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arXiv 2310.03330eess.SYcs.SY
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基于约束上下文贝叶斯优化(C-CMES)的车辆座舱气候MPC参数整定

Vehicle Cabin Climate MPC Parameter Tuning Using Constrained Contextual Bayesian Optimization (C-CMES)

David Stenger, Tim Reuscher, Heike Vallery, Dirk Abel

AI总结:

针对车辆多区域座舱气候MPC因外部流量变化导致性能下降的整定难题,提出基于约束上下文贝叶斯优化的流量依赖鲁棒参数整定方法,含后处理平滑步骤,仿真验证其性能优于恒定参数化且超调更低、行为更一致。

摘要:

几十年来,具备气候控制功能的座舱一直是车辆的标准配置。模型预测控制器(MPCs)在实现车辆座舱温度追踪方面已展现出可观效果,且有望提升无模型控制的性能。然而在多区域气候控制场景中,控制器的合理整定颇具挑战:外部因素(例如乘客触发的压缩机设置变化及由此导致的质量流量变化)会使控制性能下降。\n本文提出一种整定方法,可根据鼓风机质量流量自动确定鲁棒MPC参数。该方法采用约束上下文贝叶斯优化(BO)推导策略,在设定场景下满足约束条件的同时最小化高层代价函数。所提方法在训练回合中利用随机扰动和模型-对象失配,生成具备鲁棒抗扰能力的控制器参数,还包含一个后处理步骤以生成可用于实际应用的平滑策略。\n仿真结果表明:首先,依赖质量流量的策略在实现预期闭环行为的同时,性能优于恒定参数化方案;其次,该鲁棒整定方法大幅降低了最坏情况下的超调量,在不同运行条件下均可产生一致的闭环行为。

英文摘要:

Climate-controlled cabins have for decades been standard in vehicles. Model Predictive Controllers (MPCs) have shown promising results in achieving temperature tracking in vehicle cabins and may improve upon model-free control performance. However, for the multi-zone climate control case, proper controller tuning is challenging, as externally, e.g., passenger-triggered changes in compressor setting and thus mass flow lead to degraded control performance. This paper presents a tuning method to automatically determine robust MPC parameters, as a function of the blower mass flow. Constrained contextual Bayesian optimization (BO) is used to derive policies minimizing a high-level cost function subject to constraints in a defined scenario. The proposed method leverages random disturbances and model-plant mismatch within the training episodes to generate controller parameters achieving robust disturbance rejection. The method contains a postprocessing step to achieve smooth policies that can be utilized in real-world applications. First, simulation results show that the mass flow-dependent policy outperforms a constant parametrization, while achieving the desired closed-loop behavior. Second, the robust tuning method greatly reduces worst-case overshoot and produces consistent closed-loop behavior under varying operating conditions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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