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 constraint can no longer be satisfied.
ADAMS is unable to satisfy the constraint for: JOINT testrig_1.JOINT_22 .
ERROR: Lockup detected
盼高手赐教！！！！
发表于 2009-2-18 17:34
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