Abstract: A method estimates a weight of a motor vehicle including front and rear wheel assemblies, using a smart communication device, after loading of the vehicle. The method includes identifying the vehicle in the smart communication device, using a camera of the smart communication device to capture and process a photograph of at least one wheel with at least one point of the vehicle brought to sink down jointly upon the loading of the vehicle with a suspension of the wheel of the vehicle, determining a clearance of the wheel assembly opposite the photographed wheel, calculating a load value on the wheel assembly of the photographed wheel and a load value on the opposite wheel assembly as a function of the respective clearances of these wheel assemblies, to determine a total load value, and using the smart communication device to inform a user of a load state of the vehicle.

Abstract: A method estimating weight of a motor vehicle including front and rear wheel assemblies using a smart communication device after loading the vehicle, including: (i) identifying the vehicle in the smart communication device; (ii) using a camera of the smart communication device, capturing and processing a photograph of at least one vehicle wheel after loading to determine displacement of a corresponding wheel assembly; (iii) using at least one accelerometer or inclinometer of the smart communication device, measuring at least one tilt angle of the vehicle after loading to determine displacement of the opposite wheel assembly and the corresponding wheel assembly; (iv) using a calculation unit of the smart communication device, calculating load values on the corresponding and opposite wheel assemblies based on respective displacements of the wheel assemblies, to determine a total load vehicle value; and (v) indicating by the smart communication device a vehicle load state to the user.

Abstract: A method estimating weight of a motor vehicle including front and rear wheel assemblies using a smart communication device after loading the vehicle, including: (i) identifying the vehicle in the smart communication device; (ii) using a camera of the smart communication device, capturing and processing a photograph of at least one vehicle wheel after loading to determine displacement of a corresponding wheel assembly; (iii) using at least one accelerometer or inclinometer of the smart communication device, measuring at least one tilt angle of the vehicle after loading to determine displacement of the opposite wheel assembly and the corresponding wheel assembly; (iv) using a calculation unit of the smart communication device, calculating load values on the corresponding and opposite wheel assemblies based on respective displacements of the wheel assemblies, to determine a total load vehicle value; and (v) indicating by the smart communication device a vehicle load state to the user.

Abstract: A method and device detect the imbalance of a vehicle wheel. The method includes measuring a rotation speed of the wheel while the vehicle is moving, and calculating a filtered value by applying at least one step of band-pass filtering to the measured rotation speed value of the wheel. A position of a pass-band of the band-pass filtering step is offset while moving as a function of the rotation speed of the wheel.

Abstract: A method for estimating the interval within which the total weight of an automobile vehicle is situated includes defining at least two intervals of weights, including determining a first situation in which the total weight of the vehicle belongs to the first interval and a second situation in which the total weight of the vehicle belongs to the second interval, calculating probabilities of being in the first or second situation knowing a value of the weight, calculating a risk of choosing the wrong interval as a function of the calculated probabilities and of a cost associated with an erroneous decision, and determining the interval within which the total weight of the vehicle is situated as a function of the risk.

Abstract: A diagnostic method for an a posteriori analysis of behavior of a vehicle braking system, the braking system including a regenerative braking mechanism, an additional braking mechanism, and a distribution device, the method including storing, in a non-volatile memory, at least one current value of a braking parameter from the distribution device for subsequent analysis based on the at least one value stored in the non-volatile memory, wherein the storage is triggered by execution of at least one event.

Abstract: A method estimates a weight of a motor vehicle including front and rear wheel assemblies, using a smart communication device, after loading of the vehicle. The method includes identifying the vehicle in the smart communication device, using a camera of the smart communication device to capture and process a photograph of at least one wheel with at least one point of the vehicle brought to sink down jointly upon the loading of the vehicle with a suspension of the wheel of the vehicle, determining a clearance of the wheel assembly opposite the photographed wheel, calculating a load value on the wheel assembly of the photographed wheel and a load value on the opposite wheel assembly as a function of the respective clearances of these wheel assemblies, to determine a total load value, and using the smart communication device to inform a user of a load state of the vehicle.

Abstract: A method and device detect the imbalance of a vehicle wheel. The method includes measuring a rotation speed of the wheel while the vehicle is moving, and calculating a filtered value by applying at least one step of band-pass filtering to the measured rotation speed value of the wheel. A position of a pass-band of the band-pass filtering step is offset while moving as a function of the rotation speed of the wheel.

Abstract: A method and control system for a vehicle including a regenerating braking mechanism and a complementary braking mechanism, the method including: receiving at least one vehicle acceleration measurement value, at least one torque value applied by the regenerating braking system, and at least one complementary braking set value for the complementary braking mechanism, wherein the at least one value corresponds to at least one respective measurement moment during a braking transition; and estimating an efficiency coefficient of the complementary braking mechanism from the at least one received value.

