parallel (Control System Toolbox)

Parallel connection of two LTI models

Syntax

sys = parallel(sys1,sys2)
sys = parallel(sys1,sys2,inp1,inp2,out1,out2)

Description

parallel

connects two LTI models in parallel. This function accepts any type of LTI model. The two systems must be either both continuous or both discrete with identical sample time. Static gains are neutral and can be specified as regular matrices.

sys = parallel(sys1,sys2)

forms the basic parallel connection shown below.

This command is equivalent to the direct addition

sys = sys1 + sys2

(See "Addition and Subtraction" in the manual for details on LTI system addition.)

sys = parallel(sys1,sys2,inp1,inp2,out1,out2)

forms the more general parallel connection.

The index vectors inp1 and inp2 specify which inputs

of sys1 and which inputs

of sys2 are connected. Similarly, the index vectors out1 and out2 specify which outputs

of sys1 and which outputs

of sys2 are summed. The resulting model sys has

as inputs and

as outputs.

Example

See page 9-53 for an example.