مقایسهٔ روشها
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| نمودار کنترلی× | استقرار وظیفه کیفی× | |
|---|---|---|
| حوزه | طراحی آزمایش | طراحی آزمایش |
| خانواده | Process / pipeline | Process / pipeline |
| سال پیدایش≠ | 1924 (first use); 1931 (seminal book) | 1966 (Japan); popularised in the West ~1988 |
| پدیدآور≠ | Walter A. Shewhart (Bell Labs) | Yoji Akao |
| نوع≠ | Statistical monitoring and control technique | Structured quality planning and product design method |
| منبع بنیادین≠ | Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. link ↗ | Akao, Y. (Ed.). (1990). Quality Function Deployment: Integrating Customer Requirements into Product Design. Productivity Press. ISBN: 978-0915299416 |
| نامهای دیگر | Shewhart chart, process-behavior chart, SPC chart, quality control chart | QFD, House of Quality, customer-driven engineering, voice of the customer matrix |
| مرتبط≠ | 6 | 4 |
| خلاصه≠ | A control chart is a time-series graph with statistically derived upper and lower control limits that separates the natural, random variation of a process (common cause) from unusual, assignable variation (special cause). Invented by Walter Shewhart at Bell Labs in 1924, control charts remain the foundational tool of Statistical Process Control and are used across manufacturing, healthcare, software, and service industries to monitor whether a process remains stable and predictable over time. | Quality Function Deployment (QFD) is a structured method for translating customer needs — the voice of the customer — into specific technical requirements at every stage of product or service development. Originating in Japan in the 1960s, QFD uses a matrix-based tool called the House of Quality to make customer priorities visible, link them to engineering parameters, expose trade-offs, and maintain focus on what customers actually value throughout the design process. |
| ScholarGateمجموعهداده ↗ |
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