Research Projects

Anti-lock braking system is introduced in the present generation commercial vehicles to prevent wheel lock-up. This helps to improve the safety of the vehicle and prevent the wheels from skidding during braking. This braking feature is used in popular vehicles like Mahindra XUV700, Hyundai Creta, Maruti Suzuki Brezza etc. As per the latest notification from the transport ministry, anti-lock braking system is being made compulsory for two wheelers. This project aims at the development of alternate braking control strategies and implementation using electric motor controller for battery electric vehicle of M1 category. The major aim is to integrate the feature of anti-locking braking system within the motor controller by achieving controlled torque from the motor through phase current control. The purpose is to enhance the dynamic performance of the braking system in order to achieve greater precision in terms of braking control as the time constant involved into an electric motor torque control is much less compared to the traditional hydraulic system. The objectives of the project will be developing control techniques (considering the voltage, current and thermal stability of the electric motor drive system) which will integrate the feature of anti-locking braking system in the motor control unit along with the regenerative braking system used in electric vehicles. The work will be initiated with the development of mathematical model of the complete system. This mathematical model will be used for the control algorithm formulation, design, and stability analysis. The project will involve the development of experimental prototype containing a three-phase motor and its associated controller. The control algorithms are to be implemented on an embedded system platform and will be tested using the same prototype. The characteristics of the vehicle will also be emulated to evaluate the dynamic performance of the proposed control strategies. This will be used to simulate different scenarios for the vehicle and establish the efficacy of the controller.