Loss Element - MapleSim Help
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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

Condition

Default

Units

Description

ID

-

-

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 dependent 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

  -

Defines velocity dependent efficiency

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 linearly interpolated

• 

Table points are interpolated such that the first derivative is continuous

smoothness

 

See Also

Driveline Library Overview

MapleSim Library Overview

1-D Mechanical Overview

Loss Elements

 

 

 


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