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| Statistisk processtyrning× | Quality Function Deployment× | |
|---|---|---|
| Ämnesområde | Försöksplanering | Försöksplanering |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1924–1931 | 1966 (Japan); popularised in the West ~1988 |
| Upphovsperson≠ | Walter A. Shewhart | Yoji Akao |
| Typ≠ | Process monitoring and quality control method | Structured quality planning and product design method |
| Ursprungskälla≠ | Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. ISBN: 978-0873890762 | Akao, Y. (Ed.). (1990). Quality Function Deployment: Integrating Customer Requirements into Product Design. Productivity Press. ISBN: 978-0915299416 |
| Alias | SPC, statistical quality control, process control charting, Shewhart control | QFD, House of Quality, customer-driven engineering, voice of the customer matrix |
| Närliggande≠ | 6 | 4 |
| Sammanfattning≠ | Statistical Process Control (SPC) is a data-driven quality method that uses statistical techniques — primarily control charts — to monitor a manufacturing or service process over time. By distinguishing natural process variation (common cause) from unusual, actionable variation (special cause), SPC enables practitioners to maintain processes in a stable, predictable state and to detect problems early, before defective output reaches customers. | 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. |
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