This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
 BUILT-IN MATHEMATICA SYMBOL

# SystemsModelParallelConnect

 SystemsModelParallelConnect connects TransferFunctionModel or StateSpaceModel objects and in parallel. SystemsModelParallelConnect connects only input of to input of , and sums only output of and output of . SystemsModelParallelConnectconnects the inputs to inputs and sums the outputs and outputs .
• The inputs and outputs of the system produced by SystemsModelParallelConnect are the unions of the inputs and outputs of and , respectively.
• The arguments , , , and are integers specifying the positions of the input or output channels.
• If or is in state-space form, the result is given in state-space form.
Connect two transfer functions in parallel:
A parallel connection of two identical systems:
A two-input, three-output system and a two-input, two-output system:
Connect input 2 of system 1 with input 1 of system 2, and sum output 3 of system 1 with output 2 of system 2:
Connect two transfer functions in parallel:
 Out[1]=

A parallel connection of two identical systems:
 Out[1]=

A two-input, three-output system and a two-input, two-output system:
 Out[1]=
Connect input 2 of system 1 with input 1 of system 2, and sum output 3 of system 1 with output 2 of system 2:
 Out[2]=

 Scope   (3)
Connect two continuous-time systems in parallel:
Connect two discrete-time systems in parallel:
Connect two-input, two-output systems in parallel:
Merge two systems:
Connect the corresponding inputs:
Sum the corresponding outputs:
 Applications   (3)
A function that connects any number of matching systems in parallel:
Connect a family of first-order systems in parallel:
Connect several multiple-input, multiple-output systems:
Construct a parallel RLC circuit:
Add a disturbance model to the output of a system:
SystemsModelParallelConnect is essentially a summation operation:
A parallel connection leaves the states of the subsystems unchanged:
The minimum value of the number of inputs of the resulting system is greater than or equal to the maximum value of the number of inputs of each subsystem:
A similar result holds for the minimum number of outputs:
If any one of the subsystems is a StateSpaceModel object, so is the result:
New in 8