ORCID

Abstract

Control by Interconnection (CbI) and Interconnection and Damping Assignment Passivity-Based Control (IDA-PBC) are two nonlinear design methodologies that exploit passivity to construct stabilising controllers. While CbI is known to be a subset of IDA-PBC, the converse link has remained open. This paper revisits CbI by utilising dynamic invariants beyond Casimirs and a more general control structure. Using this more general structure we show a one-to-one correspondence between IDA-PBC and CbI controllers for the class of mechanical systems without friction.

Publication Date

2026-02-04

Publication Title

IEEE Transactions on Automatic Control

ISSN

0018-9286

Acceptance Date

2026-01-23

Deposit Date

2026-02-26

Keywords

Nonlinear control systems, nonlinear systems, output feedback

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

First Page

1

Last Page

8

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