By Claudius Ptolemaeus
This booklet is a definitive creation to types of computation for the layout of complicated, heterogeneous structures. It has a selected concentrate on cyber-physical structures, which combine computing, networking, and actual dynamics. The e-book captures greater than 20 years of expertise within the Ptolemy undertaking at UC Berkeley, which pioneered many layout, modeling, and simulation suggestions which are now in frequent use. the entire tools coated within the publication are discovered within the open resource Ptolemy II modeling framework and come for experimentation via hyperlinks supplied within the booklet. The booklet is acceptable for engineers, scientists, researchers, and bosses who desire to comprehend the wealthy percentages provided through sleek modeling thoughts. The target of the ebook is to equip the reader with a breadth of expertise that may assist in realizing the function that such suggestions can play in layout.
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Extra resources for System Design, Modeling, and Simulation Using Ptolemy II
3 of the actors in determine 2. 1 are composite actors, that means that their implementation is itself a Ptolemy II version. you could invoke the Open Actor context menu2 to bare the two A context menu is a menu that's particular to the item lower than the cursor. it really is got via correct clicking the mouse (or keep an eye on clicking, if the mouse doesn't have a correct button) whereas the cursor is over the icon. Ptolemaeus, approach layout forty-one 2. 1. GETTING all started determine 2. three: The travel of Ptolemy II web page. sign resource implementation, as proven in determine 2. five. This block diagram indicates how the sinusoidal sign is generated. forty two Ptolemaeus, procedure layout 2. construction GRAPHICAL types determine 2. four: Viewing documentation for actors. Ptolemaeus, method layout forty three 2. 1. GETTING begun determine 2. five: Invoke Open Actor on composite actors to bare their implementation. forty four Ptolemaeus, process layout 2. construction GRAPHICAL versions 2. 1. 2 growing and working a version Create a brand new version by way of picking [File→New→Graph Editor] within the menu bar. you'll want to see anything just like the window proven in determine 2. 6. The left-hand part of the web page exhibits a library of elements that may be dragged into the model-building sector. practice the stairs defined under to create an easy version. • Open the Actors library after which assets. locate the Const actor below Sources→Generic and drag an example into the model-building zone. • Open Sinks→GenericSinks and drag a exhibit actor onto the web page (see packing containers on pages forty eight and 49). model-building quarter library of elements navigation region determine 2. 6: An empty Vergil Graph Editor. Ptolemaeus, procedure layout forty five 2. 1. GETTING began • Drag a connection from the output port at the correct of the Const actor to the enter port of the exhibit actor. • Open the administrators library and drag the SDF Director onto the web page. The director controls quite a few points of the model’s performance, similar to (for instance) what number iterations the version will execute (which is, through default, only one iteration). Now you'll have whatever that appears like determine 2. 7. during this version, the Const actor will create a string and the show actor will exhibit that string. Set the string variable to “Hello global” by means of double or correct clicking at the Const actor icon and choosing [Customize→Configure], with a purpose to show the conversation field proven in determine 2. eight. En- determine 2. 7: The hi global instance. [online] forty six Ptolemaeus, approach layout 2. development GRAPHICAL versions determine 2. eight: The Const parameter editor. ter the string "Hello international" (with the citation marks) for the worth parameter and click on the dedicate button. (The citation marks make sure that the expression can be interpreted as a string. ) if you happen to run this version, a show window will exhibit the textual content “Hello global. ” you could desire to keep your version utilizing the dossier menu. dossier names for Ptolemy II versions may still result in “. xml” or “. moml” in order that Vergil will adequately procedure the dossier the following time it's opened. 2. 1. three Making Connections The version developed above comprises actors and one connection among them.