Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content SysML Activity extension stereotypes - REFERENCE CARD Source OMG Systems Modeling Language (SysML) 1.6 Copyright information About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes UML keywords Behavior Operation SysML keywords ControlOperator Previous snippet Full quote A control operator is a behavior that is intended to represent an arbitrarily complex logical operator that can be used to enable and disable other actions. ... The «controlOperator» stereotype also applies to operations with the same semantics. Next snippet When the «controlOperator» stereotype is applied to behaviors, the behavior takes control values as inputs or provides them as outputs, that is, it treats control as data Related snippets Related snippets (backlinks) When the «controlOperator» stereotype is not applied, the behavior may not have a parameter typed by ControlValue. The control value inputs do not enable or disable the control operator execution based on their value, they only enable based on their presence as data. Pins for control parameters are regular pins, not UML control pins. This is so the control value can be passed into or out of the action and the invoked behavior, rather than control the starting of the action, or indicating the ending of it. Brake pressure information also flows to a control operator that outputs a control value to enable or disable the Monitor Traction behavior. No pins are used on Monitor Traction, so once it is enabled, the continuously arriving enable control values from the control operator have no effect, per UML semantics. When the brake pressure goes to zero, disable control values are emitted from the control operator. The first one disables the monitor, and the rest have no effect. While the monitor is enabled, it outputs a modulation frequency for applying the brakes as determined by the ABS system. The rake notations on the control operator and Monitor Traction indicate they are further defined by activities, as shown in Figure 11-11 and Figure 11-12. An alternative notation for this activity decomposition is shown in Figure 11-13. Visit also Visit also (backlinks) Flags
