Project 1

Forward Modelling Approach:

The forward Modelling approach is also known as cause-effect, engine- to wheel or rear to front method. The direction of calculation is the same as the direction of positive power flow, from engine to wheel.

The approach is based on vehicle dynamics equations and the behaviour of each powertrain components and their dynamic interaction.

The driver controller is required to control the vehicle to follow a desired speed and the set the start of the calculations . the controller is implemented to model the driver that will either push the accelerator or the brake pedal to match the desired speed which enables to study the driver behaviour. The controller is used as a part of a feedback loop that determine the energy required to drive the vehicle.

Conventional Model:

• This model includes a driver model that provides input commands accelerations and brake power torque depending on the drive cycle and the actual speed of the vehicle.
• A control model that controls the engine torque to the desired range and changes the gear command and control brake torque according to the driver input.
• The transmission model that gives the actual speed of the vehicle as feedback to the driver model. The model includes the engine , transmission, differential, wheel and vehicle dynamics models separately.