The DFSS methodology begins by finding and analysing the gaps in processes that are negatively affecting new product performance. It also focuses on customer response to the product. Once this has been completed the project to tackle the problems can be established.
The process for solving problems is called DMADV i.e. Define, Measure, Analyse, Design and Verify or sometimes it is called PIDOV i.e. Plan, Identify, Design, Optimise and Validate. Other acronyms include: DMADOV; DMCDOV; DCOV; DCCDI; DMEDI; DMADIC; ICOV and RCI.
Although these approaches differ in some respects they all basically follow similar steps to achieve similar goals. Essentially they are approaches to designing products, services and processes to reduce delivery time and development costs, increase effectiveness and better satisfy customers.
The basic procedure is outlined as follows:
• Capture customer requirements;
• Analyse and prioritise requirements;
• Develop design;
• Flow down requirements from the system level to sub-systems, components and processes;
• Track the product capability at each step;
• Highlight any gaps between requirements and capabilities and make these actionable; and
• Establish a control plan.
The methodologies mentioned above have the same objectives and are both rigorous in nature; their only real difference is in terminology. DMADV will be the system upon which this module will focus.