Translational Multibody Interface cannot solve velocity
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Benedikt Wanke el 20 de Nov. de 2021
I try to combine a multibody model with a hydraulic model. For this I used the Translational Multibody Interface block between the Double Acting Hydraulic Cylinder block and a prismatic Joint block with enabled velocity and force. But in this case the following error occurs:
An error occurred while running the simulation and the simulation was terminated
- ['Knickgelenk_V03/Solver Configuration2']: Initial conditions solve failed to converge.
- Nonlinear solver: Linear Algebra error. Failed to solve using iteration matrix.
- The model may not give enough information to make it possible to solve for values of some of its variables. Specific advice is given below. all components and nodal across variables involvedCannot solve for one or more variables: 'Double_Acting_Hydraulic_Cylinder.C.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.R.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_A.C.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_A.R.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_A.chosen_converter.C.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_A.chosen_converter.R.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_B.C.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_B.R.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_B.chosen_converter.C.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.conv_B.chosen_converter.R.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.hs.C.v' (Velocity) 'Double_Acting_Hydraulic_Cylinder.hs.R.v' (Velocity) 'Translational_Multibody_Interface1.C.v' (Velocity) 'Translational_Multibody_Interface1.R.v' (Velocity) Dependency found among topology equations. Check for missing reference node.
If the Translational Multibody Interface block and the Double Acting Hydraulic Cylinder block were replaced by Hydraulic Actuator Multibody block, the model seems to do something whenever not the things I want it to do, because the cylinder moves even when the valve is closed and doesn't change its motion if the valve setting changes.
I would be very happy to receive helpful answers and thank you in advance!
An overwhelmed Simscape apprentice