Systematischer Entwurf hierarchisch-hybrider Regelsysteme

分层混合控制系统的系统设计

• 批准号: 5362789
• 负责人: Professor Dr.-Ing. Jörg Raisch
• 金额: --
• 依托单位: Fachgebiet Regelungssysteme
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5362789?language=en
• 关键词: Systematischer; Entwurf; hierarchisch; hybrider; Regelsysteme

In the chemical industries discontinuously operated plants are widely used for the production of fine or specialty chemicals. A typical task is to maximize profit while guaranteeing safety and certain lower bounds for quality. To achieve this specification the control input signals have to be suitably manipulated. From a theoretical point of view this is a highly nontrivial control problem as some of the inputs are real- or continuous-valued signals, while others can only take a finite number of discrete values. In practice recipe-based approaches prevail. They imply determining a fixed recipe, which provides information about the sequence and duration of well-defined tasks for every desired product. In a subsequent step commonly called "scheduling" these tasks have to be assigned to available resources. This approach has two important shortcomings: solutions are clearly far from optimal; moreover, as the approach is open-loop, it will only work in the absence of unforseen disturbances. The topic of the proposed project is to investigate alternative control strategies for this type of plant. In particular, by combining an optimization based approach with an abstraction based method from hybrid systems theory we expect to be able to compute closed-loop control strategies that significantly improve performance while keeping a lid on complexity.

在化学工业中，不连续操作的设备广泛用于精细或特种化学品的生产。一个典型的任务是在保证安全和一定的质量下限的同时使利润最大化。为了达到这个规格，控制输入信号必须被适当地操纵。从理论的角度来看，这是一个高度非平凡的控制问题，因为一些输入是真实的或连续值信号，而其他输入只能取有限数量的离散值。在实践中，以食谱为基础的方法占主导地位。它们意味着确定一个固定的配方，为每个所需的产品提供有关明确定义的任务的顺序和持续时间的信息。在通常称为“调度”的后续步骤中，必须将这些任务分配给可用资源。这种方法有两个重要的缺点：解决方案显然远远不是最佳的;此外，由于这种方法是开环的，它只会在没有不可预见的干扰。拟议项目的主题是研究这种类型的工厂的替代控制策略。特别是，通过将基于优化的方法与混合系统理论的基于抽象的方法相结合，我们期望能够计算出闭环控制策略，从而显着提高性能，同时保持复杂性。