cos_tr, sin_tr, step_tr (Mu Analysis and Synthesis Toolbox)

Generate a VARYING matrix containing a cosine, sine, or step signal at an evenly spaced time interval

Syntax

out = cos_tr(freq,mag,tinc,lastt) 
out = sin_tr(freq,mag,tinc,lastt) 
out = step_tr(timedata,stepdata,tinc,lastt)

Description

cos_tr, sin_tr, and step_tr generate time signals for use with the trsp (time response) command. The following are the input variables provided to cos_tr and sin_tr:

Inputs to cos_tr and sin_tr:

freq
frequency of the cosine (sine) signal (radians/second)

mag
magnitude of signal

tinc
time step (increment)

lastt
final time (the signal starts at time t=0)

`freq`	frequency of the cosine (sine) signal (radians/second)
`mag`	magnitude of signal
`tinc`	time step (increment)
`lastt`	final time (the signal starts at time t=0)

Output:

out
time varying matrix of the cosine (sine) signal

`out`	time varying matrix of the cosine (sine) signal

Inputs to step_tr:

timedata
time at which step occurs (vector)

stepdata
magnitude of step (vector)

tinc
time step (increment)

lastt
final time (the signal starts at time t=0)

`timedata`	time at which step occurs (vector)
`stepdata`	magnitude of step (vector)
`tinc`	time step (increment)
`lastt`	final time (the signal starts at time t=0)

Output:

out
time varying matrix of steps

`out`	time varying matrix of steps

Examples

Synthesize a cosine signal with a 1 Hz frequency and of magnitude 1.5, 5 seconds in length. The time increment is .05 seconds.

out=cos_tr(2*pi,1.5,.05,5); 
vplt('iv,d',out) 
grid 
title('Generate a cosine signal via cos_tr') 
xlabel('time (seconds)') 
ylabel('Magnitude')

Algorithm

cos_tr and sin_tr call the MATLAB commands cos and sin, respectively.