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First-Order Hold

Implement a first-order sample-and-hold.

Library

Discrete

Description

The First-Order Hold block implements a first-order sample-and-hold that operates at the specified sampling interval. This block has little value in practical applications and is included primarily for academic purposes.

You can see the difference between the Zero-Order Hold and First-Order Hold blocks by running the demo program fohdemo. This figure compares the output from a Sine Wave block and a First-Order Hold block.


Data Type Support

A First-Order Hold block accepts and outputs signals of type double.

Parameters and Dialog Box

Sample time
The time interval between samples.

Characteristics

Direct Feedthrough
 No
Sample Time
 Continuous
Scalar Expansion
 No
States
 1 continuous and 1 discrete per input element
Vectorized
 Yes
Zero Crossing
 No


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