Output regulation for decentralized networked control systems under jamming attacks and actuator saturation

Area of Science:

• Control Systems Engineering
• Cybersecurity
• Networked Systems

Background:

• Decentralized networked control systems (DNCS) are vulnerable to external disturbances like jamming attacks.
• Actuator saturation can limit the system's ability to respond effectively.
• Jamming attacks aim to degrade signal quality and cause packet loss, disrupting system performance.

Purpose of the Study:

• To solve the output regulation problem for DNCS under jamming attacks and actuator saturation.
• To derive a jammer's power allocation strategy that causes packet dropout.
• To establish conditions for asymptotic regulation in the presence of such attacks.

Main Methods:

• State feedback control is employed to address the output regulation problem.
• A jammer's power allocation strategy is mathematically derived to induce signal-interference-plus-noise ratio degradation and packet dropout.
• The relationship between null controllable region and regulatable region is analyzed under attack-induced packet dropout.
• An asymptotically regulatable region is constructed based on the null controllable region for both the plant and exosystem.

Main Results:

• A method for output regulation of DNCS under jamming and saturation is presented.
• The jammer's optimal power allocation strategy is determined.
• A theoretical framework relating controllability and regulatability under packet loss is established.
• The construction of an asymptotically regulatable region is demonstrated.

Conclusions:

• The proposed state feedback approach effectively solves the output regulation problem for DNCS under jamming attacks and actuator saturation.
• The derived jammer strategy and analysis of control regions provide insights into system resilience against cyber-physical attacks.
• An illustrative example validates the effectiveness of the presented techniques in ensuring system stability and performance.