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arXiv 2104.11706cs.LGcs.SYeess.SY
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间歇过程控制中的安全机会约束强化学习

Safe Chance Constrained Reinforcement Learning for Batch Process Control

The University of Manchester(曼彻斯特大学);University College London(伦敦大学学院);Imperial College London(伦敦帝国理工学院)

Max Mowbray, Panagiotis Petsagkourakis, Ehecatl Antonio del Río Chanona, Dongda Zhang

摘要:

强化学习(RL)控制器在控制社区中引起了兴奋。RL控制器相对于现有方法的主要优点是它们能够独立于过程不确定性的明确假设来优化不确定系统。最近工程应用的重点一直指向安全RL控制器的发展。以前的工作已经提出了方法来考虑约束满足通过约束收紧从域的随机模型预测控制。在这里,我们扩展这些方法来考虑工厂模型不匹配。具体来说,我们提出了一种数据驱动的方法,利用高斯过程的离线仿真模型,并使用相关的后验不确定性预测来考虑联合机会约束和工厂模型不匹配。该方法是基准对非线性模型预测控制通过案例研究。结果表明,该方法的能力,占过程的不确定性,即使在工厂模型不匹配的存在下,使联合机会约束的满意。

英文摘要:

Reinforcement Learning (RL) controllers have generated excitement within the control community. The primary advantage of RL controllers relative to existing methods is their ability to optimize uncertain systems independently of explicit assumption of process uncertainty. Recent focus on engineering applications has been directed towards the development of safe RL controllers. Previous works have proposed approaches to account for constraint satisfaction through constraint tightening from the domain of stochastic model predictive control. Here, we extend these approaches to account for plant-model mismatch. Specifically, we propose a data-driven approach that utilizes Gaussian processes for the offline simulation model and use the associated posterior uncertainty prediction to account for joint chance constraints and plant-model mismatch. The method is benchmarked against nonlinear model predictive control via case studies. The results demonstrate the ability of the methodology to account for process uncertainty, enabling satisfaction of joint chance constraints even in the presence of plant-model mismatch.

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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