Sampled-Data Control using Hermite-Obreschkoff Methods with an IDA-PBC Example

Le Zhang; Paul Kotyczka

doi:10.1016/j.ifacol.2025.11.082

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arXiv · 2501.11495

Sampled-Data Control using Hermite-Obreschkoff Methods with an IDA-PBC Example

Le Zhang·Paul Kotyczka

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Abstract

The motivation for this paper is the implementation of nonlinear state feedback control, designed based on the continuous-time plant model, in a sampled control loop under relatively slow sampling. In previous work we have shown that using one-step predictions of the target dynamics with higher order integration schemes, together with possibly higher order input shaping, is a simple and effective way to increase the feasible sampling times until performance degradation and instability occur. In this contribution we present a unifying derivation for arbitrary orders of the previously used Lobatto IIIA collocation and Hermite interpolation schemes through the Hermite-Obreschkoff formula. We derive, moreover, an IDA-PBC controller for a magnetic levitation system, which requires a non-constant target interconnection matrix, and show experimental results.

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Le Zhang, Paul Kotyczka. 2025-01-20. Sampled-Data Control using Hermite-Obreschkoff Methods with an IDA-PBC Example. https://doi.org/10.1016/j.ifacol.2025.11.082

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