Constant Ramp

Generate ramp signal with length based on input dimensions

• Library:

• DSP System Toolbox / Signal Operations

• 

Description

The Constant Ramp block generates the constant ramp signal

y = (0:L-1)*m + b 

where m is the slope specified by the scalar Slope parameter, and b is the y-intercept specified by the scalar Offset parameter.

For an unoriented vector input, L is equal to the length of the input vector. For an N-D input array, the length L of the output ramp is equal to the length of the input in the dimension specified by the Ramp length equals number of or Dimension parameter. The output, y, is always an unoriented vector.

Ports

Input

Port_1 — Input signal

scalar | vector | matrix | N-D array

Input signal used to generate ramp signal, specified as a scalar, vector, matrix, or N-D array.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | fixed point

Output

Port_1 — Output signal

vector

Output signal, specified as an unoriented vector. The block determines the length of the output based on the length of the input signal, and the Ramp length equals number of or Dimension parameter.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | fixed point

Parameters

Main

Ramp length equals number of — Dimension used to determine ramp length

Rows (default) | Columns | Elements in specified dimension

Specify whether the length of the output ramp is the number of rows, number of columns, or the length of the specified dimension of the input.

Dimension — Dimension that determines length of output ramp

1 (default) | positive integer

Specify the one-based dimension of the input array that determines the length of the output ramp as a positive integer scalar.

Dependencies

To enable this parameter, set Ramp length equals number of to Elements in specified dimension.

Slope — Slope of the ramp

1 (default) | scalar

Specify the slope of the ramp as a real-valued double-precision scalar.

Offset — y-intercept of the ramp

0 (default) | scalar

Specify the scalar y-intercept of the ramp as a real-valued double-precision scalar.

Data Types

Output data type — Output data type

Inherit: Same as input (default) | Inherit: Inherit via back propagation | double | single | int8 | uint8 | int16 | uint16 | int32 | uint32 | int64 | uint64 | boolean | fixdt(1,16) | fixdt(1,16,0) | <data type conversion>

Specify the output data type for this block. You can select one of the following:

• A rule that inherits a data type, for example, Inherit: Same as input.

• A built-in data type, such as double

• An expression that evaluates to a valid data type, for example, fixdt(1,16)

For help setting data type parameters, display the Data Type Assistant by clicking the Show data type assistant button .

See Control Data Types of Signals (Simulink) for more information.

Model Examples

Generate Constant Ramp Signal

This model example shows how to generate a ramp signal from the Constant Ramp block.

Open Model

Block Characteristics

Data Types	double | fixed point | integer | single
Direct Feedthrough	no
Multidimensional Signals	no
Variable-Size Signals	no
Zero-Crossing Detection	no

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using Simulink® Coder™.

Generated code relies on the memcpy or memset function (string.h) under certain conditions.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

Introduced before R2006a