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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2011
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Article
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Fig 10
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Research Article
Proportional-Derivative Observer-Based Backstepping Control for an Underwater Manipulator
Figure 10
Time trajectories of the task space (
) errors for the circular trajectory in an uncertain and disturbed condition.
(a)
Position tracking errors in PID
(b)
Position observer errors in PID
(c)
Position tracking errors in MRC
(d)
Position observer errors in MRC