Abstract: A diagnostic method for an a posteriori analysis of behavior of a vehicle braking system, the braking system including a regenerative braking mechanism, an additional braking mechanism, and a distribution device, the method including storing, in a non-volatile memory, at least one current value of a braking parameter from the distribution device for subsequent analysis based on the at least one value stored in the non-volatile memory, wherein the storage is triggered by execution of at least one event.

Abstract: A method for controlling a motor vehicle including driven wheels, a mechanism recovering energy generated by braking, and a torque transmission chain transmitting torque from the driven wheels to the energy recovery mechanism, the method including: a) acquiring a braking instruction and dynamic characteristics of the motor vehicle, b) controlling the energy recovery according to a control set point calculated as a function of the braking instructions and the dynamic characteristics acquired in a), and c) controlling the brakes according to a control set point calculated as a function of the braking instruction and the dynamic characteristics acquired in a). In b), the control set point for energy recovery is calculated by a preventive filter that filters the braking instruction to attenuate amplitude thereof around the resonant frequency of the torque transmission chain.

Abstract: A method for controlling a motor vehicle equipped with wheels, brakes, a recovery device for recovering energy generated in braking, and a torque transmission chain from the wheels to the recovery device, includes acquiring a braking instruction, measuring a measured value of a dynamic characteristic of the recovery device, calculating a first intermediate setpoint with a preventive filter which filters the braking instruction so as to attenuate an amplitude of the braking instruction around a resonance frequency of the torque transmission chain, calculating a second intermediate setpoint to damp oscillations of the torque transmission chain, controlling the recovery device according to an electric motor control setpoint calculated as a function of the first and second intermediate setpoints, and controlling the brakes according to a braking setpoint calculated as a function of the braking instruction.

Abstract: A method estimating weight of a motor vehicle including front and rear wheel assemblies using a smart communication device after loading the vehicle, including: (i) identifying the vehicle in the smart communication device; (ii) using a camera of the smart communication device, capturing and processing a photograph of at least one vehicle wheel after loading to determine displacement of a corresponding wheel assembly; (iii) using at least one accelerometer or inclinometer of the smart communication device, measuring at least one tilt angle of the vehicle after loading to determine displacement of the opposite wheel assembly and the corresponding wheel assembly; (iv) using a calculation unit of the smart communication device, calculating load values on the corresponding and opposite wheel assemblies based on respective displacements of the wheel assemblies, to determine a total load vehicle value; and (v) indicating by the smart communication device a vehicle load state to the user.

Abstract: A device for determining an operating state of an automobile from automobile data available on a CAN network of the vehicle, the device including a computer for mathematically processing the data to determine the operating state of the vehicle. The computer is hosted in a smartphone, a specific application for processing the data using the computer is implemented in the smartphone, recovery of the data from the CAN by the smartphone is carried out via a wired or wireless link, and the smartphone displays, via a graphical interface thereof, the operating state of the vehicle.

Abstract: A method and control system for a vehicle including a regenerating braking mechanism and a complementary braking mechanism, the method including: receiving at least one vehicle acceleration measurement value, at least one torque value applied by the regenerating braking system, and at least one complementary braking set value for the complementary braking mechanism, wherein the at least one value corresponds to at least one respective measurement moment during a braking transition; and estimating an efficiency coefficient of the complementary braking mechanism from the at least one received value.

Abstract: A method for estimating rolling resistance of a wheel of a moving vehicle, the vehicle including at least two wheels fitted with tires, the method including: measuring or estimating a value of angular velocity ? of rotation of at least one wheel; and measuring or estimating a value of torque T applied to the wheel; the method using an observer of dynamics of the wheel that is based on a sliding mode control theory, in which input signals are the value of the angular velocity ? of the wheel and the value of the torque T applied to the wheel.

Abstract: The invention relates to a method for controlling a vehicle (1) equipped with a means (10) for recuperating the energy generated under braking, comprising steps of acquiring a braking instruction, calculating a first intermediate setpoint using a preventive filter which filters said braking instruction at the resonant frequency of the drive train (20) of the vehicle (1), calculating a second intermediate setpoint, formulated so as to damp out the oscillations in the drive train (20) using a curative filter, controlling said regenerative means (10) on the basis of said first and second intermediate setpoints, and controlling the brakes (60, 70). According to the invention, the second intermediate setpoint is calculated as a function of a forecast value of a dynamic characteristic of the recuperative means, estimated using a predictive mathematical model.

Abstract: A method for controlling a motor vehicle including driven wheels, a mechanism recovering energy generated by braking, and a torque transmission chain transmitting torque from the driven wheels to the energy recovery mechanism, the method including: a) acquiring a braking instruction and dynamic characteristics of the motor vehicle, b) controlling the energy recovery according to a control set point calculated as a function of the braking instructions and the dynamic characteristics acquired in a), and c) controlling the brakes according to a control set point calculated as a function of the braking instruction and the dynamic characteristics acquired in a). In b), the control set point for energy recovery is calculated by a preventive filter that filters the braking instruction to attenuate amplitude thereof around the resonant frequency of the torque transmission chain.