Mattmann, Ilyas ; Gramlich, Sebastian ; Kloberdanz, Hermann (2015):
Shedding Light on Customer Requirement Specifications, Functional Specifications and Requirements Lists - How Engineers Learn the Correct Documentation of Requirements.
In: Proceedings of the CEEA 2015 6th Annual Conference,
Hamilton, Ontario, Kanada, CEEA 2015 Conference, McMaster University, Hamilton, Ontario, Kanada, 1.-3. Juni 2015, [Conference or Workshop Item]

Abstract

Engineering students face a confusion of requirements and product properties during task clarifi-cation in product development projects. As requirements are mainly documented in the form of desired product properties, customer needs and expectations may not be sufficiently considered during the development of new and innovative products.

This paper presents the results of a systematic litera-ture analysis of existing requirement documentation forms and analyses the documentation process as it is taught to engineering students. Requirements are often documented through a tripartite process of translating customer ex-pectations from the customer requirement specification to the functional specification, while the requirements list provides the base for the product development process. The contents of these documents appear theoretically different, however, they are barely distinguishable from each other in practice.

Therefore, the paper provides a new model-based un-derstanding for the documentation of requirements through gradual concretisation of requirements during the product development process, leading gradually from customer needs and expectations to requirements. Engi-neering students must be able to gradually concretise requirements then document desired product properties to avoid early fixation on specific product properties. Un-dergraduate and graduate engineering students should be taught to consider requirements according to the pro-posed approach as it enables prospective engineers al-ready in the early phases of their engineering education to design highly complex technical products. Thus, the model provides a valuable base for formally supported requirements documentation and the systematic determi-nation of product properties.

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