北大中文核心期刊
中国科学引文数据库(CSCD)来源期刊
中国科技核心期刊
入选数学领域高质量科技期刊
Scopus
EBSCO
运筹学学报 ›› 2021, Vol. 25 ›› Issue (4): 15-30.doi: 10.15960/j.cnki.issn.1007-6093.2021.04.002
收稿日期:2020-01-31
出版日期:2021-12-15
发布日期:2021-12-11
通讯作者:
唐应辉
E-mail:tangyh@sicnu.edu.cn
作者简介:唐应辉 E-mail: tangyh@sicnu.edu.cn基金资助:Received:2020-01-31
Online:2021-12-15
Published:2021-12-11
Contact:
Yinghui TANG
E-mail:tangyh@sicnu.edu.cn
摘要:
本文考虑两类具有N-策略和服务员单重休假的M/G/1排队系统,其中一类是休假不可中断,另一类是休假可中断。利用系统稳态队长的随机分解特性导出稳态队长的概率母函数,并讨论了系统空闲率与附加平均队长对系统一些参数的敏感性。进一步,在建立费用结构的基础上,应用更新报酬过程理论导出了系统长期运行单位时间内所产生的成本期望费用的显示表达式,同时通过数值计算实例确定了使得系统在长期运行单位时间内所产生的成本期望费用最小的控制策略N*,以及当休假时间为定长T时的二维最优控制策略(N*,T*)。
中图分类号:
唐蓓蕾, 唐应辉. 两类具有N-策略和单重休假的M/G/1排队系统的最优控制策略[J]. 运筹学学报, 2021, 25(4): 15-30.
Beilei TANG, Yinghui TANG. Optimal control strategies for two types of M/G/1 queueing systems with N-strategy and single vacation[J]. Operations Research Transactions, 2021, 25(4): 15-30.
表1
$ \lambda = 0.85, \theta = 0.3, \rho = 0.3 $ 时, $ {p}_{\mbox{ 0, 模 1}} $ 和$ {p}_{\mbox{ 0, 模 2}} $ 随$ N $ 的变化情况"
| 1 | 0.226 2 | 0.700 0 | 11 | 0.063 1 | 0.233 9 | |
| 2 | 0.197 3 | 0.452 7 | 12 | 0.058 0 | 0.231 9 | |
| 3 | 0.168 9 | 0.359 0 | 13 | 0.053 6 | 0.230 4 | |
| 4 | 0.144 5 | 0.311 3 | 14 | 0.049 9 | 0.229 3 | |
| 5 | 0.124 4 | 0.283 5 | 15 | 0.046 6 | 0.228 5 | |
| 6 | 0.108 3 | 0.265 9 | 16 | 0.043 7 | 0.227 9 | |
| 7 | 0.095 3 | 0.254 3 | 17 | 0.041 1 | 0.227 5 | |
| 8 | 0.084 8 | 0.246 3 | 18 | 0.038 9 | 0.227 1 | |
| 9 | 0.076 2 | 0.240 7 | 19 | 0.036 8 | 0.226 9 | |
| 10 | 0.069 0 | 0.236 8 | 20 | 0.035 0 | 0.226 7 |
表2
$ \lambda = 0.85, \theta = 0.3, \rho = 0.9 $ 时, $ {p}_{\mbox{ 0, 模 1}} $ 和$ {p}_{\mbox{ 0, 模 2}} $ 随$ N $ 的变化情况"
| 1 | 0.032 3 | 0.100 0 | 11 | 0.009 0 | 0.033 4 | |
| 2 | 0.028 2 | 0.064 7 | 12 | 0.008 3 | 0.033 1 | |
| 3 | 0.024 1 | 0.051 3 | 13 | 0.007 7 | 0.032 9 | |
| 4 | 0.020 6 | 0.044 5 | 14 | 0.007 1 | 0.032 8 | |
| 5 | 0.017 8 | 0.040 5 | 15 | 0.006 7 | 0.032 6 | |
| 6 | 0.015 5 | 0.038 0 | 16 | 0.006 2 | 0.032 6 | |
| 7 | 0.013 6 | 0.036 3 | 17 | 0.005 9 | 0.032 5 | |
| 8 | 0.012 1 | 0.035 2 | 18 | 0.005 6 | 0.032 4 | |
| 9 | 0.010 9 | 0.034 4 | 19 | 0.005 3 | 0.032 4 | |
| 10 | 0.009 9 | 0.033 8 | 20 | 0.005 0 | 0.032 4 |
表3
$ \lambda = 0.85, \theta = 0.3 $ 时$ {\overline{L}}_\mbox{ d, 模 1} $ 和$ {\overline{L}}_\mbox{ d, 模 2} $ 随$ N $ 的变化情况"
| 1 | 2.594 5 | 0.000 0 | 11 | 5.081 1 | 2.211 7 | |
| 2 | 2.390 6 | 0.353 3 | 12 | 5.558 2 | 2.289 1 | |
| 3 | 2.334 4 | 0.694 3 | 13 | 6.041 9 | 2.351 9 | |
| 4 | 2.430 7 | 1.000 3 | 14 | 6.530 3 | 2.402 5 | |
| 5 | 2.648 2 | 1.268 3 | 15 | 7.021 9 | 2.443 2 | |
| 6 | 2.952 8 | 1.499 5 | 16 | 7.515 9 | 2.475 6 | |
| 7 | 3.317 8 | 1.696 5 | 17 | 8.011 6 | 2.501 4 | |
| 8 | 3.724 3 | 1.862 7 | 18 | 8.508 4 | 2.521 8 | |
