Ramp Signal Function
Owning Palette: Signal Generation Functions
Installed With: Control Design and Simulation Module
Generates the point-by-point value of a ramp signal.
| Dialog Box Options |
| Block Diagram Inputs |
| Block Diagram Outputs |
 Place on the block diagram |
Find on the Functions palette |
Dialog Box Options
| Parameter | Description |
|---|---|
| Polymorphic instance | Specifies whether this function is Scalar or Vector. The default value is Scalar. |
| Parameters | Lists all the parameters associated with this function. Select a parameter from this list to configure the parameter. When you select a parameter, the parameter and its associated Parameter source control appear in the Parameter Information section of the configuration dialog box. |
| Preview | Displays a graphical preview, if available, of the function output or configuration. |
| Parameter Information | Contains the parameters you can configure for this function. You must select a parameter from the Parameters list to make that parameter and its associated Parameter source control visible in the Parameter Information section of the configuration dialog box. |
| Parameter source | Specifies whether you configure this parameter using the Configuration Dialog Box or a Terminal on the simulation diagram. The default value is Configuration Dialog Box. If you select Terminal, LabVIEW displays an input for that parameter on the simulation diagram, and you can wire values to that input to configure this function programmatically. If you select Configuration Dialog Box, LabVIEW removes that input from the simulation diagram. You then must set the value for this parameter inside the configuration dialog box. |
| initial output | Specifies the y offset of the ramp signal from simulation initial time to start time. The default value is 0. |
| start time | Specifies the simulation time, in seconds, of the start of the rising edge of the ramp signal. The default value is 0. |
| slope | Specifies the slew rate of the ramp signal. |
Block Diagram Inputs
| Parameter | Description |
|---|---|
| initial output | Specifies the y offset of the ramp signal from simulation initial time to start time. The default value is 0. |
| start time | Specifies the simulation time, in seconds, of the start of the rising edge of the ramp signal. The default value is 0. |
| slope | Specifies the slew rate of the ramp signal. |
Block Diagram Outputs
| Parameter | Description |
|---|---|
| output | Returns the value of the signal evaluated at the current simulation time. The default value is 1. |
Ramp Signal Details
The following equations define the ramp signal.
| where | m is the slope |
| t is the current simulation time | |
| y is the output |
A ramp signal begins at an initial value and changes over time according to the slope you specify. The current value depends on the current simulation time.
Feedthrough Behavior
All input/output pairs of this function have direct feedthrough behavior.
Example
Refer to the SimEx Ramp VI in the labview\examples\Control and Simulation\Simulation\Signal Generation directory for an example of using the Ramp Signal VI.
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