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arXiv · 2007.07733

The Isoline Tracking in Unknown Scalar Fields with Concentration Feedback

Fei Dong·Keyou You
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Abstract

The isoline tracking of this work is concerned with the control design for a sensing vehicle to track a desired isoline of an unknown scalar field. To this end, we propose a simple PI-like controller for a Dubins vehicle in the GPS-denied environments. Our key idea lies in the design of a novel sliding surface based error in the standard PI controller. For the circular field, we show that the P-like controller can globally regulate the vehicle to the desired isoline with the steady-state error that can be arbitrarily reduced by increasing the P gain, and is eliminated by the PI-like controller. For any smoothing field, the P-like controller is able to achieve the local regulation. Then, it is extended to the cases of a single-integrator vehicle and a doubleintegrator vehicle, respectively. Finally, the effectiveness and advantages of our approaches are validated via simulations on the fixed-wing UAV and quadrotor simulators.

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Fei Dong, Keyou You. 2020-07-15. The Isoline Tracking in Unknown Scalar Fields with Concentration Feedback. https://doi.org/10.1016/j.automatica.2021.109779

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