| 9 | 4.159 1 | 2.001 7 | 19 | 9.006 1 | 2.537 8 | |
| 10 | 4.613 3 | 2.116 9 | 20 | 9.504 5 | 2.550 5 |
表4
$ \lambda = 0.85, \theta = 1.2 $ 时$ {\overline{L}}_\mbox{ d, 模 1} $ 和$ {\overline{L}}_\mbox{ d, 模 2} $ 随$ N $ 的变化情况"
| 1 | 0.387 8 | 0.000 0 | 11 | 5.000 0 | 0.266 4 | |
| 2 | 0.626 7 | 0.115 7 | 12 | 5.500 0 | 0.266 5 | |
| 3 | 1.044 8 | 0.191 4 | 13 | 6.000 0 | 0.266 5 | |
| 4 | 1.516 7 | 0.231 6 | 14 | 6.500 0 | 0.266 5 | |
| 5 | 2.006 4 | 0.251 0 | 15 | 7.000 0 | 0.266 5 | |
| 6 | 2.502 5 | 0.259 8 | 16 | 7.500 0 | 0.266 5 | |
| 7 | 3.001 0 | 0.263 7 | 17 | 8.000 0 | 0.266 5 | |
| 8 | 3.500 4 | 0.265 3 | 18 | 8.500 0 | 0.266 5 | |
| 9 | 4.000 2 | 0.266 0 | 19 | 9.000 0 | 0.266 5 | |
| 10 | 4.500 1 | 0.266 3 | 20 | 9.500 0 | 0.266 5 |
表5
$ \lambda = 0.85, \theta = 0.3, R = 100, h = 5, \rho = 0.3 $ 时, $ {{F}}_\mbox{ 模 1} $ 和$ {{F}}_\mbox{ 模 2} $ 随$ N $ 的变化情况"
| 1 | 34.344 7 | 61.642 9 | 11 | 32.907 7 | 33.085 7 | |
| 2 | 30.866 2 | 42.388 0 | 12 | 34.861 4 | 33.297 5 | |
| 3 | 28.172 5 | 36.125 3 | 13 | 36.909 9 | 33.484 1 | |
| 4 | 26.575 7 | 33.605 7 | 14 | 39.031 8 | 33.644 2 | |
| 5 | 32.581 6 | 15 | 41.211 1 | 33.779 1 | ||
| 6 | 26.114 5 | 32.244 7 | 16 | 43.435 9 | 33.891 1 | |
| 7 | 26.836 7 | 17 | 45.697 2 | 33.983 1 | ||
| 8 | 27.974 3 | 32.393 9 | 18 | 47.988 2 | 34.057 9 | |
| 9 | 29.415 1 | 32.614 7 | 19 | 50.303 6 | 34.118 2 | |
| 10 | 31.078 6 | 32.853 8 | 20 | 52.639 2 | 34.166 5 |
表6
$ \lambda = 0.85, \theta = 0.3, R = 100, h = 5, \rho = 0.6 $ 时, $ {{F}}_\mbox{ 模 1} $ 和$ {{F}}_\mbox{ 模 2} $ 随$ N $ 的变化情况"
| 1 | 31.460 6 | 41.500 0 | 11 | 35.968 0 | 29.920 9 | |
| 2 | 29.036 0 | 31.254 3 | 12 | 38.106 8 | 30.207 8 | |
| 3 | 27.376 3 | 28.406 3 | 13 | 40.313 9 | 30.449 0 | |
| 4 | 27.622 3 | 14 | 42.572 9 | 30.649 1 | ||
| 5 | 26.785 3 | 15 | 44.871 7 | 30.813 2 | ||
| 6 | 27.525 5 | 27.914 2 | 16 | 47.201 5 | 30.946 7 | |
| 7 | 28.720 4 | 28.333 9 | 17 | 49.555 8 | 31.054 5 | |
| 8 | 30.241 4 | 28.777 9 | 18 | 51.929 7 | 31.140 9 | |
| 9 | 31.996 4 | 29.201 9 | 19 | 54.319 3 | 31.209 9 | |
| 10 | 33.920 5 | 29.585 4 | 20 | 56.721 8 | 31.264 5 |
表7
$ \lambda = 0.85, \theta = 0.3, R = 100, h = 5, \rho = 0.9 $ 时, $ {{F}}_\mbox{ 模 1} $ 和$ {{F}}_\mbox{ 模 2} $ 随$ N $ 的变化情况"
| 1 | 60.719 4 | 53.500 0 | 11 | 71.171 1 | 58.899 0 | |
| 2 | 59.348 6 | 12 | 73.495 0 | 59.261 0 | ||
| 3 | 52.830 1 | 13 | 75.860 7 | 59.556 8 | ||
| 4 | 58.907 9 | 53.781 8 | 14 | 78.256 8 | 59.796 8 | |
| 5 | 59.752 0 | 54.784 0 | 15 | 80.675 1 | 59.990 2 | |
| 6 | 61.079 3 | 55.726 6 | 16 | 83.110 0 | 60.145 2 | |
| 7 | 62.747 0 | 56.570 4 | 17 | 85.557 3 | 60.268 8 | |
| 8 | 64.651 4 | 57.304 8 | 18 | 88.013 9 | 60.366 9 | |
| 9 | 66.720 6 | 57.931 9 | 19 | 90.477 8 | 60.444 4 | |
| 10 | 68.905 1 | 58.459 8 | 20 | 92.947 2 | 60.505 4 |
