A control apparatus is provided in a rotary electric machine driving system that includes a rotary electric machine for a vehicle and a control unit that controls driving of the rotary electric machine. The apparatus includes a malfunction determination section determining whether or not a system malfunction that requires torque limitation has occurred, a to-be-avoided state determination section determining whether or not the vehicle is in a to-be-avoided state, a torque limitation section limiting an output torque outputted from the rotary electric machine to a limiting torque smaller than a command torque, when the system malfunction is determined to have occurred and the vehicle is not in the to-be-avoided state, and a torque limitation relaxation section permitting the output torque to be a limitation relaxation torque larger than the limiting torque, when the system malfunction is determined to have occurred and the vehicle is in the to-be-avoided state.

When a stepping amount of an accelerator pedal is 0%, torque Ta is generated with the rotating speed being zero. When retreat is occurred in the slope start, the rotating speed is reduced. When the rotating speed is reduced, the torque is increased. Thus, the retreating force finally matches the propulsion force. As a result, the retreat becomes uniform motion. The decision of torque in such a manner does not require a value of a vehicle weight.

Controller determines an output limit value that defines an upper limit of a current or power recommended for suppressing cell deterioration based on a voltage, a current, and a temperature of each cell, and notifies host controller in electric vehicle of the determined output limit value. When electric vehicle climbs a hill, controller calculates a current value or power value to be discharged from power storage unit, the current value or power value being required for electric vehicle to climb the hill at a speed not less than a set minimum speed, while suppressing an amount of deterioration of cells within an allowable range, and when the calculated current value or power value is larger than the output limit value, replaces the output limit value with the calculated current value or power value.

A control system includes a bicycle includes a crank, a motor and a battery which provides power to the motor. An acceleration detector is connected to the bicycle and detects the riding acceleration speed of the bicycle. A torque detector is connected to the bicycle and consistently detects treading of the crank and generates multiple instant treading torque values. A controller is connected to the bicycle and electrically connected to the motor, the battery, the acceleration detector and the torque detector, and receives the riding acceleration speed, the treading acceleration speed and the instant treading torque values so as to control output of the motor and the battery instantly.

A method for damping juddering in the drive train of a vehicle having an electric motor as the drive motor, and a vehicle having a closed-loop control system to carry out the method. The method includes calculating an electric motor setpoint torque for actuating the electric motor from an electric motor request torque which corresponds to a current request for a torque, and calculating a correction torque as a function of the electric motor request torque and a correction factor which is determined from a rotational speed of the electric motor.

A control apparatus of an electric vehicle including a motor capable of outputting a vehicle driving force that is a driving force acting on the electric vehicle, and a brake device configured to generate a vehicle braking force that is a braking force acting on the electric vehicle in accordance with a brake operation performed by a driver, includes: a controller. The controller is configured to start a first hill-hold control for maintaining the electric vehicle in a stopped state by using the vehicle driving force generated by the motor as a stopping force for stopping the electric vehicle when the brake operation is interrupted.

A control device for a transport vehicle configured to travel with a driving force output from an electric motor is provided. When the transport vehicle is driven by a driving force of the electric motor and a variation rate is equal to or less than a predetermined value while a parameter relating to a traveling speed of the transport vehicle is less than a first predetermined value, the control device sets a threshold value, at which an output limit of the electric motor is started based on a parameter relating to a temperature of the electric motor or a temperature of an electric device for driving the electric motor, to a variable value corresponding to a required driving force to the transport

A method includes controlling an electrified vehicle by automatically commanding an output torque from an electric machine if the electrified vehicle is in park and an engine start or stop request has been received. A road grade may be used to determine whether or not to command the output torque.

A method includes controlling a torque output of an electric machine of an electrified vehicle based on estimated loads present during a transmission engagement of the electrified vehicle. Controlling the torque output may include merging a first feed-forward torque with a feedback torque if an input shaft of a transmission gearbox is spinning, or merging a second, different feed-forward torque with the feedback torque if the input shaft is not spinning.

A vehicle control system determines an upper non-zero limit on deceleration of a vehicle to prevent rollback of the vehicle down a grade being traveled up on by the vehicle. The upper non-zero limit on deceleration is determined by the controller based on a payload carried by the vehicle, a speed of the vehicle, and a grade of a route being traveled upon by the vehicle. The controller is configured to monitor the deceleration of the vehicle, and to automatically prevent the deceleration of the vehicle from exceeding the upper non-zero limit by controlling one or more of a brake or a motor of the vehicle. The controller also is configured to one or more of actuate the brake or supply current to the motor of the vehicle to prevent rollback of the vehicle while the vehicle is moving up the grade at a non-zero speed.