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arXiv 2109.09558math.OC
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数据驱动的分布鲁棒MPC:一种间接反馈方法

Data-driven Distributionally Robust MPC: An indirect feedback approach

Christoph Mark, Steven Liu

摘要:

针对线性离散时间系统受无界相关附加扰动的问题,提出了一种分布鲁棒随机模型预测控制(SMPC)方法。我们认为硬输入约束和状态机会约束,这是近似的分布鲁棒(DR)条件风险价值(CVaR)的约束在Wasserstein模糊集。计算复杂性通过采用具有间接反馈的基于管的MPC方案来降低,使得可以离线采样错误场景。通过软化CVaR约束来保证递归可行性。四个房间的温度控制的例子证明了这种方法。

英文摘要:

This paper presents a distributionally robust stochastic model predictive control (SMPC) approach for linear discrete-time systems subject to unbounded and correlated additive disturbances. We consider hard input constraints and state chance constraints, which are approximated as distributionally robust (DR) Conditional Value-at-Risk (CVaR) constraints over a Wasserstein ambiguity set. The computational complexity is reduced by resorting to a tube-based MPC scheme with indirect feedback, such that the error scenarios can be sampled offline. Recursive feasibility is guaranteed by softening the CVaR constraint. The approach is demonstrated on a four-room temperature control example.

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