A wheel stability control system for an electric vehicle including an electric motor, a drive inverter, and an electronic control unit (ECU) including a computer readable, non-transitory memory (memory) and an electronic processing unit (EPU). The memory stores information including an optimal acceleration and deceleration curve and the electrical characteristics of the electric motor. The EPU calculates the electrical moment of the electric motor from inputs from the drive inverter and the electrical characteristics of the electric motor. The ECU compares the electrical moment and the angular speed of the motor with the optimal acceleration and deceleration curve, and if the acceleration or deceleration of the electric motor is out of a predetermined range when compared to the optimal acceleration and the optimal deceleration, it reduces the electrical moment applied by the electric motor.

A system and a method for heating a component of an electric vehicle may be particularly beneficial in cold weather places and/or during winter time. The vehicle may be primarily powered by a main battery. The system may include a supplementary battery being metal-air battery including an electrolyte, for extending the driving range of the electric vehicle and a reservoir tank for holding an electrolyte volume for the metal-air battery, the electrolyte may be heated to a desired temperature. The system may further include a heat exchanger for conveying heat from the electrolyte volume, said heat is conveyable to said passenger's cabin.

A system includes a reference speed module and a motor control module. The reference speed module is configured to determine a reference speed range based on a speed of a left wheel of a pair of front or rear wheels of a vehicle and a speed of a right wheel of the pair of front or rear wheels. The right wheel is disconnected from the left wheel. The motor control module is configured to control at least one of a first electric motor and a second electric motor based on the reference speed range. The first electric motor is connected to the left wheel. The second electric motor is connected to the right wheel.

A method controls regenerative braking for a vehicle equipped with regenerative brakes and with a separate braking apparatus. The vehicle includes at least one first wheel and at least one second wheel. The separate braking apparatus is applied to the at least one first wheel and to the at least one second wheel. The regenerative brakes are applied to the at least one first wheel only. The method includes receiving a speed value of the first wheel and a speed value of the second wheel, estimating a value of a parameter representing a slip associated with the regenerative braking as a function of the speed value of the first wheel and as a function of the speed value of the second wheel, and forming a regenerative braking setpoint value as a function of the estimated value of the parameter representing slip associated with the regenerative braking.

A method and system for controlling a vehicle that includes a first propulsion system with a first torque generator and coupled to a first drive member, a second propulsion system with a second torque generator and coupled to a second drive member. The method includes measuring a speed of the first drive member, estimating a speed of the first drive member using a model of the first propulsion system that includes a modeled first rotational inertia and a modeled first translational inertia that are rigidly connected to each other and a model of a first coupling between the modeled first propulsion system and a model of the second propulsion system, and comparing the measured speed of the first drive member to the estimated speed of the first drive member.

A method and system for controlling a vehicle that includes a first propulsion system with a first torque generator and coupled to a first drive member, a second propulsion system with a second torque generator and coupled to a second drive member. The method includes measuring a speed of the first drive member, estimating a speed of the first drive member using a model of the first propulsion system that includes a modeled first rotational inertia and a modeled first translational inertia that are rigidly connected to each other and a model of a first coupling between the modeled first propulsion system and a model of the second propulsion system, and comparing the measured speed of the first drive member to the estimated speed of the first drive member.

An electric motor controller adapted to provide anti-lock braking of an electric traction motor for an electric vehicle is disclosed herein. The electric motor controller comprises a torque demand input for receiving a torque demand input signal based on a request from an operator of the electric vehicle and a torque demand adjuster adapted to adjust the torque demand input signal and to provide an adjusted torque demand signal. The torque demand adjuster is configured to adjust the torque demand signal such that the motor is controlled to reduce the difference between a motor speed and an estimated speed of the electric vehicle.

According to an embodiment of the present disclosure, a driving force control apparatus for a vehicle includes: a front-wheel driver; a rear-wheel driver; a wheel speed detector; a wheel vibration calculator; an estimated speed calculator that calculates an estimated vehicle speed of the vehicle; a slip-rate calculator that calculates a slip rate of each wheel; and a driving controller that reduces a driving force of the front wheel driver or the rear wheel driver when a slip rate of each wheel is greater than a preset slip rate value. The estimated speed calculator determines that the estimated vehicle speed is greater than an actual speed of the vehicle when the vibration value calculated by the wheel vibration calculator is greater than a preset vibration value.

An electrified vehicle disclosed in the present specification includes: a motor configured to rotate a drive wheel of the electrified vehicle; a sensor configured to detect a motor rotation number that is the number of rotations of the motor; and a control device configured to perform feedback control of the motor rotation number based on a value detected by the sensor. The control device is configured to perform during the feedback control a process of extracting a vibration component in a predetermined frequency band from the value detected by the sensor, a process of calculating an integrated value by integrating the extracted vibration component for a predetermined period, and a process of determining whether the calculated integrated value falls within a predetermined abnormal range.

Systems and methods to automatically detect and respond to driving on a deformable surface are provided. A system can determine, for a first time interval, a difference between an expected acceleration of a vehicle and an actual acceleration of the vehicle measured via one or more sensors of the vehicle. The system can detect, for the first time interval, a condition for the vehicle to increase a first slip target set for the vehicle. The system can increase the first slip target set for the vehicle to a second slip target responsive to the difference greater than or equal to a threshold and the detection of the condition.