Improve armar7 platform movement

source/RobotAPI/components/units/RobotUnit/NJointControllers/NJointHolonomicPlatformVelocityControllerWithRamp.cpp

@@ -64,6 +64,7 @@ namespace armarx
         data.velocityX = velX;
         data.velocityY = velY;
         data.velocityRotation = velRot;
+        data.commandTimestamp = IceUtil::Time::now();
         setControlStruct(data);
         //        reinitTripleBuffer(data);
     }
@@ -136,9 +137,14 @@ namespace armarx
         float posFactor = posDelta.norm() / maxPositionAcceleration / dt;
         factor = std::max(factor, posFactor);
 
-        float oriFactor = std::abs(delta(3)) / maxOrientationAcceleration / dt;
+        float oriFactor = std::abs(delta(2)) / maxOrientationAcceleration / dt;
         factor = std::max(factor, oriFactor);
 
+        if (factor < 0)
+        {
+            throw LocalException("Error factor negative!");
+        }
+
         state += delta / factor;
         return state;
     }