I'm using Simscape Fluids on MATLAB 2019a, and my model is not matching my team member's hand calculations at all. Currently we are designing a hydraulic bicycle for use in a competiton. I understand losses play a factor in our design, but I am getting 8.168 mph out of the model when it's expected to be around ~20 mph.
All of the hand calculations are accurate up to the motor subsystem, which makes me think somehting is wrong with the motor model. Also, in the motor subsystem, the inertia was calculated by finding the effective intertia on the motor shaft by summing the kinetic energies in the system. The damping coefficient for the rotational damper was found by taking the ideal motor torque divided by the ideal motor angular velocity. I can post calculations for these if necessary.
I was hoping that someone could take a look at my model (particularly the motor subsystem), and see if they see anything incorrect with the system.
If it's useful, we're using a Eaton 26702-DAB motor (0.54 in^3/rev), and a Parker MGG20010-BC1B3 pump (0.218 in^3/rev).
Thank you for the help.