Check Static Lower Bound
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Checks that the signal is greater than (or equal to) a static lower bound.
blockType: SubSystem
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Path in the library: |
Description
Block Check Static Lower Bound checks whether the input signal is greater than the specified lower bound (or, if necessary, equal to it) at each time step, and after comparison performs the statement. Parameter Lower bound defines the lower bound. If the input signal is greater than the lower bound, the statement takes the value true (1), and the block does nothing. Otherwise, the block stops the simulation and returns an error message by default.
The input signal and the boundary can be scalars, vectors or matrices. The input signal and the boundary must have the same data type. The block compares the value of the input signal with the boundary differently depending on the signal:
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When comparing scalars with vectors or matrices, the block compares a scalar with each element of a non-scalar input signal or boundary.
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When comparing a vector or matrix input signal with a vector or matrix boundary, the block compares the input signal with the boundary element by element.
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For models with an input signal and a boundary, which are vectors or matrices, the input signal and the boundary must have the same dimensions.
Ports
Input
#
u
—
the input signal that is checked for compliance with the lower bound
scalar | vector | the matrix
Details
The input signal that is checked for compliance with the lower limit set by the parameter Lower bound.
| Data types |
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| Complex numbers support |
I don’t |
Parameters
Parameters
# Lower bound — the value of the lower bound
Details
Specify the lower limit of the range of amplitudes that the input signal may have.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
# Inclusive boundary — include the lower limit in the range
Details
Select this option so that the range of acceptable input amplitudes includes the lower limit.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
# Enable assertion — enable or disable verification
Details
If this option is unchecked, then the block is disabled and the model does not take it into account.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
# Simulation callback when assertion fails(optional) — an expression to calculate when an assertion fails
Details
Specify the expression to calculate when the statement fails. Since the expression is evaluated in the workspace, define all the variables used in the expression in this workspace.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
# Stop simulation when assertion fails — stop the simulation if the verification fails
Details
Check this box to stop the simulation if the verification fails. Uncheck this box to display a warning and continue the simulation.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
Select Icon Type —
block icon style
graphic | text
Details
Specify the style of the block icon. If the value is set to graphic, then the icon displays a graphical representation of the approval condition. If the value is set to text, then the icon displays a mathematical expression representing the condition of the statement.
| Values |
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| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |