A power transfer system includes: a compact mobility; a ground unit disposed on a second lane which is a driving lane for the compact mobility, the ground unit being capable of wireless power transfer; and a controller that controls the ground unit. The compact mobility has an amount of electric power that can be stored less than a predetermined amount, and travels at a speed dependent on electric power wirelessly received from the ground unit. When a pedestrian is sensed in the second lane, the controller forces the compact mobility to decelerate by reducing transmission power from the ground unit to the compact mobility, as compared to when the pedestrian is not sensed in the second lane.

Vehicles can employ onboard telematic monitoring devices to collect vehicle and operation data, such as for improved vehicle fleet management. Such telematic monitoring devices are dependent on power from a vehicle, such that data collection and communication can be interrupted if a telematic monitoring device is disconnected or has a poor connection. The present disclosure relates to battery devices, which provide power to telematic devices as needed in order to maintain data collection and communication, or other more limited functionality. The present disclosure also relates to systems including battery devices, and methods for operating battery devices.

A method for implementing virtual internal combustion engine vibration in an electric vehicle includes collecting operation variable information for determining a torque instruction and implementing the virtual internal combustion engine vibration, determining a virtual internal combustion engine vibration characteristic based on the collected operation variable information, determining a vibration torque instruction having the determined virtual internal combustion engine vibration characteristic, correcting the vibration torque instruction by correcting the determined virtual internal combustion engine vibration characteristic of the vibration torque instruction and/or a value of the vibration torque instruction, based on a basic motor torque instruction determined by the collected operation variable information and preset backlash occurring area information, determining a final motor torque instruction using the basic motor torque instruction and the corrected vibration torque instruction.

A method of controlling a tone of an electric vehicle (EV) includes calculating order components from vibration signals of a rotating motor of the EV, extracting an N.sup.th order component having a determination coefficient R.sup.2 which represents linearity with respect to an output torque of the motor and is greater than or equal to a predetermined value, converting an RPM of the motor into a frequency and calculating an order frequency, arranging the order components by applying a vibration level of the N.sup.th order component to a level of the order frequency to be output and setting an EV mode tone, and in a deceleration of the EV, determining a deceleration condition and applying the vibration level of the N.sup.th order component to level control of the order frequency.

An exemplary method includes controlling a rotation rate of a rotor in a vehicle, detecting that an electric motor system is electrically energized and rotating the rotor at least at a minimum rotation rate that is greater than zero in response to the electric motor system being electrically energized. The rotor may be rotated at least at the minimum rotation rate when the electric motor system is energized and the motor is turned-off.

An apparatus includes a capture device and a processor. The capture device may be configured to generate pixel data corresponding to an exterior view from a vehicle. The processor may be configured to perform operations on video frames generated from the pixel data to detect a moving object in the video frames, determine a predicted path of the moving object, determine a probability of the moving object colliding with the vehicle based on the predicted path, determine whether the vehicle is stationary and generate a control signal if the vehicle is stationary and the probability is greater than a pre-determined threshold. The control signal may be configured to enable a response to alert a person in control of the moving object.

A vehicle including a powertrain system that includes an electric machine electrically connected to a power inverter is described, wherein the powertrain system is operative in an electric vehicle mode to generate propulsion torque. A method for controlling the powertrain system includes determining a vehicle speed, and determining a preferred audible sound to be generated by the powertrain system when operating in the electric vehicle mode at the vehicle speed. A control signal for the power inverter is determined, and is associated with operating the powertrain system in the electric vehicle mode at the vehicle speed. The preferred audible sound is incorporated into the control signal for the power inverter, and the power inverter is controlled to operate the electric machine employing the control signal and the preferred audible sound.

An acceleration sound generation device for a vehicle using at least one of an acceleration operation of the vehicle, an acceleration force generated by the acceleration operation, and an acceleration state obtained by the acceleration force as a control parameter. The acceleration sound generation device includes a sound generation unit and an acceleration sound delay unit. The sound generation unit generates an acceleration sound in a vehicle passenger compartment in response to an acceleration sound signal that is generated based on the control parameter. The acceleration sound delay unit delays output of the acceleration sound by the sound generation unit such that the acceleration sound changes and is delayed with respect to a change in the control parameter. The acceleration sound delay unit sets a delay degree of the acceleration sound at a rising time of the control parameter separately from at a falling time of the control parameter.

In a method of operating a drive device, a sound signal is generated as a function of at least one operational and/or state variable. An electric machine of the drive device is hereby as a sound generator to output the sound signal. The sound signal can be determined from a time gradient of the operational and/or state variable.

An object is to provide an electroacoustic transducer consisting of a vibration plate and an exciter and having good flexibility. The object is solved by providing a vibration plate and an exciter, in which a maximal value of a loss tangent of the exciter at a frequency of 1 Hz according to dynamic viscoelasticity measurement is 0.08 or more in a temperature range of 0° C. to 50° C., and a product of a thickness of the exciter and a storage elastic modulus at a frequency of 1 Hz and 25° C. according to the dynamic viscoelasticity measurement is at most three times a product of a thickness of the vibration plate and a Young's modulus.