QFD / House of Quality
About QFD / House of Quality
Quality Function Deployment (QFD) and the „House of Quality“ provide a mapping of customer needs to specifications and vice versa. They provide a summary of how specifications are derived based on market needs and competitive environment.
Summarize target product profile
A table resembling the shape of a house is returned. The table summarizes all the information collected during requirements analysis and benchmarking.
QFD 1 House of Quality of VOC to CTQ. Includes Kano Analysis, VOC and CTQ Benchmarking, and Difficulty Analysis.
The QFD1 component contains not only the main worksheet in form of a House of Quality, but also many more worksheets that help you to collect and analyze your data. If inserted into an existing project, customer requirements and technical requirements collected from a Mind Map or other methods, will be connected to the House of Quality automatically.
Worksheets
The House of Quality Worksheet
The House of Quality worksheet is the main worksheet of the QFD1 component. It shows the QFD1 matrix together with benchmarking tables and the inter relationship matrix of the CTQs / Functions.
VOC
VOC - Voice of the Customer: hierarchical structure of system and customer requirements. Collect all requirements based on customer benefit. Build a structure of groups and sub-items.Importance
Importance rating for VOC. Created by one of the available prioritization methods, e.g. AHP.CTQ / Functional Requirements
CTQ - critical to quality. This is the hierarchical structure of product functions and critical technical requirements. Collect all technical requirements defining the quality of the product functions. If possible, place technical requirements inside a product function. Use and to change functions into CTQ or vice versa. Use ConstraintConstraint on technical specifications that cannot be optimized, e.g. technical standards.QFD Matrix
Does improving the Functional Requirement help to better satisfy the VOC need?CTQ Importance
Table of importance values for the CTQs / functions. Values here usually are calculated from VOC importance and the central QFD 1 matrix using the linear mapping calculation method. The chart at the bottom edge shows importance values as bar graphs.VOC Benchmarking
The columns of this table are the competitive products and the predecessor of your new product. For each VOC answer the following question: How good does the listed product (column) meet the customer requirement (row)? Use a scale from -- (non acceptable = 0) to ++ (exceeds expectations = 10). The chart at the right edge shows a line graph for each competitor.CTQ Benchmarking
The rows of this table are the competitive products and the predecessor of your new product. For each CTQ and competitor enter how good this product fullfills the technical requirement. You can use a drop down list with qualitative values (++, +, o, -, --) or enter real values. If you want to use real values, you have to edit the Scores table on worksheet CTQ Benchmarking as well. The chart at the bottom shows a line graph for each competitor.Roof
The roof of the House of Quality documents conflicts and synergies when improving CTQs.
Roadmap
Qualica Template
QFD 1 House of Quality of VOC to CTQ. Includes Kano Analysis, VOC and CTQ Benchmarking, and Difficulty Analysis.
Worksheets
The House of Quality Worksheet
The House of Quality worksheet is the main worksheet of the QFD1 component. It shows the QFD1 matrix together with benchmarking tables and the inter relationship matrix of the CTQs / Functions.
VOC
VOC - Voice of the Customer: hierarchical structure of system and customer requirements. Collect all requirements based on customer benefit. Build a structure of groups and sub-items.Importance
Importance rating for VOC. Created by one of the available prioritization methods, e.g. AHP.CTQ / Functional Requirements
CTQ - critical to quality. This is the hierarchical structure of product functions and critical technical requirements. Collect all technical requirements defining the quality of the product functions. If possible, place technical requirements inside a product function. Use and to change functions into CTQ or vice versa. Use ConstraintConstraint on technical specifications that cannot be optimized, e.g. technical standards.QFD Matrix
Does improving the Functional Requirement help to better satisfy the VOC need?CTQ Importance
Table of importance values for the CTQs / functions. Values here usually are calculated from VOC importance and the central QFD 1 matrix using the linear mapping calculation method. The chart at the bottom edge shows importance values as bar graphs.VOC Benchmarking
The columns of this table are the competitive products and the predecessor of your new product. For each VOC answer the following question: How good does the listed product (column) meet the customer requirement (row)? Use a scale from -- (non acceptable = 0) to ++ (exceeds expectations = 10). The chart at the right edge shows a line graph for each competitor.CTQ Benchmarking
The rows of this table are the competitive products and the predecessor of your new product. For each CTQ and competitor enter how good this product fullfills the technical requirement. You can use a drop down list with qualitative values (++, +, o, -, --) or enter real values. If you want to use real values, you have to edit the Scores table on worksheet CTQ Benchmarking as well. The chart at the bottom shows a line graph for each competitor.Roof
The roof of the House of Quality documents conflicts and synergies when improving CTQs.