The Study of Performance Evaluation for an Order Picking System with COI-based Storage Policy

訂單揀貨系統應用COI儲位指派策略的績效評估之研究

施伯勳(Po-Hsun Shih) ； 潘昭賢(Jason Chao-Hsien Pan) ； 石代維(Tai-Wei Shih)

《嶺東通識教育研究學刊》 9卷3期 (2022/02) Pp. 21-49

摘要

This paper develops an order throughput time evaluation model for a symmetrical warehousing system incorporating the COI-based storage policy, with traversal and return routing strategies. The first and second moments of the order picker's service time are derived and applied into an E_k/G/1 queueing network for estimating the expected order throughput time accurately. The results generated by the model are compared and validated via the eM-Plant simulation package. The results show that the proposed model can provide sufficiently accurate evaluations of the warehousing system performance for practical purposes. Furthermore, the provided model can be used to determine the optimal number of orders in a batch and analyze the effects of popularity skewness and warehouse layout on the order throughput time.

關鍵字

Order picking ； Queueing network ； warehouse management

並列摘要

本文目的旨在針對採用COI儲位指派，與穿越及折返式行走路徑之對稱式倉儲揀貨系統發展訂單處理時間之評估模型。實務上，倉儲系統是多人同時於同一區域內進行揀貨，因此，等候時間與行走及揀取時間必須同時納入考量。本文推導出揀貨員服務時間之第一及第二階動差，並應用於E_k/G/1等候線網路模型，以準確地估計訂單處理時間。上述模型產出結果與eM-plant模擬軟體所產生的結果相互比較，而驗證結果顯示本研究所提之模型可足夠準確評估實務上的倉儲系統效能。此外，此模型可用於決定單一批次內最佳訂單處理量，及分析儲位策略偏態系數及倉儲配置之影響。

並列關鍵字

訂單揀貨 ； 等候線網路 ； 倉儲管理

參考文獻

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