Accelerating the pace of engineering and science

# frest.createFixedTsSinestream

Package: frest

Sinestream input signal with fixed sample time

## Syntax

input = frest.createFixedTsSinestream(ts)
input = frest.createFixedTsSinestream(ts,{wmin wmax})
input = frest.createFixedTsSinestream(ts,w)
input = frest.createFixedTsSinestream(ts,sys)
input = frest.createFixedTsSinestream(ts,sys,{wmin wmax})
input = frest.createFixedTsSinestream(ts,sys,w)

## Description

input = frest.createFixedTsSinestream(ts) creates sinestream input signal in which each frequency has the same fixed sample time ts in seconds. The signal has 30 frequencies between 1 and ωs, where ${\omega }_{s}=\frac{2\pi }{{t}_{s}}$ is the sample rate in radians per second. The software adjusts the SamplesPerPeriod option to ensure that each frequency has the same sample time. Use when your Simulink® model has linearization input I/Os on signals with discrete sample times.

input = frest.createFixedTsSinestream(ts,{wmin wmax}) creates sinestream input signal with up to 30 frequencies logarithmically spaced between wmin and wmax in radians per second.

input = frest.createFixedTsSinestream(ts,w) creates sinestream input signal with frequencies w, specified as a vector of frequency values in radians per second. The values of w must satisfy $w=\frac{2\pi }{Nts}$ for integer N such that the sample rate ${\omega }_{s}=\frac{2\pi }{{t}_{s}}$ is an integer multiple of each element of w.

input = frest.createFixedTsSinestream(ts,sys) creates sinestream input signal with a fixed sample time ts. The signal's frequencies, settling periods, and number of periods automatically set based on the dynamics of a linear system sys.

input = frest.createFixedTsSinestream(ts,sys,{wmin wmax}) creates sinestream input signal with up to 30 frequencies logarithmically spaced between wmin and wmax in radians per second.

input = frest.createFixedTsSinestream(ts,sys,w) creates sinestream input signal at frequencies w, specified as a vector of frequency values in radians per second. The values of w must satisfy $w=\frac{2\pi }{Nts}$ for integer N such that the sample rate ts is an integer multiple of each element of w.

## Examples

Create a sinusoidal input signal with the following characteristics:

• Sample time of 0.02 sec

• Frequencies of the sinusoidal signal are between 1 rad/s and 10 rad/s

`input = frest.createFixedTsSinestream(0.02,{1, 10});`