Problem in simulation of electric vehicle

Warm regards. I am an M.Tech final year student working on Electric Vehicle in my project work, finding problem with the simulation part. I have designed the vehicle using libraries including drive cycle, longitudinal driver, controlled pwm voltage, current and voltage sensors, controlled current and voltage sources, h bridge, dc motor, battery and the vehicle body. No error or warning is shown after simulation. I am a bit confused about the parameters to be given to each library and subsystems. The scope shows the reference voltage curve from the input drive cycle and the actual velocity profile of the EV and both these graphs are required to coincide but the actual velocity curve everytime comes to be a straight horizontal line even after changing various parameters. Can anyone please help me with this. I would be so grateful. Thank you