サイバーフィジカルシステムにおけるサンプリングデータベースオブザーバーと耐性イベントトリガー制御器の設計による境界混合サイバー攻撃の緩和
IEEE transactions on cybernetics
|December 30, 2025
まとめ
本研究では、サイバーフィジカルシステム(CPS)を偽データインジェクション(FDI)攻撃とサービス拒否(DoS)攻撃の組み合わせに対して保護するセキュア制御手法を提案する。このアプローチは、ネットワーク制約と攻撃にもかかわらず、システムの安定性と性能を保証する。
科学分野:
- サイバーフィジカルシステムセキュリティ
- 制御理論
- ネットワークシステム
背景:
- サイバーフィジカルシステム(CPS)は、洗練されたネットワーク攻撃に対して脆弱である。
- 偽データインジェクション(FDI)およびサービス拒否(DoS)を含む混合攻撃は、重大なセキュリティ上の課題をもたらす。
- 既存の制御方法は、伝送制約と不完全な状態情報に対処するのが難しい場合が多い。
研究 の 目的:
- 同時FDIおよびDoS攻撃下でのCPSのセキュア制御戦略を開発する。
- 状態推定およびFDI攻撃再構成のためのサンプリングデータオブザーバーを設計する。
- DoS攻撃を緩和するための耐性イベントトリガーメカニズム(ETM)を導入する。
主な方法:
- システム状態を推定し、FDI攻撃を再構成するために、新しいサンプリングデータオブザーバーを設計した。
- エネルギー境界付きDoS攻撃に耐えるために、耐性イベントトリガーメカニズム(ETM)を開発した。
- オブザーバーとETMを統合することにより、オブザーバーベースのイベントトリガー制御器を構築した。
主要な成果:
- 提案された制御器は、混合攻撃下での漸近的有界収束を保証する。
- このアプローチは、FDI攻撃を効果的に補償し、DoS攻撃に耐える。
- 3タンクシステムと倒立振子システムでのシミュレーションにより、優れた性能が実証された。
結論:
- 開発されたオブザーバーベースのイベントトリガー制御器は、混合ネットワーク攻撃に対してCPSに堅牢なセキュリティを提供する。
- この方法は、伝送制約と部分的な状態測定の限界を克服する。
- このアプローチは、セキュアで耐性のあるCPS運用に有望なソリューションを提供する。
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