MTS SWIFT 45 GLP Sensor - Manual (Page 18)

SWIFT ® 45 GLP Sensors 18
Construction
Hardware Overview
Construction
The SWIFT sensor has one-piece construction for outstanding fatigue life, low
hysteresis, and high stiffness. Its compact package has a minimal effect on inertia
calculations, and a minimal dynamic effect on the test vehicle.
The transducer can be used for developing conventional durability tests on the
MTS Model 329 Road Simulator. Normally, the transducer is replaced with an
equivalent wheel adapter after the simulation drive signals are developed and
prior to the start of the test.
The SWIFT sensor includes several mechanical and electrical components.
Transducer
The transducer attaches directly to a modified wheel rim. On the test track
vehicle, it spins with the wheel. It does not spin on a road simulator.
The transducer has four beams with strain gages that measure six orthogonal
outputs:
Fx—longitudinal force
Fy—lateral force
Fz—vertical force
Mx—overturning moment
My—acceleration and brake torque
Mz—steering moment
It has onboard conditioning and amplifiers to improve the signal-to-noise ratio.