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arXiv 2408.07553eess.SYcs.SY
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有损网络下用于跟踪的远程管式模型预测控制

Remote Tube-based MPC for Tracking Over Lossy Networks

David Umsonst, Fernando S. Barbosa

AI总结:

本文针对有损网络下的受约束系统控制问题,提出将管式模型预测控制拆分为本地扰动抑制与远程最优轨迹生成两部分,并通过倒立摆仿真验证了其在丢包和扰动下的递归可行性与跟踪性能。

摘要:

本文研究在控制器与系统通过有损网络连接的情况下,受约束系统在扰动作用下的控制问题。为此,我们提出一种新颖的框架,将管式模型预测控制(tube-based model predictive control)的概念拆分为两部分:一部分在系统本地运行,负责扰动抑制;另一部分在远程运行,提供满足系统状态和输入约束的最优输入轨迹。该方法的关键在于本地系统上存在一个标称模型和一个辅助控制器。我们给出了在双向存在扰动和丢包情况下关于递归可行性和跟踪能力的理论保证。为验证所提方法的有效性,我们在控制倒立摆小车系统的场景中将其与一种最先进的方案进行了对比。我们使用线性化和非线性系统动力学,以及不同的丢包概率和扰动进行了大量仿真。本工作的代码可在 https://github.com/EricssonResearch/Robust-Tracking-MPC-over-Lossy-Networks 获取。

英文摘要:

This paper addresses the problem of controlling constrained systems subject to disturbances in the case where controller and system are connected over a lossy network. To do so, we propose a novel framework that splits the concept of tube-based model predictive control into two parts. One runs locally on the system and is responsible for disturbance rejection, while the other runs remotely and provides optimal input trajectories that satisfy the system's state and input constraints. Key to our approach is the presence of a nominal model and an ancillary controller on the local system. Theoretical guarantees regarding the recursive feasibility and the tracking capabilities in the presence of disturbances and packet losses in both directions are provided. To test the efficacy of the proposed approach, we compare it to a state-of-the-art solution in the case of controlling a cartpole system. Extensive simulations are carried out with both linearized and nonlinear system dynamics, as well as different packet loss probabilities and disturbances. The code for this work is available at https://github.com/EricssonResearch/Robust-Tracking-MPC-over-Lossy-Networks

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