Check usage of Gain blocks

mathworks.hism.hisl_0066

Dependencies: Simulink^® Check™

Usage: High-Integrity System Modeling

Guideline: hisl_0066: Usage of Gain blocks

Description

This check identifies the Gain blocks with values that resolve to 1, an identity matrix, or a matrix of ones.

Check Parameters

Use the Model Advisor Configuration Editor to define the scope of the analysis by specifying the input parameters.

Parameter	Description
Follow links	Verify and trace links within the Simulink model. on (default) | off
Look under masks	Specify whether to include masked model elements in the analysis. all (default) | none | graphical | functional all — Check analysis includes all masked model elements. none — Check analysis excludes masked model elements. graphical — Check analysis includes only the graphical masked model elements. functional — Check analysis includes only the functional masked model elements.

Recommended Actions and Results

Review the violations that are flagged by the check and the recommended action for fixing the issue. After applying the changes, save the model and rerun the check analysis.

Modeling Condition	Recommended Action
One or more Gain blocks resolve to 1, an identity matrix, or a matrix of ones.	Modify the Gain blocks so that the gain value does not resolve to 1, an identity matrix, or a matrix of ones.

Capabilities and Limitations

• Allows exclusions of blocks and charts

• Analyzes both active and inactive variant choices

• Does not require model compilation

Version History

Introduced in R2018b