CONWIP拉式供應鏈系統之模擬研究

A Simulation Study of CONWIP Supply Chain System

曾文宏(Wen-Hung Tseng) ； 邱清爐(Chin-Lu Chyu) ； 陳淑玲(Shu-Ling Chen) ； 林高正(Kao-Cheng Lin)

《管理資訊計算》 7卷特刊2 (2018/08) Pp. 188-199

https://doi.org/10.6285/MIC.201808_7(S2).0019

摘要

本研究探討在單一產品的環境下，建構CONWIP(Constant Work-In-Process)拉式供應鏈系統的模擬模型，透過模擬實驗結果來評估分析CONWIP 拉式供應鏈在服務水準為90%時的定量存貨水準。系統績效的主要衡量指標：存貨水準、產出率與週期時間。模擬實驗結果顯示，在90%服務水準下，供應鏈各階層作業時間為均勻分配時，定量存貨水準為257 單位，而供應鏈各階層作業時間為變異較大的指數分配時，定量存貨水準為554 單位。

關鍵字

供應鏈 ； 拉式系統 ； CONWIP系統 ； 系統模擬

並列摘要

This research studies the performance of CONWIP supply chain system, and a simulation model is established for experiments. The performance measures used to evaluate are inventory level, throughput, and cycle time. Simulation results show that at the service level of 90%, the constant inventory level is 257 units when the operation times in all stages of the supply chain are uniformly distributed, and the constant inventory level is 554 units when the operation times in all stages of the supply chain are exponentially distributed.

並列關鍵字

Supply Chain ； Pull System ； CONWIP System ； System Simulation

參考文獻

Hopp, W. J. and Roof, M. L. (1998). Setting WIP levels with Statistical Throughput Control (STC) in CONWIP production lines. International Journal of Production Research, 13(1), 867-882. doi: 10.1080/002075498193435

Little, J. D. C. (1961). A Proof for the Queuing Formula: L=λW. Operations Research, 9(3), 383-387. doi: 10.1287/opre.9.3.383

Ovalle, O. R., and Marquez, A. C. (2003). Exploring the utilization of a CONWIP system for supply chain management. A comparison with fully integrated supply chains. International Journal of Production Economics Volume, 83(2), 195-215. doi: 10.1016/S0925-5273(02)00328-6

Pyke, D. F. and Cohen, M. A. (1990). Push and Pull in Manufacturing and Distribution Systems. Journal of Operational Management, 9(1), 24-43. doi: 10.1016/0272-6963(90)90144-3

Spearman, M. L., Wooduruff, D. L., and Hopp, W. J. (1990). CONWIP: a pull alternative to Kanban. International Journal of Production Research, 28(5), 879-894. doi: 10.1080/00207549008942761