block Ramp "Generate ramp signal"
parameter Real height = 1 "Height of ramps"
annotation (Dialog(groupImage = "modelica://Modelica/Resources/Images/Blocks/Sources/Ramp.png"));
parameter SI.Time duration(min = 0, start = 2) "Duration of ramp (= 0.0 gives a Step)";
extends Interfaces.SignalSource;
equation
y = offset + (if time < startTime then 0 else if time < startTime + duration then (time - startTime) * height / duration else height);
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, -70},
{82, -70}},
color = {192, 192, 192}),
Polygon(
points = {
{90, -70},
{68, -62},
{68, -78},
{90, -70}},
lineColor = {192, 192, 192},
fillColor = {192, 192, 192},
fillPattern = FillPattern.Solid),
Line(points = {
{-80, -70},
{-40, -70},
{31, 38}}),
Text(
extent = {
{-150, -150},
{150, -110}},
textString = "duration=%duration"),
Line(points = {
{31, 38},
{86, 38}})}),
Documentation(info = "<html>\n<p>\nThe Real output y is a ramp signal:\n</p>\n\n<p>\n<img src=\"modelica://Modelica/Resources/Images/Blocks/Sources/Ramp.png\"\n alt=\"Ramp.png\">\n</p>\n\n<p>\nIf parameter duration is set to 0.0, the limiting case of a Step signal is achieved.\n</p>\n</html>"));
end Ramp;