W artykule autorzy przedstawili koncepcję, projekt oraz prototyp sztucznej ryby - podwodnego robota mobilnego. Krótko opisano budowę robota oraz ideę jego działania. Przedstawiono szczegóły elektronicznego układu sterowania oraz aplikacji sterujących robotem na poziomie mikrokontrolera i komputera PC.
EN
In this paper authors describe concept, design and build of fish-like underwater mobile robot. In the beginning, they consider shortly how the robot is build and how it operates. Next part presents some details of electronic control system and microcontroller level steering application and PC level steering application.
This study discusses the use of quaternions and dual quaternions in the description of artificial fish kinematics. The investigation offered here illustrates quaternion and dual quaternion algebra, as well as its implementation in the software chosen. When it comes to numerical stability, quaternions are better than matrices because a normalised quaternion always shows the correct rotation, while a matrix more easily loses its orthogonality due to rounding errors and oversizing. Although quaternions are more compact than rotation matrices, using quaternions does not always provide less numerical computation and the amount of memory needed. In this paper, an algebraic form of quaternion representation is provided which is less memory-demanding than the matrix representation. All the functions that were used to prepare this work are presented, and they can be employed to conduct more research on how well quaternions work in a specific assignment.
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