{
  "abstract": "This paper investigates adaptive predefined-time and prescribed-accuracy output-feedback control for integer-order strict-feedback nonlinear systems subject to asymmetric dead-zone actuation and unavailable states. Although the controlled plant is integer order, the proposed feedback mechanism employs complementary noninteger powers below and above unity. The resulting dynamic fractional-power feedback loop assigns the convergence-time bound through a single time parameter while maintaining a prescribed residual tracking band. Instead of requiring the exact inverse of the actuator characteristic, the asymmetric dead zone is decomposed into a sign-dependent positive gain and a bounded offset that are incorporated directly into the control recursion. A neural state observer reconstructs the unavailable states, radial basis function neural networks approximate the unknown nonlinearities, and command-filtered backstepping avoids the repeated differentiation of virtual controls. Lyapunov analysis proves that all closed-loop signals remain bounded and that the tracking error enters the prescribed accuracy set within the predefined-time bound. Simulations involving a benchmark nonlinear plant and a single-link manipulator demonstrate the effectiveness of the fractional-power feedback, state-estimation, and dead-zone compensation mechanisms.",
  "abstract_shown": true,
  "affiliations": [
    "School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Nan Wang"
    },
    {
      "affs": [
        0
      ],
      "name": "Rui Meng"
    },
    {
      "affs": [
        0
      ],
      "name": "Fazhan Tao"
    },
    {
      "affs": [
        0
      ],
      "name": "Ji Zhang",
      "orcid": "0000-0001-7642-7607"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/949kv59knbqrm.bib",
  "cited_by": 0,
  "doi": "10.3390/fractalfract10110750",
  "fulltext_url": null,
  "id": "949kv59knbqrm",
  "issns": [
    "2504-3110"
  ],
  "landing_url": "https://www.mdpi.com/2504-3110/10/11/750",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2207|Adaptive Control of Nonlinear Systems"
    ]
  ],
  "openalex": "W7224130892",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/949kv59knbqrm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:32Z",
      "native_id": "10.3390/fractalfract10110750",
      "source": "crossref",
      "url": "https://www.mdpi.com/2504-3110/10/11/750"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "issn:2504-3110",
      "subfield": "analysis-pdes"
    }
  ],
  "title": "Adaptive Predefined-Time Output-Feedback Control of Uncertain Nonlinear Systems with Dead-Zone Actuation via Fractional-Power Feedback",
  "title_text": "Adaptive Predefined-Time Output-Feedback Control of Uncertain Nonlinear Systems with Dead-Zone Actuation via Fractional-Power Feedback",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:32Z",
  "url": "https://research.draconitic.com/paper/949kv59knbqrm",
  "venue": "Fractal and Fractional",
  "versions": []
}