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Construction, Transducer, Specifications 26 – MTS SWIFT 10 ATV Sensor User Manual

Page 20: Construction 20

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SWIFT 10 ATV Sensors

20

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, the transducer spins with the wheel. On a road simulator, the transducer
attaches directly to an adapter plate on the 329 spindle housing. The slip ring can

be used to accommodate the range of motion of the rear swing arm.The

transducer is available in two materials.

The transducer’s unibody design means there are no multiple parts welded or
screwed together.

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.

Slip Ring

Bracket

(with encoder)

Washer

Plate

Transducer

Modified Wheel Rim

Lug Nuts

Inner Hub

Adapter

S10-08