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Underwater Robots - Gianluca Antonelli.pdf

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190 7. Dynamic Control of UVMSs<br />

Fig. 7.22. Virtual decomposition control. Sketch ofthe initial configuration of the<br />

system and trace of the desired path<br />

The redundancy of the system is used to keep still the vehicle. Notice,<br />

that this choice isaimed only at simplifying the analysis of the discussed<br />

controller. More complex secondary tasks can easily be given with the inverse<br />

kinematics algorithm [20, 24, 25].<br />

The control law parameters are:<br />

λ p,0 =0. 4<br />

λ o,0 =0. 6<br />

λ i =0. 9 i =1,...,n<br />

K v,0 =blockdiag { 15000I 3 , 16000I 3 }<br />

K v,i =blockdiag { 900I 3 , 1100I 3 }<br />

K θ,0 =14I 4<br />

i =1,...,n<br />

K θ,i =21I 4<br />

i =1,...,n

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