VIN – Validation of the input signal

Block SymbolLicensing group: ADVANCED
PIC

Function Description
The VIN block can be used for verification of the input signal quality in the REX control system. Further details about quality flags can be found in chapter 1.4 of this manual. The RexLib function block library for Matlab-Simulink does not use any quality flags.

The block continuously separates the quality flags from the input u and feeds them to the iqf output. Based on these quality flags and the GU parameter (Good if Uncertain), the input signals are processed in the following manner:

The output yg is equal to the u input if QG = on. Otherwise it is set to yg = sv (substitution variable).

Inputs

u

Input signal whose quality is assessed. The type of the signal is determined upon the connected signal.

unknown

sv

Substitute value for an error case

unknown

Outputs

yg

Validated output signal (yg = u for QG = on or yg = sv for QG = off)

unknown

QG

Indicator of input signal acceptability

bool

iqf

Complete quality flag separated from the u input signal

long

Parameter

GU

Acceptability of UNCERTAIN quality

bool

off ..

Uncertain quality unacceptable

on ...

Uncertain quality acceptable