Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Compagnie Generale Des Establissements Michelin

Michelin Recherche Et Techniques S.a.

Conception Et Developpement Michelin S.a.

Thierry Auguet

Olivier Joye

Jean-Louis Linda

Pierre-Alain Magne

Marc Sebe

Gino Paganelli

Pierre Varenne

Sylvain Grandjean

A sound measurement system intended to be installed on a motor vehicle, the system comprising: a microphone, an element for supporting the microphone, mechanical means for protecting the microphone against various projections (water, dust, etc.) from the environment of the vehicle, and mechanical means for protecting the microphone from airborne noise originating from the routing of the sound wave between the source and the measurement (cavity noise) and from the environment of the measuring system (turbulence around the measuring device), the various mechanical protection means being separate or combined. A motor vehicle may be provided with such a system.

Sound measurement system for a motor vehicle

A device is provided for monitoring an electrical accumulation battery that includes a set of cells connected in series. The device includes means for measuring a current intensity delivered by the battery; means for measuring an electrical voltage between an upstream connection point and a downstream connection point of each cell of the battery; a recorder that records a zero-current electrical voltage between the upstream connection point and the downstream connection point of each cell of the battery; and an electrical resistance estimator configured to periodically estimate an electrical resistance of each cell in the battery, between the upstream connection point and the downstream connection point.

Device for monitoring an electrical accumulation battery and associated method

A connection devicefor connecting a batteryto an electric or hybrid motor vehicle, comprising at least one inputcapable of being connected to a terminal of the battery and an outputcapable of being connected to a first terminal of an electrical circuit of the vehicle. The devicealso comprises an electrical-circuit cutoff devicemounted in series between the inputand the outputof the connection device. The cutoff devicecomprises a pyrotechnic igniter connected to control terminals, the electrical opening of the cutoff devicebeing controlled by an electrical control signal applied to the said control terminals.

Device for connecting a battery to an electric or hybrid vehicle, and battery housing comprising said connection device

A device for connectionof a batteryto an electric or hybrid motor vehicle, comprising at least one inputcapable of being connected to a first terminalof the battery and at least one outputcapable of being connected to a first terminal of an electrical circuit of the vehicle. The devicealso comprises: a device for measuring the voltagebetween the first terminalof the battery and a reference potential, and a control unitcapable of receiving the voltage values measured by the voltage-measuring device, capable of determining an insulation resistance between the first terminalof the battery and the reference potential, and capable of connecting or keeping connected the first terminalof the battery and the first terminal of the electrical circuit if said insulation resistance is greater than a determined threshold.

Connection device comprising a control unit, battery case comprising such a connection device and method for controlling such a battery case

An accumulator assembly comprising a plurality of electrical energy accumulator elements () superposed on a stacking axis and each comprising connecting electrodes (), wherein it comprises at least one electrically conductive spacer () arranged axially between the connecting electrodes of two adjacent accumulator elements and electrically linked to at least one of said elements, and at least one connecting plug () mounted inside a void () of the conductive spacer and linked to an electric cable () for a voltage measurement.

Accumulator assembly for a battery of an electric or hybrid vehicle, provided with a connecting strut

The accumulator assembly comprises a plurality of electrical energy accumulator elementseach comprising connecting electrodes, assembly meanslinking said electrodes, a connectorfor connecting an external component to the assembly, and a connector support. The supportcomprises a mounting baseborne by the assembly means and a fixing lugsupporting the connector and configured in such a way as to allow a movement of the connector relative to the mounting base in response to an external stress exerted on said connector and/or on the fixing lug.

Accumulator assembly for a battery of an electric or hybrid vehicle, provided with a deformable connector support

A vehicle steering control system includes a controller for determining control angles for actuators used for steering the vehicle based on at least a speed of the vehicle and a steering signal. The controller includes a unit, a module, and a block. The unit determines an equivalent steering angle of a steered wheel of an equivalent bicycle model according to the steering signal, and also determines a transverse coordinate of an instantaneous center of rotation of the vehicle. The module controls a steering behaviour of the vehicle to enable a longitudinal coordinate of the instantaneous center of rotation of the vehicle to be determined from the speed of the vehicle and a maximum transverse acceleration parameter of the vehicle. The block determines the control angles from the longitudinal coordinate and the transverse coordinate. The maximum transverse acceleration parameter of the vehicle is fixed for the vehicle or is variable based on conditions of operation of the vehicle.

Vehicle steering control without mechanical connection between steering wheel and steered wheels

A steering control system is provided for a vehicle with a steered wheel. The vehicle includes a control member that maneuvers within a range between leftward and rightward stops, and that delivers a requested steering signal. The steering control system includes: an actuator that acts on a steering angle of a steered wheel, and a controller that determines a control angle for controlling the actuator to steer the vehicle. The controller includes: a first unit that determines, according to the vehicle's speed and a parameter characteristic of the vehicle's equilibrium, a maximum steering angle on a steered wheel of an equivalent bicycle model of the vehicle, a second unit that determines a gearing-down ratio according to the range of the control member and the maximum steering angle, and a third unit that determines a steering angle according to the gearing-down ratio and the requested steering signal.

Vehicle steering control without mechanical connection between the steering wheel and the steered wheels

Steering control system for a land vehicle with at least four steered wheels (AvG,AvD,ArG,ArD), the system comprising one actuator per steered wheel (AvG,AvD,ArG,ArD). The system comprises a control member () available to a driver and delivering a demanded steering angle (&#x3b8;), a steering control unit () which, by way of input variable, uses at least the said demanded steering angel (&#x3b8;) to determine a steering control angle for operating the said actuator, and means () for detecting a lock-up of one of the steered-wheel actuators, which are capable of delivering an alarm signal identifying an actuator that has locked up. The steering control unit has at least one normal mode and at least one degraded mode in the event of an actuator becoming locked up, the degraded mode calculating the steering control angle (&#x3b1;p) of the non-locked wheels by imposing a first degraded-mode strategy whereby the instantaneous center of rotation (CIR) of the vehicle lies more or less on the straight line perpendicular to the plane of the locked wheel and passing through the center of the ground-contact area of the locked wheel, in a position that is dependent on the demanded steering angle (&#x3b8;).

Vehicle steering system comprising a degraded operating mode in case of breakdown of a wheel steering actuator

Traction chain for a series hybrid vehicle comprising an engine () which drives an alternator (), an electric traction motor (), a inverter which enables the electric traction motor to be operated at a torque set value CC, an accelerator available for use by the driver of the vehicle, an actuator () which acts on the engine, a controller () for the traction chain loaded with a model of the engine's operation and loaded with a program which, from the position of the accelerator, allows a pair (R, PP) of set values to be obtained for the revolution speed Rof the engine and for the position of the actuator (), the said controller making it possible to control the position of the said actuator on the basis of the said set value PPfor the position of the actuator and to calculate a torque set value CCfor the electric traction motor or motors as a function of the deviation between the measured speed Rand the set value Rfor the revolution speed of the engine.

Growing community of inventors

Chapelle Glâne, Switzerland

Thierry Auguet