Mts SWIFT 20 Ultra Sensor Manuel d'utilisateur télécharger pdf (Page 31)

Low-Profile Transducer Interface

SWIFT 20 Sensors Hardware Overview

Low-Profile Transducer Interface

The Low-Profile TI performs cross talk compensation, transforms the loads from

a rotating to a non-rotating coordinate system, and produces an analog output

signal suitable for any data recorder.

Cross talk

compensation

Cross talk occurs when a force is applied to one axis, but a non-real force is

measured on another axis. The SWIFT sensor design has very low inherent cross

talk. The Low-Profile TI compensates for any cross talk by subtracting the non-

real forces when the amount of cross talk is known.

The amount of known cross talk is determined during the calibration process.

Cross talk values will vary slightly for different rims. For example, a steel rim

will have slightly different cross talk errors than a less rigid aluminum rim.

Signal conditioning The Low-Profile TI is specifically designed to be used for both spinning and non-

spinning applications. The Low-Profile TI performs signal conditioning and

communications functions. The output from the Low-Profile TI is a high-level

signal suitable for input into a multichannel data recorder or an MTS Automated

Site Controller (ASC).

Transducer

Interface

Output signals

(± 10 Volts)

Angular

Position

Bridge

Outputs

Transducer bridge output

signals and encoder

angular position signal are

sent through slip ring

Transducer Interface

converts signals to non-

spinning vehicle coordinates,

applies calibration gains and

cross talk compensation

Force, moment, and

angle analog signals

are output from

Transducer Interface

Angle signal

(05 Volts)

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Mts SWIFT 20 Ultra Sensor Manuel d'utilisateur Page 31

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