给用Multisim的朋友一个惊喜、、

仿真时候总是出现错误

Multisim Convergence Assistant Summary Report
 
 Convergence Assistant Summary Report

Outcome:

 The Convergence Assistant was unable to correct the problem.  Please consult the help documentation for more information about simulation errors and how to correct them.

Multisim Convergence Assistant Log
 
Step 1: Verifying Error Scenario
 ...completed.

Step 2: Setting parameter Integration Method (METHOD) to Gear
 Simulating...
   ...completed.  Simulation error still occurs.

Step 3: Setting parameter Initial Conditions to Set To Zero
 Simulating...
   ...completed.  Simulation error still occurs.

Step 4: Setting parameter MaximumTimestep (TMAX) to 1.0000e-004
 Simulating...
   ...completed.  Simulation error still occurs.

Step 5: Setting parameter MaximumTimestep (TMAX) to 1.0000e-003
 Simulating...
   ...completed.  Simulation error still occurs.

Step 6: Setting parameter Relative error tolerance (RELTOL) to 1.0000e-002
 Simulating...
   ...completed.  Simulation error still occurs.

Step 7: Setting parameter Shunt resistance from analog nodes to ground (RSHUNT) to 1000000000
 Simulating...
   ...completed.  Simulation error still occurs.

Step 8: Setting parameter Shunt resistance from analog nodes to ground (RSHUNT) to 100000000
 Simulating...
   ...completed.  Simulation error still occurs.

Step 9: Setting parameter Shunt resistance from analog nodes to ground (RSHUNT) to 10000000
 Simulating...
   ...completed.  Simulation error still occurs.

Step 10: Setting parameter DC iteration limit (ITL1) to 200
 Simulating...
   ...completed.  Simulation error still occurs.

Step 11: Setting parameter DC iteration limit (ITL1) to 300
 Simulating...
   ...completed.  Simulation error still occurs.

Step 12: Setting parameter Minimum conductance (GMIN) to 1.0000e-007
 Simulating...
   ...completed.  Simulation error still occurs.

Step 13: Setting parameter MaximumTimestep (TMAX) to 1.0000e-004
 Simulating...
   ...completed.  Simulation error still occurs.

Step 14: Setting parameter MaximumTimestep (TMAX) to 1.0000e-005
 Simulating...
   ...completed.  Simulation error still occurs.

Convergence Assistant completed unsuccessfully.

老版本的