Saturation (Simulink Reference)

Limit the range of a signal

Library

Discontinuities

Description

The Saturation block imposes upper and lower bounds on a signal. When the input signal is within the range specified by the Lower limit and Upper limit parameters, the input signal passes through unchanged. When the input signal is outside these bounds, the signal is clipped to the upper or lower bound.

When the Lower limit and Upper limit parameters are set to the same value, the block outputs that value.

Data Type Support

The Saturation block accepts real signals of any data type supported by Simulink, except Boolean. The Saturation block supports fixed-point data types. The output data type is the same as the input data type.

For a discussion on the data types supported by Simulink, refer to Data Types Supported by Simulink in the Using Simulink documentation.

Parameters and Dialog Box

Upper limit: Specify the upper bound on the input signal. When the input signal to the Saturation block is above this value, the output of the block is clipped to this value.; The Upper limit parameter is converted to the input data type offline using round-to-nearest and saturation.
Lower limit: Specify the lower bound on the input signal. When the input signal to the Saturation block is below this value, the output of the block is clipped to this value.; The Lower limit parameter is converted to the input data type offline using round-to-nearest and saturation.
Treat as gain when linearizing: Linearization commands in Simulink treat this block as a gain in state space. Select this parameter to cause the linearization commands to treat the gain as 1; otherwise, the commands treat the gain as 0.
Enable zero crossing detection: Select to enable zero crossing detection. For more information, see Zero Crossing Detection in the Using Simulink documentation.
Sample time (-1 for inherited): Specify the time interval between samples. To inherit the sample time, set this parameter to -1. See Specifying Sample Time in the online documentation for more information.

Characteristics

Direct Feedthrough
Yes

Sample Time
Specified in the Sample time parameter

Scalar Expansion
Yes, of parameters and input

Dimensionalized
Yes

Zero Crossing
Yes, if enabled.

Direct Feedthrough	Yes
Sample Time	Specified in the Sample time parameter
Scalar Expansion	Yes, of parameters and input
Dimensionalized	Yes
Zero Crossing	Yes, if enabled.

See Also

Saturation Dynamic

Rounding Function Saturation Dynamic