|
Gear Shifter
Automatic Gear Shifter Component
The Gear Shifter component automatically changes the gear for use with various gearboxes in the Driveline Component Library. The gear number (output) is incremented by 1 when the engine RPM (input) passes the upper threshold (![omega[high]](/support/helpjp/helpview.aspx?si=3715/file09629/math40.png) ). Similarly, when the engine RPM goes below the lower threshold (![omega[low]](/support/helpjp/helpview.aspx?si=3715/file09629/math42.png) ), the gear number is decremented by 1.
Note: To avoid multiple gear shifts due to small variations in the engine RPM, pass the input signal through a Lowpass Butterworth filter first.
Internal Structure
Connections
|
Name
|
Condition
|
Description
|
ID
|
|
|
-
|
Real input for engine speed measured in RPM
|
RPM
|
|
|
-
|
Integer output for the gear number. ![N[min] <= N and N <= N[max]](/support/helpjp/helpview.aspx?si=3715/file09629/math168.png)
|
GearNo
|
|
|
Parameters
|
Symbol
|
Condition
|
Default
|
Units
|
Description
|
ID
|
|
![omega[low]](/support/helpjp/helpview.aspx?si=3715/file09629/math247.png)
|
-
|
|
|
Lower RPM threshold for down-shifting
|
minw
|
|
![omega[high]](/support/helpjp/helpview.aspx?si=3715/file09629/math284.png)
|
-
|
|
|
Upper RPM threshold for up-shifting
|
maxw
|
|
![N[0]](/support/helpjp/helpview.aspx?si=3715/file09629/math321.png)
|
-
|
|
|
Initial Gear Number
|
initialGear
|
|
![N[min]](/support/helpjp/helpview.aspx?si=3715/file09629/math358.png)
|
|
|
|
Minimum Gear Number
|
minGear
|
|
![N[max]](/support/helpjp/helpview.aspx?si=3715/file09629/math395.png)
|
|
|
|
Maximum Gear Number
|
maxGear
|
|
|
See Also
MapleSim Driveline Library Overview
MapleSim Library Overview
1-D Mechanical Overview
Engines and Dynamometers
|
Download Help Document
Was this information helpful?
