block Cosine "Generate cosine signal"
import Modelica.Constants.pi;
parameter Real amplitude = 1 "Amplitude of cosine wave"
annotation (Dialog(groupImage = "modelica://Modelica/Resources/Images/Blocks/Sources/Cosine.png"));
parameter SI.Frequency f(start = 1) "Frequency of cosine wave";
parameter SI.Angle phase = 0 "Phase of cosine wave";
extends Interfaces.SignalSource;
equation
y = offset + (if time < startTime then 0 else amplitude * Modelica.Math.cos(2 * pi * f * (time - startTime) + phase));
annotation (
Icon(
coordinateSystem(
preserveAspectRatio = true,
extent = {
{-100, -100},
{100, 100}}),
graphics = {
Line(
points = {
{-80, 68},
{-80, -80}},
color = {192, 192, 192}),
Polygon(
points = {
{-80, 90},
{-88, 68},
{-72, 68},
{-80, 90}},
lineColor = {192, 192, 192},
fillColor = {192, 192, 192},
fillPattern = FillPattern.Solid),
Line(
points = {
{-90, 0},
{68, 0}},
color = {192, 192, 192}),
Polygon(
points = {
{90, 0},
{68, 8},
{68, -8},
{90, 0}},
lineColor = {192, 192, 192},
fillColor = {192, 192, 192},
fillPattern = FillPattern.Solid),
Line(
points = {
{-80, 80},
{-76.2, 79.8},
{-70.6, 76.6},
{-64.9, 69.7},
{-59.3, 59.4},
{-52.9, 44.1},
{-44.83, 21.2},
{-27.9, -30.8},
{-20.7, -50.2},
{-14.3, -64.2},
{-8.7, -73.1},
{-3, -78.4},
{2.6, -80},
{8.2, -77.6},
{13.9, -71.5},
{19.5, -61.9},
{25.9, -47.2},
{34, -24.8},
{42, 0}},
smooth = Smooth.Bezier),
Text(
extent = {
{-147, -152},
{153, -112}},
textString = "f=%f"),
Line(points = {
{42, 1},
{53.3, 35.2},
{60.5, 54.1},
{66.9, 67.4},
{72.6, 75.6},
{78.2, 80.1},
{83.8, 80.8}})}),
Documentation(info = "<html>\n<p>\nThe Real output y is a cosine signal:\n</p>\n\n<p>\n<img src=\"modelica://Modelica/Resources/Images/Blocks/Sources/Cosine.png\"\n alt=\"Cosine.png\">\n</p>\n</html>"));
end Cosine;