求助：运行仿真出错
运行仿真出错，提示如下：WARNING: The symbolic refactorization failed.The matrix is structurally singular
at time = 3.0.
WARNING: ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
NOTE:The set of redundant constraints has changed at time = 3.0.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
WARNING: The symbolic refactorization failed.The matrix is structurally singular
at time = 3.0.
ERROR: The simulation is terminating at time = 3.0.
ADAMS can not solve the equations of motion because the mechanism has
"locked up." At least one constraintcanno longer be satisfied.
ADAMS is unable to satisfy the constraint for: JOINT testrig_1.JOINT_22 .
ERROR: Lockup detected
盼高手赐教！！！！ 可以试试改求解器，如果是用的默认求解器的话，可以将I3换成SI2或S11
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