江湖救急

> dc (iperror yes,pins all,siglist /...
The no_ramping algorithm failed. Trying the dyn_ramping algorithm.
The dyn_ramping algorithm failed. Trying the gmin_ramping algorithm.
The gmin_ramping algorithm failed. Trying the static_ramping algorithm.
The static_ramping algorithm failed. Trying the den_ramping algorithm.
Automatic algorithm selection exhausted
*** ERROR "MAST_NO_NUM_EQUATION" *** Numerically no equation at /freenet1.
*** ERROR "MAST_NO_NUM_EQUATION" *** Numerically no equation at /freenet2.
*** ERROR "ALG_SINGULAR_JACOBIAN" *** Singular Jacobian matrix.

Some possible causes for a singular Jacobian matrix:
- Model operating outside of its intended region of operation.
- Node/subsystem with no connection to the reference (floating).
- Current loops (voltage sources/inductors in parallel).
- Missing equation and/or missing variable reference.

Partial results were written to the initial point "dcerr".
execution time= 0.0312 sec.
messages given: 3 errors
>
saber进行dc分析报错    这么解决啊