Unscented optimal control

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Template:Short description In mathematics, unscented optimal control combines the notion of the unscented transform with deterministic optimal control to address a class of uncertain optimal control problems.[1][2][3][4] It is a specific application of tychastic optimal control theory,[1][5][6][7] which is a generalization of Riemmann-Stieltjes optimal control theory,[8][9] a concept introduced by Ross and his coworkers.

Mathematical description

Suppose that the initial state x0 of a dynamical system,

x˙=f(x,u,t)

is an uncertain quantity. Let Xi be the sigma points. Then sigma-copies of the dynamical system are given by,

X˙i=f(Xi,u,t)

Applying standard deterministic optimal control principles to this ensemble generates an unscented optimal control.[10][11][12] Unscented optimal control is a special case of tychastic optimal control theory.[1][5][13] According to Aubin[13] and Ross,[1] tychastic processes differ from stochastic processes in that a tychastic process is conditionally deterministic.

Applications

Unscented optimal control theory has been applied to UAV guidance,[12][14] spacecraft attitude control,[6] air-traffic control[15] and low-thrust trajectory optimization[2][10]

References

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