PLECS 3.3 Online Help

Small Signal Gain

This block is included only in the PLECS Standalone library.

Purpose

Measure loop gain of closed control loop using small signal analysis

Library

Control / Small Signal Analysis

Description

pict

This block uses the Small Signal Perturbation block and the Small Signal Response block to inject a perturbation into a feedback loop and measure the system response. To see the implementation choose Look under mask from the context menu of the block.

For detailed information regarding small signal analysis see chapter Analysis Tools.

Parameter

Compensate for negative feedback
When set to on, the underlying Small Signal Response block inverts the reference input in order to compensate for a negative unity gain that is introduced when the feedback signal is subtracted from a reference signal.

When set to off, the reference input is taken as is.