Product

Multipy inputs.

Collaboration diagram for Product:

Multiplies the inputs. The product object is defined through its parameters, which give the kind of Product (dot, cross, elementwise or scalar), the port widths and the number of input ports.

Author

Benjamin Scholz

Date

05.09.2007 BSC: Second version.

20.07.2011 KGA: Ported to FhSim 2.0.

25.07.2011 KGA: Added documentation.

Example configuration excerpt

<Lib
  LibName   = "fhsim_base"
  SimObject = "Math/Product"
  Name      = "A"
  ProdType  = "Elementwise"
  PortWidth = "3"
/>
...
<Connection
  A.In1="10,20,30"
  A.In2="30,20,10"
/>

Input Ports

Name	Width	Description
In1	<PortWidth>	The input port for signal 1
In2	<PortWidth>	The input port for signal 2

Output Ports

Name	Width	Description
Out	<PortWidth>	The result of the product

Configuration parameters

Name	Width	Description
PortWidth	-	The number of elements in the input and output ports
ProdType	-	The type of product must be <elementwise> / <scalar> / <cross>* or <dot>

Note

The cross product is only defined for input ports of width "3".

Initial conditions

There are no initial conditions for this function.

Full example file

<Contents>
  <OBJECTS>
    <Lib
        LibName="base" 
        SimObject="Math/Product"  
        Name="A" 
        ProdType="Elementwise"
        PortWidth="3"
        
    />
    <Lib
        LibName="base"
        SimObject="Math/Product"
        Name="B"
        ProdType="Cross"
        PortWidth="3"
    />
    <Lib
        LibName="base"
        SimObject="Math/Product"
        Name="C"
        ProdType="Dot"
        PortWidth="3"
        
    />
  </OBJECTS>
  
  <INTERCONNECTIONS>
    <Connection
    A.In1="10,20,30"
    A.In2="30,20,10"
    B.In1="1,0,0"
    B.In2="0,1,0"
    C.In1="1,2,3"
    C.In2="2,3,4"
    />
  </INTERCONNECTIONS>
 
  <INITIALIZATION>
    <InitialCondition
    />
  </INITIALIZATION>
 
  <INTEGRATION>
    <Engine
    IntegratorMethod="2"
    NumCores="1"
    TOutput="0, 2, 30"
    LogStates ="1"  
    stepsize ="0"
    HMax="0.002"
    HMin="0.00000001"
    AbsTol="1e-3" RelTol="1e-3"
    UseRSSNormInsteadOfInfNorm="0"
    FileOutput="objects:all"
    />
  </INTEGRATION>
</Contents>

This SimObject is referred to as Math/Product