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Loss Element
Loss Element component
The Loss Element component models losses using velocity-dependent efficiency.
Kinematic Equation
Where and are the absolute rotation angles of and , respectively and is the fixed rotation angles of with respect to
Also and are defined as:
, ∈
Torque Balance Equation (No Inertia)
Where and are the torques applied to and , respectively.
Also is the loss torque and is defined as:
Where
=
Power Loss:
When the gear is non-ideal (ideal = false ), the power loss () is calculated as:
Connections
Name
Condition
Description
ID
-
Flange to driver shaft
flange_a
Flange to driven shaft
flange_b
support
Conditional Support Flange
Support
Conditional real output port for power loss
lossPower
Parameters
Symbol
Default
Units
Defines whether the component is:
true - ideal or
false - non-ideal
ideal
Defines fixed rotation of with respect to
deltaPhi
data source
GUI
Defines the source for the loss data:
entered via GUI [GUI]
by an attachment [attachment]
by an external file [file]
datasourcemode
Use support
Enables/disables the support flange
useSupport
data source = GUI
Defines velocity dependant efficiency
The columns are:
[ ( ( ) ( )]
Five options are available:
1 by 1 array: entered value is taken as the constant efficiency for forward and backward cases
( ) = ( ) =
1 by 2 array: first entered value is taken as the constant efficiency for forward case and the second for backward cases
1 by 3 array: first column is ignored and the second and third values are taken as constant efficiencies for forward and backward cases, respectively
n by 2 array: 2nd column is efficiency
( ) = ( ) = ( )
n by 3 array:
2nd column is forward efficiency
( )
3rd column is backward efficiency
Note: The rows of the array are ordered according to , with the first row having the smallest ||
lossTable
data source = attachment
First column is angular velocity ( )
(See below)
data
data source = file
fileName
data source = attachment or file
Defines the corresponding data columns used for forward efficiency () and backward efficiency ( )
Two options are available:
1 by 1 array:
Data column corresponding to the column number is used for both forward and backward efficiency
1 by 2 array:
Data column corresponding to the first column number is used for forward efficiency (
and data column corresponding to the second column number is used for backward efficiency (
columns
smoothness
Table points are linearly interpolated
Defines the smoothness of table interpolation. There are two options:
Table points are interpolated such that the first derivative is continuous
See Also
MapleSim Driveline Library Overview
MapleSim Library Overview
1-D Mechanical Overview
Loss Elements
Download Help Document
