SFG

It is a Signal flow graph representation of a system , a method used to check stability of control systems.

• Main features

  • User friendly gui made with javafx .
  • Drawing without any restrictions on the position of node .
  • Adding the node’s name and the arrow gain immediately on the draw .
  • The the connections between the nodes are designed to be either straight line or curve to avoid intersections (most of the time).
  • Showing the solution with the graph to track forward paths.
  • The user can switch between forward paths ,loops ,untouched loops and the total transfer function with single click .
  • If any error happened the user will be notified that his graph has an error in the solution pane.

• Data structures

  • Class for nodes, Arrows, loops and forward paths.
  • Arraylists to keep nodes, Arrows, forward paths and loops.
  • Arraylist of Arraylists to keep untouched loops.
  • Hashmap to store the icons with their names as keys
  • Linked Lists for the gui nodes and arrows .

• Main modules

  • Control module called SFG that handle all operations .
  • View module to handle GUI .
  • Structure Module that keep all data (Nodes, Arrows, Forward paths and loops).

• Algorithms used

  • DFS to find the forward paths.
  • DFS to find loopst.
  • To find untouched loops, I found all ….. And removed touched and repeated ones.

• user guide

• sample runs

Running

Clone & install

• Clone this repo https://github.com/Magho/SFG
• cd SFG/jar
• run SFG.jar file

Authors

• Magho
• Abdelrahman Ahmed

License

LICENSE.md