硬优先级控制分配:优先级反转现象的处理

IF 2 Q2 AUTOMATION & CONTROL SYSTEMS
Igor Novais;Matheus Marinatto;Fernando Lizarralde;Alessandro Jacoud Peixoto
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引用次数: 0

摘要

本文提出了一种新的任务优先级系统的硬优先级控制分配算法,该算法基于一种保证严格任务优先级的递归可行域交叉算法。硬优先级解决了优先级反转现象的关键限制,这种现象出现在一类众所周知的任务优先级方法中,称为软优先级算法。对于一般情况,最坏情况下的计算代价与任务数量呈线性关系。此外,通过水下航行器速度闭环控制的实例研究,评估了软优先级和硬优先级方法,表明纠正优先级反转现象可以改善主任务的瞬态性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hard Prioritization Control Allocation: Dealing With the Priority Inversion Phenomenon
This letter proposes the novel hard prioritization control allocation algorithm for systems with task priorities based on a recursive feasible region intersection algorithm that guarantees strict task priority. Hard prioritization addresses the key limitation of the priority inversion phenomenon that arises in a well-known class of task prioritization methods, referred to as soft prioritization algorithms. The worst-case computational cost is shown to be linear with respect to the number of tasks for a generic case. Furthermore, soft and hard prioritization approaches are evaluated through a case study of velocity closed-loop control of an underwater vehicle, demonstrating that correcting the priority inversion phenomenon could improve the transient performance of the primary task.
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来源期刊
IEEE Control Systems Letters
IEEE Control Systems Letters Mathematics-Control and Optimization
CiteScore
4.40
自引率
13.30%
发文量
471
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