我正在尝试测量在 Matlab Simscape 中建模的四连杆机构的扭矩。作用在机构上的唯一力是重力。因此，当旋转接头上的扭矩设置为“无”并且阻尼设置为高于零的值时，该机构从初始位置移动到稳态位置。
但是，我想测量曲柄接头上的扭矩，以阻止系统在重力作用下移动。为此，我将驱动扭矩设置为自动计算。但我收到以下错误消息：
In the dynamically coupled component containing Revolute Joint 'ITF_Flap_model_v4/Base-Crank joint',
there are more joint primitive degrees of freedom with automatically computed force or torque (1) than with motion from inputs (0).
In general, the equations of motion do not have a unique solution. Solve this problem by increasing the number
of joint primitives with motion from inputs or reducing the number of joint primitives with automatically
computed force or torque. Resolve this issue in order to simulate the model.
谁能帮我解决这个问题？