带EGR的两级涡轮增压柴油机空气系统的平面前馈控制

P. Kotman, M. Bitzer, A. Kugi
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引用次数: 17

摘要

本文研究了一种基于非线性反演的柴油机废气再循环两级增压空气系统前馈控制器。在高阶参考模型的基础上,应用奇异摄动理论推导出控制器设计的非线性数学模型。在这种情况下,不同空气系统组件的简化模型以这样一种方式制定,即所得的降阶模型是差分平坦的。然后,利用设计模型的微分平面性推导出前馈控制器。最后通过仿真研究对降阶模型的逼近性能和前馈控制方案的适用性进行了评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Flatness-based feedforward control of a two-stage turbocharged diesel air system with EGR
In this work, a nonlinear inversion-based feed-forward controller for a two-stage turbocharged diesel air system with exhaust-gas recirculation is developed. A nonlinear mathematical model is derived for the controller design on the basis of a high-order reference model by applying the singular perturbation theory. In this context, simplified models of different air system components are formulated in such a way that the resulting reduced-order model is differentially flat. Thereafter, the differential flatness property of the design model is exploited to derive the feedforward controller. The approximation performance of the reduced-order model as well as the suitability of the developed feedforward control scheme are finally evaluated by means of simulation studies.
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