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arXiv 1503.02300eess.SYcs.SY
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基于控制器局域网络引发的时间约束的模型预测控制

Model Predictive Control under Timing Constraints induced by Controller Area Networks

Georgia Institute of Technology(佐治亚理工学院)

Zhenwu Shi, Fumin Zhang

AI总结:

本文提出一种混合时间模型,用于在有限时间窗口内预测消息的时间,以提高在共享CAN上的多个模型预测控制器性能。

摘要:

当多个模型预测控制器在共享的控制器局域网络(CAN)上实现时,由于消息中的异质时间和延迟,其性能可能会降低。基于优先级的实时调度在CAN上引入了复杂的时间事件,尤其是当运行时的消息类型和数量发生变化时。本文介绍了一种新的混合时间模型,用于在有限的时间窗口内对消息的时间进行运行时预测。通过将时间作为优化约束,可以使用模型预测控制的优化算法设计控制器。该时间模型允许多个控制器共享CAN而不会显著降低控制器性能。该时间模型还提供了一种方便的方法,在运行时检查CAN上消息的可调度性。仿真结果表明,该时间模型是准确且计算高效的,能够满足实时实现的需求。仿真结果还表明,考虑时间约束设计的模型预测控制器比不考虑时间约束的控制器性能更优。

英文摘要:

When multiple model predictive controllers are implemented on a shared control area network (CAN), their performance may degrade due to the inhomogeneous timing and delays among messages. The priority based real-time scheduling of messages on the CAN introduces complex timing of events, especially when the types and number of messages change at runtime. This paper introduces a novel hybrid timing model to make runtime predictions on the timing of the messages for a finite time window. Controllers can be designed using the optimization algorithms for model predictive control by considering the timing as optimization constraints. This timing model allows multiple controllers to share a CAN without significant degradation in the controller performance. The timing model also provides a convenient way to check the schedulability of messages on the CAN at runtime. Simulation results demonstrate that the timing model is accurate and computationally efficient to meet the needs of real-time implementation. Simulation results also demonstrate that model predictive controllers designed when considering the timing constraints have superior performance than the controllers designed without considering the timing constraints.

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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