不可靠制造系统的一种控制策略的参数最优化

Parameter Optimization of a Control Policy for Unreliable Manufacturing Systems*

中文关键词  制造系统  扰动分析  无偏估计  阈值控制

英文关键词  manufacturing system  perturbation analysis  unbiased estimate  threshold control

中文摘要

      本文研究生产单类工件的两台串级机器的系统，机器是不可靠的．系统采用Surplus Control策略，该策略以每台机器的一个阈值作为控制参数．基干扰动分析方法，我们提出了一种简单的算法用于估计系统费用函数对于控制参数的梯度，并证明了估计的无偏性，仿真例子验证了算法的有效性．

英文摘要

      We study a tandem two machine system producing one part type. The machines are subject to failures. A policy called surplus control which features two threshold levels，each for one machine, is used to regulate the production. We propose a simple algorithm based on perturbation analysis techniques to estimate the gradient of a cost functional. It is proved that this estimate is unbiased. Examples are given to demonstrate tho algorithm.