Product Form Evolutionary Design Integrated with TRIZ Contradiction Matrix

Table 6

Evaluation table of user demand attributes.

Requirement attribute	Excellent	Good	Fair	Flawed	Bad
M6	Very accurate	Easy to handle	Generally accurate	Inaccurate	Very inaccurate
M7	Very easy to recognize	Easy to recognize	Can recognize	Difficult to recognize	Fails to recognize
M8	Very good user experience without problems encountered	Convenient to use	Can operate normally	Strenuous to use	Fails to operate normally
M9	Very comfortable without pain	Comfortable	Generally comfortable	Strenuous to use	Fails to operate normally
M10	Satisfactory balance and steady grip	Fairly good balance and steady	Generally steady	Unbalanced and feels strange	Fails to operate normally
M11	Sensible, sensitive feedback, and sufficient strength	Fairly good sensitive feedback and appropriate strength	Normal feedback with minimal difference	Unsatisfied feedback with unreasonable strength	Absence of feedback
M12	Very comfortable without pain	Comfortable	Generally comfortable	Minimal comfort	Very uncomfortable
M13	Very convenient	Fairly convenient	Fairly good	Difficult to adjust	Very inconvenient
M14	Excellent safety and relaxed and comfortable use	Fairly safe and equipped with a reminder device	Unsure of its safety	Time may be excessively long and unsafe	Seems very unsafe
M15	Very smart	Fairly smart	Neutral	Not smart	Not smart at all