TY: CONF T1 - Requirements Specification for Controller Design-from Use Cases to IOPT Net Models A1 - Barros, Joćo Paulo A1 - Brito, Isabel Sofia A1 - Gomes, Luis N2 - Non-autonomous Petri nets offer a language especially adapted for controller specifications. They are typically used in the design phase often with no clear connection to the analysis phase, including requirements specification. This paper shows how use cases can be used to support requirements specification amenable to a direct transformation to IOPT nets, a class of non-autonomous Petri nets. To that end, we propose a set of semi-formal rules for use case descriptions, including use case relationships, which take advantage of the concepts available in IOPT nets, namely input and output signals and events and net addition, a net composition operation. UR - https://repositorio.ipbeja.pt/handle/20.500.12207/4374 Y1 - 2014 PB - IEEE