PID Based Control of Electric Vehicle Drive Line with Backlash

As the interest about electric vehicles has increased due to factors such as the raising fuel price and pollution, the number of torque control strategies are being researched to improve the drivability of EVs. Modern vehicles need a high degree of refinement to meet customer demand. Drivability of vehicle can be improved through recent research in automotive electronic control. Rapid boost of torque by an electric motor creates undesired torsional oscillations, leading to problems which regard to comfort drivability, wheel slip and increased fatigue of driveline components. In this research paper, we have designed torque management strategies using PID for traction and cruise control applications, to damp out driveline oscillations, and to improve drivability of EVs considering backlash as disturbance. A model-based design approach has been adopted in this research since it can be used effectively for designing, developing and prototyping of controllers. Accordingly, the scope of this research falls under 3 categories: modeling, control design and control evaluation.