Properties of Signal Flow Graph?

The basic properties of the signal flow graph are:

  1. Signal Flow Graphs are applicable to linear systems
  2. It consists of nodes and branches. A node is a point representing a variable or signal. A branch indicates the functional dependence of one signal on another
  3. A node adds the signals of all incoming branches and transmits this sum to all outgoing branches
  4. Signals travel along branches only in a marked direction and is multiplied by the gain of the branch
  5. The algebraic equations must be in the form of cause and effect relationship
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