隐性扰动下智能车间资源重调度决策方法研究

Decision method for intelligent workshop resource rescheduling under implicit disturbance

  • 摘要: 针对智能制造车间资源重调度快速响应的需求,以及隐性扰动难以测量捕捉的特点,提出了车间资源监测及重调度决策方法。首先利用支持向量机良好的连续监测性能,建立了资源异常状态监测模型;其次通过结合lasso回归算法和K近邻值分类算法提高SVM模型的预测值精准度,利用数据替代手段构建容错机制,保证系统异常时的短暂平稳运行;然后设计了车间资源重调度方式,通过历史案例数据训练分类器用于重调度方案抉择,指导智能制造车间在隐性扰动情况下的高效生产;最后,以实际车间隐性扰动为例,验证了所提的重调度决策方法的有效性。

     

    Abstract: In order to meet the requirement of rapid response of resource rescheduling in intelligent manufacturing shop and the characteristics of invisible disturbance difficult to measure and capture, a decision-making method of resource monitoring and rescheduling in intelligent manufacturing shop was proposed. Firstly, a resource abnormal state monitoring model is established based on the good continuous monitoring performance of support vector machine. Secondly, the accuracy of SVM model was improved by combining Lasso regression algorithm and K-nearest neighbor value classification algorithm, and the fault-tolerant mechanism was constructed by data substitution method to ensure the transient smooth operation of the system in case of anomalies. Then, the workshop resource rescheduling method is designed, and the classifier is trained for rescheduling scheme selection by historical case data to guide the efficient production of intelligent manufacturing workshop under the condition of invisible disturbance. Finally, the effectiveness of the proposed rescheduling decision method is verified by an example of actual workshop invisible disturbance.

     

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