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<p>This paper investigates the input-to-state stabilization problem of permanent magnet linear synchronous motor (PMLSM) servo system with networked three closed-loop control in the presence of denial-of-service (DoS) attack. First, based on the singular perturbation theory, the analyzed servo system can be decomposed into a fast-time-scale subsystem for current loop and a slow-time-scale subsystem for position and velocity loops. Second, in view of the impact of DoS attack on the sampled control input for delayed updating, we propose the technique of merged signal to characterize the relationship between the ideal sampling signal and the DoS-induced sampling signal. Subsequently, each subsystem with this merged signal can be developed as the switched systems. A set of sufficient conditions are derived to guarantee the input-to-state stability for such system, and the design of proportional (P) and proportional-integral (PI) controllers is provided. Besides, the homotopy algorithm is specifically utilized to compute the control gain matrices for position and velocity loops, within a constrained structure. Finally, the numerical example is given to verify the validity and effectiveness of this theoretical result.</p>

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Input-to-State Stabilization of Networked Control PMLSM Servo System Subject to DoS Attack

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Yuchen Han,
  • Pengxin Wang,
  • Yunzhe Men,
  • Zhifang Lin

摘要

This paper investigates the input-to-state stabilization problem of permanent magnet linear synchronous motor (PMLSM) servo system with networked three closed-loop control in the presence of denial-of-service (DoS) attack. First, based on the singular perturbation theory, the analyzed servo system can be decomposed into a fast-time-scale subsystem for current loop and a slow-time-scale subsystem for position and velocity loops. Second, in view of the impact of DoS attack on the sampled control input for delayed updating, we propose the technique of merged signal to characterize the relationship between the ideal sampling signal and the DoS-induced sampling signal. Subsequently, each subsystem with this merged signal can be developed as the switched systems. A set of sufficient conditions are derived to guarantee the input-to-state stability for such system, and the design of proportional (P) and proportional-integral (PI) controllers is provided. Besides, the homotopy algorithm is specifically utilized to compute the control gain matrices for position and velocity loops, within a constrained structure. Finally, the numerical example is given to verify the validity and effectiveness of this theoretical result.