model RelSpeedSensor "Ideal sensor to measure the relative speed"
extends Translational.Interfaces.PartialRelativeSensor;
SI.Position s_rel "Distance between the two flanges (flange_b.s - flange_a.s)";
Modelica.Blocks.Interfaces.RealOutput v_rel(unit = "m/s") "Relative velocity between two flanges (= der(flange_b.s) - der(flange_a.s)) as output signal"
annotation (Placement(transformation(
extent = {
{-10, -10},
{10, 10}},
rotation = 270,
origin = {0, -110})));
equation
0 = flange_a.f;
s_rel = flange_b.s - flange_a.s;
v_rel = der(s_rel);
annotation (
Documentation(
info = "<html>\n<p>\nMeasures the <em>relative speed v</em> of a flange in an ideal way and provides the result as\noutput signals (to be further processed with blocks of the\nModelica.Blocks library).\n</p>\n\n</html>",
revisions = "<html>\n<p><strong>Release Notes:</strong></p>\n<ul>\n<li><em>First Version from August 26, 1999 by P. Beater</em></li>\n</ul>\n</html>"),
Icon(
coordinateSystem(
preserveAspectRatio = true,
extent = {
{-100, -100},
{100, 100}}),
graphics = {
Text(
extent = {
{8, -68},
{42, -102}},
textString = "v"),
Line(
points = {
{0, -100},
{0, -61}},
color = {0, 0, 127})}));
end RelSpeedSensor;