the Tracker software. Image analysis is a very popular solution in motion analysis of underwater robotic (Jurczyk et al, 2020;Piskur, 2022). In order to perform motion analysis of the vehicle, the GoPro® Hero 6 camcorder was placed on a stand under the water surface.…”
Section: Experimental Testsmentioning
confidence: 99%
“…Wings are vital for the maneuverability of underwater gliders [23]. An appropriate wing can effectively improve the motion performance of underwater vehicles [24]. Hence, despite extensive scholarly research on AUV water entry impact problems, an additional exploration of the impact characteristics of airdropped underwater gliders is warranted.…”
Section: Introductionmentioning
confidence: 99%