| Simulink Reference | |
Implement a zero-order hold of one sample period
Library
Description
The Zero-Order Hold block samples and holds its input for the specified sample period. The block accepts one input and generates one output, both of which can be scalar or vector. If the input is a vector, all elements of the vector are held for the same sample period.
You specify the time between samples with the Sample time parameter. A setting of -1 means the Sample time is inherited.
This block provides a mechanism for discretizing one or more signals in time, or resampling the signal at a different rate. If your model contains multirate transitions, you must add Zero-Order Hold blocks between the fast-to-slow transitions. The sample rate of the Zero-Order Hold must be set to that of the slower block. For slow-to-fast transitions, use the Unit Delay block. For more information about multirate transitions, refer to the Simulink or the Real-Time Workshop documentation.
Data Type Support
The Zero-Order Hold block accepts real or complex signals of any data type supported by Simulink, including fixed-point data types.
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
-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 |
No |
| Dimensionalized |
Yes |
| Zero Crossing |
No |
| | XY Graph | Zero-Pole | |
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