文章基本信息

标题：Optimizing a hybrid diesel power unit using extremum seeking control
本地全文：下载
作者：J. Popp ; J. Deutscher
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2017
卷号：50
期号：1
页码：7849-7854
DOI：10.1016/j.ifacol.2017.08.736
语种：English
出版社：Elsevier
摘要：AbstractIn this paper the problem of online-optimizing the steady-state efficiency of a hybrid single-cylinder diesel power unit is considered. The special characteristic of the proposed concept is using the time path of the crankshaft position during one combustion cycle as an optimization variable. The problem can be stated in terms of an optimal control problem with free terminal time, which is solved by applying the model-free optimization scheme extremum seeking control. It is shown that by using a parameterization of the reference input based on trigonometric basis functions the evolution of the performance index can be modeled as a discrete-time nonlinear and multivariable system with a non-constant sampling interval. To this system the discrete-time variant of ES can be directly applied. An advantage of the proposed method is that no modeling of the thermodynamic processes is required. The robustness and accuracy of the concept is at first studied through simulations. Furthermore, experimental results are presented demonstrating the need for a model-free optimization and the beneficial property of the concept’s adaptation capability.
关键词：KeywordsExtremum seekingoptimal control problemadaptive controlhybrid power unitsingle-cylinder diesel engineexperimental validation