เปรียบเทียบวิธี

	SMED	การวางแผนรวม (Aggregate Planning)
สาขาวิชา	การจัดการการดำเนินงาน	การจัดการการดำเนินงาน
ตระกูล	Machine learning	Machine learning
ปีกำเนิด	1985	1992
ผู้ริเริ่ม	Shigeo Shingo	Wallace, T. F.
ประเภท	Setup time reduction technique	Demand-supply planning framework
แหล่งต้นตำรับ	Shingo, S. (1985). A revolution in manufacturing: The SMED system. Cambridge, MA: Productivity Press.	Wallace, T. F. (1992). Sales & Operations Planning: The how-to handbook. Cincinnati: APICS Publications.
ชื่อเรียกอื่น	quick changeover, rapid setup	sales and operations planning, production planning
ที่เกี่ยวข้อง	5	5
สรุป	Single Minute Exchange of Die (SMED) is a systematic approach developed by Shigeo Shingo in the 1980s to drastically reduce the time required to changeover equipment from producing one product to another. The methodology, part of the Toyota Production System, aims to reduce setup time to a single-digit minute range (ideally under nine minutes), enabling smaller batch sizes, faster response to customer demand, and improved flexibility in manufacturing. SMED is a cornerstone of lean manufacturing and just-in-time production.	Aggregate Planning (or Sales & Operations Planning, S&OP) is a collaborative, iterative process that balances demand and supply at a high level—typically grouping products into families and planning over a 3–18 month horizon. Developed formally by Tom Wallace and popularized through APICS, aggregate planning helps organizations align sales forecasts, production capacity, inventory, and workforce to meet demand efficiently while managing costs. It serves as the bridge between strategic business plans and detailed operational execution.