表8
$ \lambda = 0.85, \rho = 0.3, R = 100, h = 5 $ 时, $ {{F}}_\mbox{ 模 1} $ 随$ N $ 与$ T $ 的变化情况"
![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 0 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.559 5 | 25.642 9 | 27.080 4 | |
| 0.000 1 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 5 | 25.642 9 | 27.080 4 |
| 0.000 2 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 5 | 25.642 9 | 27.080 4 |
| 0.000 3 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 5 | 25.642 9 | 27.080 4 |
| 0.000 9 | 61.642 8 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 5 | 25.642 9 | 27.080 4 |
| 0.001 | 61.642 8 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 5 | 25.642 9 | 27.080 4 |
| 0.1 | 61.452 6 | 34.391 8 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 5 | 25.642 9 | 27.080 4 |
| 1 | 50.135 3 | 33.697 8 | 26.937 0 | 24.517 0 | 24.043 1 | 24.559 6 | 25.642 9 | 27.080 4 |
| 2 | 37.584 3 | 31.264 6 | 26.643 2 | 24.510 8 | 24.052 2 | 24.563 0 | 25.643 7 | 27.080 5 |
| 4 | 27.890 1 | 27.039 2 | 25.748 1 | 24.675 2 | 24.314 4 | 24.718 5 | 25.712 8 | 27.106 4 |
| 8 | 27.888 6 | 27.862 2 | 27.783 1 | 27.640 7 | 27.492 6 | 27.477 3 | 27.759 4 | 28.448 0 |
表9
$ \lambda = 0.85, \rho = 0.3, R = 100, h = 5 $ 时, $ {{F}}_{\mbox{ 模 2}} $ 随$ N $ 与$ T $ 的变化情况"
![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1 | 61.642 9 | 52.210 9 | 50.471 5 | 50.180 6 | 50.140 3 | 50.135 8 | 50.135 3 | 50.135 3 |
| 4 | 61.642 9 | 36.552 1 | 30.139 9 | 28.197 5 | 27.715 1 | 27.692 9 | 27.768 7 | 27.831 9 |
| 10 | 61.642 9 | 34.419 2 | 27.035 1 | 24.611 5 | 24.143 6 | 24.588 4 | 25.455 7 | 26.468 1 |
| 16 | 61.642 9 | 34.393 1 | 26.977 0 | 24.519 6 | 24.045 1 | 24.558 5 | 25.626 7 | 27.021 5 |
| 19 | 61.642 9 | 34.392 9 | 26.976 3 | 24.518 1 | 24.043 1 | 24.559 3 | 25.639 5 | 27.066 9 |
| 20 | 61.642 9 | 34.392 9 | 26.976 2 | 24.518 | 24.043 0 | 24.559 4 | 25.641 0 | 27.072 4 |
| 20.6 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.043 0 | 24.559 4 | 25.641 5 | 27.074 6 |
| 20.635 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.043 0 | 24.559 4 | 25.641 5 | 27.074 7 |
| 20.638 5 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.043 0 | 24.559 4 | 25.641 5 | 27.074 7 |
| 20.638 6 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.043 0 | 24.559 4 | 25.641 5 | 27.074 7 |
| 20.638 7 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.559 4 | 25.641 5 | 27.074 7 | |
| 20.64 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 4 | 25.641 5 | 27.074 7 |
| 20.7 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 4 | 25.641 6 | 27.074 9 |
| 21 | 61.642 9 | 34.392 9 | 26.976 2 | 24.517 9 | 24.042 9 | 24.559 4 | 25.641 8 | 27.075 7 |
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