Changeset 769 for Modelica/branches/maintenance/2.2.1/Modelica/Mechanics/Rotational.mo

Timestamp:

11/04/2007 07:07:07 PM (14 months ago)

Author:

AHaumer

Message:

fixed a bug in Mechanics.Rotational.Interfaces.
PartialSpeedDependentTorque (angle resp. speed has to be the difference between flange and bearing!)

Files:

• Modelica/branches/maintenance/2.2.1/Modelica/Mechanics/Rotational.mo (modified) (2 diffs)

Modelica/branches/maintenance/2.2.1/Modelica/Mechanics/Rotational.mo

@@ -1886 +1886 @@
     partial model PartialSpeedDependentTorque 
       "Partial model of a torque acting at the flange (accelerates the flange)" 
-      Modelica.SIunits.AngularVelocity w = der(flange.phi) 
-        "Angular velocity at flange";
-      Modelica.SIunits.Torque tau = flange.tau 
-        "accelerating torque acting at flange";
+      Modelica.SIunits.Angle phi 
+        "Angle of flange with respect to bearing (= flange.phi - bearing.phi)";
+      Modelica.SIunits.AngularVelocity w 
+        "Angular velocity at flange with respect to bearing (= der(phi))";
+      Modelica.SIunits.Torque tau "Accelerating torque acting at flange";
       Modelica.Mechanics.Rotational.Interfaces.Flange_b flange 
         "Flange on which torque is acting" 
@@ -1930 +1931 @@
 </HTML>"));
     equation 
+      phi = flange.phi - bearing.phi;
+      w = der(phi);
+      tau = flange.tau;
       if cardinality(bearing) == 0 then
         bearing.phi = 0;