adams/car2010版建的模型，在2013版中仿真总是报错，有木有高手知道原因的

少小离家老大回

  ****** Performing Dynamic Simulation using Gstiff I3 Integrator ******
   The system is modelled with INDEX-3 DAEs.
   The integrator is GSTIFF, CORRECTOR = original
   Integration error =    6.000000E-01


Drv_Vhl::ifCalcSetup
Adjusting initial value of I term of longitudinal PID
to match desired initial throttle value: 34.5633

LONGITUDINAL SETUP ITERATIONS = 2

---- START: WARNING ----

  The Reconcile Acceleration-Force has detected a singular Jacobian matrix.
  This problem may be caused by:
     (a) A constraint equations that became almost redundant, e.g., the model
         is at a singular configuration or at a  bifurcation point.
     (b) A massless PARTS in the model.

  The Sparse Solver has detected a zero pivot for row 1096 (during the symbolic pivot selection).
  The corresponding equation is: RevJnt/82 X Delta

  A minimization algorithm will be used to find a solution on the
  projected constraint manifold.

---- END: WARNING ----


---- START: ERROR ----
Time 8.800000E-02:
Acceleration computation failed to converge after 25 iterations.
Equation with the largest imbalance: Part/153 X Force
Imbalance = 9.280188351E-08
Variable receiving largest increment: Part/2 X Acc
Delta = 0.000000000E+00
1) Check mass and inertia properties to ensure they are valid.
2) Make sure the choice of units is appropriate for the system.
   Systems that have very small inertias may benefit from "small"
   force units, e.g., dynes.
3) Check that motion generators are valid and no redundant constraints exist.
4) Check if impact functions caused a strange response in the model (verify properties).
5) An IMPLICIT DIFF element which does not reference DIF1 must be satisfied by its IC.


---- END: ERROR ----

  Dynamic Solution stopped.


  End Simulation

  Simulate status=-124



---- START: ERROR ----
SIMULATE command failed for minimaneuver: MINI_1
   Aborting Execution.
ID = 0


---- END: ERROR ----


---- START: ERROR ----

Adams/Solver run terminating due to STOP requested by user.


---- END: ERROR ----

  Termination status=-995

Terminating Adams/Car usersubs...


Finished -----
Elapsed time = 3.64s,  CPU time = 3.85s,  105.92%
Simulation is complete.