we can do the math simply enough and see when the power/size relationship violates a constraint; but in a more complex set of constraints we might want to set up the constraint network and allow a constraint solver to warn us when one of the constraints is violated.17
We can see then, that parametrics in SysML provide us powerful capabilities for reasoning about
Summary of SysML basics
In this chapter we have discussed some of the different capabilities that SysML offers to system engineers and product designers. SysML is aimed at supporting the conceptual stage of the life cycle of the product. This stage is preceded by the decomposition of the customer needs into product features. We have seen that SysML allows the representation of these features as requirements in the model. In turn, these requirements can be allocated to the use cases, to the
The conceptual stage requires the specification of the various
In addition to structure, the conceptual stage should clarify how the product behavior is expressed through the interaction of its components. For example, behavior modeling gives a detailed description of the product use cases. SysML provides three means for explicating the product behavior, namely interactions, state machine and activities. These three mechanisms are built as a unified behavior concept and can consequently be orchestrated in a single, uniform and complex behavior model for the whole product.
A complex product model is form by several
17A simple example of how this can be done is provided by S.V. Hovater in Implementing a
