What is Synchronous Technology in CAD ?

Synchronous technology is a latest development in digital product design introduced by Siemen's PLM software. It provides the first history-free, feature-based modeling technology that accelerates design process.

Parametric feature-based modeling is very powerful in editing and modifying CAD models, but it does not help much in case of dump solids or imported models from other CAD software. In this case, the essential method was direct editing (also known as explicit modeling).

Synchronous technology combines the best of constraint driven techniques with direct modeling methods. The unparametric models imported from other software can be edited quickly. The CAD user can take an existing model (native or imported), make changes to it with no limitations from the history tree, and add new intelligence (constraints and driving dimensions) to the model. Model reuse and editing will be faster and simpler even for a less skilled CAD operator.

The word “synchronous” doesn’t refer to a modeling process, but refers to a computer algorithm which solves a group of mathematical equations known as “synchronous solver”.

Sequential solvers are the oldest and simplest type. They have the limitation of order dependency.

Simultaneous solvers are more advanced used in today’s parametric feature based modelers. They solve all equations representing the constraints (including relationships and dimensions) defining a feature simultaneously, as a group.

Siemen’s synchronous solver overcomes the order dependencies by solving for the explicit and inferred constraints at the same time. This solver doesn’t use a history tree, but rather holds user-defined constraints in groups associated with the surfaces o which they apply.

The synchronous solver does a lot more than a typical simultaneous solver.

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