Differences between Dymola and MapleSim models

• General remarks:
  • used Dymola 2018 and MapleSim 2017.3 under Kubuntu 16.04
  • Modelica MultiBody library replaced by Planar Mechanical library
    • MapleSim uses a proprietary version → incompatible
  • generally identical behaviour and small execution times
• Problems with diode models:
  • Shockley diode with characteristic v(i) 100x slower than i(v) variant
    • only in MapleSim, no problem in Dymola
  • “real-time” variant with equation i=0
    • Dymola stops simulation, when the first locking phase appears
    • MapleSim works fine
• Problems with rotating pendulum models:
  • graphically constructed subsystems don't run in MapleSim
    • error: 'reinit' applied to an algebraic variable
    • in conflict with explicit stateSelect attribute
    • workaround: Modelica coded subsystems
  • strange bugs with "kicked" pendulum in MapleSim
    • only works when else-branch is (erroneously) deleted
    • (correct) elsewhen leeds to wrong behaviour
    • (incorrect) whens work