Simulink®

Unit Delay With Preview Enabled

Output signal and signal delayed by one sample period, if external enable signal is on

Library

Additional Math & Discrete / Additional Discrete

Description

The Unit Delay With Preview Enabled block supports calculations that have feedback and depend on the current input.

The block has two output ports. When the external enable signal E is on, the upper port outputs the signal and the lower port outputs the signal delayed by one sample period. The block has two input ports, one for the input signal u and the other for the enable signal E.

When the enable signal E is off, the block is disabled, and the state and output values do not change, except for resets. The enable signal is on when E is not 0, and off when E is 0.

You specify the block output for the first sampling period with the value of the Initial condition parameter.

The input u can be any data type. The output is the same data type as the input u.

You specify the time between samples with the Sample time parameter. A setting of -1 means the Sample time is inherited.

Data Type Support

The Unit Delay With Preview Enabled block accepts signals of any data type supported by Simulink^® software, including fixed-point data types.

Parameters and Dialog Box

Initial condition

Specify the initial condition.

Sample time

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

See Also

Unit Delay, Unit Delay Enabled, Unit Delay Enabled External IC, Unit Delay Enabled Resettable, Unit Delay Enabled Resettable External IC, Unit Delay External IC, Unit Delay Resettable, Unit Delay Resettable External IC, Unit Delay With Preview Enabled Resettable, Unit Delay With Preview Enabled Resettable External RV, Unit Delay With Preview Resettable, Unit Delay With Preview Resettable External RV

Unit Delay Resettable External IC

Unit Delay With Preview Enabled Resettable