MTS WIFT Mini Transducer Interface - Manual (Page 63)

Road Simulator
SWIFT ® Mini TI Installation 63
Road Simulator
There are two methods of using a SWIFT on a road simulator.
The traditional “non-spinning” or “fixed” mode relies on the orientation of the
SWIFT during road simulator use maintaining the same orientation relative to the
anti-rotate position used during road testing. The SWIFT outputs are given in set
coordinates relative to the SWIFT sensor orientation, and no angular
transformation is applied to the SWIFT outputs. This is the typical method of use
for larger vehicles where the angle variations of the anti-rotate bar are negligible
during road testing.
The second method uses the SWIFT in a “spinning” mode. While the SWIFT
itself is not spinning, the outputs from the SWIFT are passed thru the rotational
transformation processing in the TI box, and the actual angle of the SWIFT
relative to the encoder anti-rotate is taken into account. This method is best
when there are significant angle variations of the anti-rotate bar during use, as is
common on many smaller, high deflection recreational vehicles.
Depending on which mode you are using, you must load the correct calibration
file into the TI boxes. Two calibration files are provided with each TI box:
• For fixed (non-spinning) mode the calibration file name is
f.cal.
• For spinning mode the calibration file name is s.cal.