MTS SWIFT 20 Ultra Sensor User Manual
Page 68
SWIFT 20 Sensors
68
Edit the Calibration File
Setting up the Low-Profile Transducer Interface
3. Perform this step for spinning application. For non-spinning applications,
skip to Step 4.
A.
Edit the value for ZeroAlgorithm.
The zero algorithm value that you specify will affect the operation of
the Angle Zero and Bridge Zero switches.
Set ZeroAlgorithm=1, 3 or 4
1
B.
Edit the value for AngleMode.
Set the AngleMode=0
In this mode, the encoder pulses are summed in with the offset and the
resulting value addresses the sine and cosine RAM, which perform the
rotational transformation of the output signals.
Example Output Polarities
Output Polarity Value
Description
Direction of Positive
output from load on tire
when mounted on left
hand side of the vehicle
Direction of Positive
output from load on tire
when mounted on right
hand side of the vehicle
OutputPolarities = 40
Standard Setting from
MTS. Matches the axis
orientation on the front
cover of the SWIFT.
+Fx = fore
+Fy = out from car, left
+Fz = up
+Mx, +My+, +Mz =
Right-hand rule about
Force axis
+Fx = aft
+Fy = out from car, right
+Fz = up
+Mx, +My, +Mz = Right-
hand rule about Force
axis
OutputPolarities = 51
Common setting to
alter the axis for-aft and
in-out lateral axis
+Fx = aft
+Fy= into car, right
+Fz = up
+Mx, +My, +Mz =
Right-hand rule about
Force axis
+Fx = fore
+Fy = into car, left
+Fz = up
+Mx, +My, +Mz = Right-
hand rule about Force
axis
OutputPolarities (left side) = 51
OutputPolarities (right side) = 40
Common setting for
vehicle coordinate
matching between the
two sides of the
vehicle.
+Fx = aft
+Fy= into car, right
+Fz = up
+Mx, +My, +Mz =
Right-hand rule about
Force axis
+Fx = aft
+Fy = out from car, right
+Fz = up
+Mx, +My, +Mz = Right-
hand rule about Force
axis
S20-34
Front
Fz
Up
Fy
Out
Fx
Aft
Fz
Up
Fx
Fore
Fy
Out
S20-35
Front
Fy
In
Fz
Up
Fx
Aft
Fy
In
Fx
Fore
Fz
Up
S20-41
Front
Fx
Aft
Fy
In
Fz
Up
Fx
Aft
Fy
Out
Fz
Up
1. See the Zero Algorithms discussion on
to help determine which
algorithm to use.