How to get closer to experimental values by simulation ?

Hello, we use Altair Flux 2020 in order to simulate our BLDC motor. Recently, i wanted to compare the experimental values with the simulation. I got really different values. I join the graph of Torque/Speed and Torque/Current. The curve of Torque/speed is not to far of the exmperimental values and I may already have an idea of the solution. But for the other curve It's to far of the reality. Do you have any advice to resetting the model ? Do you need further information to answer me ?

Thanks in advance,

Théo Briquet