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Discrete Linear Systems VIs

LabVIEW 8.6 FPGA Module Help
June 2008

NI Part Number:
371599D-01

»View Product Info

Owning Palette: Control VIs

Installed With: FPGA Module. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Discrete Linear Systems VIs to control or model discrete linear systems on FPGA targets.

Note  This palette is specific to FPGA targets.
Palette ObjectDescription
Discrete Control FilterApplies a fifth-order low-pass integer FIR filter to the input data. The filter cut-off frequency is 1/10 of the sample frequency of the input. Use the Discrete Control Filter VI to filter measured values, such as the process variable, in control applications. The data type you wire to input determines the output data type.
Discrete DelayDelays the input value for the number of loop iterations you specify in the Configure Discrete Delay dialog box.
Discrete Normalized IntegratorIntegrates a discrete input signal using forward Euler integration. The VI assumes that the integration interval (dt) is normalized to 1. The data type you wire to input determines output data type, where output word length is equal to input word length + 16 bits.
Initial ConditionProduces a predefined initial condition immediately after the first time you call or initialize the VI. The data type you wire to input determines the output data type.
Unit DelayDelays the input value for one cycle. The data type you wire to input determines the output data type.
Zero-Order HoldSamples an input signal and holds it for a specified number of calls to the VI. The data type you wire to input determines the output data type.

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