Hill-start assist systems for electric vehicles and methods thereto.

Abstract

This invention concerns a hill-start assist system for electric vehicles and how to do so. This hill-start assist system for electric vehicles consists of a control unit. Drive system, transmission control unit, electronic control unit (ECU), and motor drive unit. The electronic control unit (ECU) processes signals from the control unit. The drive and signals from the gear shift control unit, along with the motor speed, are used to... Calculate the optimal torque to control the motor in a way that matches the acceleration specified by the driver. The following are methods to assist electric vehicles in starting on inclines: The process of estimating the mass of a vehicle, where the vehicle's mass includes the mass it is carrying. On all vehicles, considering the components of the total forces acting on the vehicle along the axis. steep The torque compensation process involves adjusting the torque compensation value (K (formula)) which varies according to the mass of the vehicle. The vehicle was obtained by estimating the vehicle's mass and the angle of the slope. The process of correcting torque compensation that varies with vehicle speed (V-speed) using... Hill Start Assist Control (KHAC) The process of assisting in starting on a hill using the relationship of hill start compensation. The torque compensation adjustment (KHAC) is obtained by combining the torque input with the driver's operating torque. (TDriver) derived from the relationship between signals from the drive control unit and signals from the unit... Control the gear changes and motor speed at that moment;