Mts WIFT Mini Transducer Interface Uživatelský manuál stáhnout pdf (Strana 26)

SWIFT

Mini TI

Transducer Interface

Hardware Overview

The angle output for a tire rotating at constant velocity can be represented by the

following illustration:

Although you may not routinely use it, the angle output information is available

for tasks such as tire uniformity testing and troubleshooting.

If using the sawtooth angle output for analysis, care should be taken when setting

the data acquisition to avoid filter-induced ringing or attenuation of the sawtooth

output.

High-Resolution

Velocity Algorithm

The Mini TI has two algorithms for calculating angular velocity. The high

resolution algorithm provides a much cleaner signal, but requires a minimum

Mini TI FPGA version of 15. For the high resolution algorithm, the plot below

shows the expected ripple of the angular velocity signal as a function of actual

angular velocity.

The low resolution velocity algorithm produces significantly larger ripples on the

angular velocity signal. These ripples can be reduced by enabling a filter at the

input of data acquisition system. For more information on the angular velocity

output option, contact MTS.

Communications The TI uses USB 2.0 for communication. The MTS supplied USB drivers must

be installed on each computer you connect to the TI.

0 360°

0° 360°

Angle

Output

1 rev = 360°

S20-10

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 85 86

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Mts WIFT Mini Transducer Interface Uživatelský manuál Strana 26