Differentially-Private Distributed Model Predictive Control of Linear Discrete-Time Systems with Global Constraints
<|reference_start|>Differentially-Private Distributed Model Predictive Control of Linear Discrete-Time Systems with Global Constraints: Distributed model predictive control (DMPC) has attracted extensive attention as it can explicitly handle system constraints and achieve optimal control in a decentralized manner. However, the deployment of DMPC strategies generally requires the sharing of sensitive data among subsystems, which may violate the privacy of participating systems. In this paper, we propose a differentially-private DMPC algorithm for linear discrete-time systems subject to coupled global constraints. Specifically, we first show that a conventional distributed dual gradient algorithm can be used to address the considered DMPC problem but cannot provide strong privacy preservation. Then, to protect privacy against the eavesdropper, we incorporate a differential-privacy noise injection mechanism into the DMPC framework and prove that the resulting distributed optimization algorithm can ensure both provable convergence to a global optimal solution and rigorous $\epsilon$-differential privacy. In addition, an implementation strategy of the DMPC is designed such that the recursive feasibility and stability of the closed-loop system are guaranteed. Simulation results are provided to demonstrate the effectiveness of the developed approach.<|reference_end|>
@article{zhang2024differentially-private,
    title={Differentially-Private Distributed Model Predictive Control of Linear
  Discrete-Time Systems with Global Constraints},
    author={Kaixiang Zhang, Yongqiang Wang, Ziyou Song, Zhaojian Li},
    journal={arXiv preprint arXiv:2405.18690},
    year={2024},
    archivePrefix={arXiv},
    eprint={2405.18690},
    primaryClass={eess.SY cs.SY}
}