扰动环境下调度命令有序度与驱动方式研究

Reactive Scheduling Mode and Order Degree Evaluation of Dispatching Command in a Disturbed Environment

为更进一步丰富扰动环境下作业车间精细管理与优化控制理论研究,提出一种基于调度命令有序度的反应式调度驱动方式。对扰动传播源与生产活动间的影响关系传播链进行分析,揭示扰动在生产过程中的传播规律与强度。综合考虑节点自修复能力,扰动传播机制和内部随机噪声综合作用,建立基于灾害蔓延动力学的扰动传播模型。引入信息熵理论构建扰动环境下系统调度命令有序度的评价模型。综合考虑扰动对原调度方案有序度的影响,提出基于调度命令有序度的反应式调度驱动方式。验证不同扰动情况下,基于不同调度命令有序度的调度驱动方式和基于周期性重调度、基于事件驱动重调度的方式在不同调度指标下的实验性能。结果表明:这里所提的调度驱动方式在各个调度性能指标上表现稳定良好,综合表现优于固定的单一调度驱动方式。

In order to enrich the theoretical research on job shop lean management and to provide optimal control in a disturbed environment,a reactive scheduling mode based on the order degree evaluation of the dispatching command is proposed.The propagation chain of the influence relationship between the source of the disturbance and the production activities is analyzed.The dissemination and intensity of the disturbance in the production process are assessed.A dynamic model of disturbance propagation based on the disaster propagation dynamics is established by considering the self-repair ability of the dynamics nodes,the propagation mechanism of the disturbance and the efects of internal random noise.Information entropy theory is used to establish an evaluation model of the order degree of the system's dispatching command in uncertain environment.The degree of influence of the disturbance on the order degree of the original scheduling scheme is considered and a reactive scheduling method based on the order degree of the scheduling commands is proposed.To verify the experimental performance of scheduling mode based on the different order degree of the dispatching command and periodic rescheduling and event-driven rescheduling under different scheduling indexes under different disturbance conditions.The results show that the scheduling-driven method proposed performs stably and well on various scheduling performance indicators,and its overall performance is better than the fixed single scheduling-driven method.