Application of SysML to design of ATCA based LLRF control system

Using SysML in Systems Design

“…Also, the first author, who was the responsible for the design had only a reduced knowledge of UML. Although some previous knowledge of UML can be useful to overcome initial doubts in SysML, it appears from this limited experience that its presence is far from required and so we do not agree with [4] in this respect. Even with that knowledge, new challenges are presented in the form of the new SysML diagrams and elements that can be used, and of the system domain.…”

“…Although it can be considered as a simple language, since its specification doesn't define any methodology and the language doesn't require one of those to be actually used, it can lead to potential problems and errors. According our experience with this case study, the use of a methodology as pointed in [4] is required. Its possible definition in the language's specification should not be ignored.…”

“…The authors of [4] shows that the integration of UML 2.0 diagrams, with none or little change in SysML, may lead to learning difficulties for those who don't have any UML background knowledge. Although the models can be read without great effort, its creation requires greater knowledge of the language itself.…”

“…Although the models can be read without great effort, its creation requires greater knowledge of the language itself. Also in [4] it is referred that the implementation of a given system, led to the conclusion that, by combining SysML with system engineering methodologies, the results achieved were very interesting. Since this was basically a European effort, the communication between universities, research labs and industries played a major role in the final outcome of the project.…”

“…Other aspect referred in [4] and that may cause some problems to users is the frequency of the updates made to the language. In 6 months, until the launch of the language in April 2006, 4 intermediate updates were launched.…”