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Backlash VI

LabVIEW 8.6 FPGA Module Help
June 2008

NI Part Number:
371599D-01

»View Product Info

Owning Palette: Nonlinear Systems VIs

Installed With: FPGA Module

Implements a backlash or deadband function. output does not change until input differs from the previous output by at least half of deadband. The data type you wire to input determines the output data type.

The maximum input word length is 32 bits.

reset, when TRUE, uses initial output instead of the previous output to perform the deadband computation. The VI initializes automatically when it first runs in an FPGA VI.
input is the data point the VI processes.
deadband is an unsigned fixed-point number representing an interval around the previous output. output does not change unless input is outside the deadband interval.
initial output is the value LabVIEW compares to input the first time you call the VI or when reset is TRUE.
output is the processed data point. If the magnitude of the difference between input and the previous output is greater than half of deadband,

output = inputdeadband / 2 for input > previous output

and

output = input + deadband / 2 for input <= previous output

Otherwise, output remains unchanged.

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