Abstract

We present an example of application covering several cases using the extension of the Pontryaguine minimum principle (PMP) in the case where we add a constraint on reaching a target variety at the final time: the Zermelo problem with current speed more than Boat speed hypothesis, where we consider a boat crossing a channel under a strong current and where we try to reach the opposite bank by minimizing the lateral offset or by minimizing the crossing time.

Highlights

  • We present an example of application covering several cases using the extension of the Pontryaguine minimum principle (PMP) in the case where we add a constraint on reaching a target variety at the final time: the Zermelo problem with current speed more than Boat speed hypothesis, where we consider a boat crossing a channel under a strong current and where we try to reach the opposite bank by minimizing the lateral offset or by minimizing the crossing time

  • The theorem of the Pontryagin’s minimum principle PMP: If is an optimal control, by noting and by defining the deputy state the trajectory associated with the control solution of

  • The PMP here provides only a necessary condition for optimization. It does not say anything about the existence of optimal control and it does not provide a sufficient condition a priori

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Summary

We have Where the Hamiltonian

A triplet Remark: satisfying the above conditions is called an extremal. The PMP here provides only a necessary condition for optimization. It does not say anything about the existence of optimal control and it does not provide a sufficient condition a priori. We consider the extremes and we sort

Boat crossing a channel of width
And the transversality condition on gives
The Abnormal extremal we get again
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