An improved hold strategy to packet loss compensation

This paper investigates networked control systems subjected to packet loss over the channel between actuator and controller. The packet loss is modeled as an i.i.d. Bernoulli process. An improved held compensation strategy is proposed for the consecutive packet loss. Based on the fact that the past signal held multi-step in a buffer is too old to be suitable for the current calculation, we delete the too old held signal. A switching approach is used to describe the dynamics of the held sensor measurements, where the switching rule associates with the packet loss. A hold-based stability analysis and controller design framework dependent on the packet loss probability is established. A numerical example has shown the usefulness of the proposed results.

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