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Underwater Robots - Gianluca Antonelli.pdf

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136 6. Kinematic Control of UVMSs<br />

manipulability [-]<br />

d[m]<br />

vehicle roll and pitch [deg]<br />

0.4<br />

0.3<br />

0.2<br />

0.1<br />

0<br />

0 10 20 30 40 50<br />

time [s]<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

0 10 20 30 40 50<br />

time [s]<br />

20<br />

15<br />

10<br />

5<br />

0<br />

0 10 20 30 40 50<br />

time [s]<br />

α 1 [-]<br />

α 2 [-]<br />

α 3 [-]<br />

1<br />

0.5<br />

0<br />

0<br />

1<br />

10 20 30<br />

time [s]<br />

40 50<br />

0.5<br />

0<br />

0<br />

1<br />

10 20 30<br />

time [s]<br />

40 50<br />

0.5<br />

0<br />

0 10 20 30<br />

time [s]<br />

40 50<br />

Fig. 6.21. Case study n. 4. Variables of interest for the secondary task (left)<br />

and output of the fuzzy inference system (right). For this specific mission, the<br />

manipulability task is not excited, the distance from the mechanical limit and the<br />

vehicle roll and pitch tasks are kept in their safe range

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