Abstract: A control system for a lift truck comprises: human-control devices generating manual-guidance signals for actuators of the vehicle, said devices including a hydraulic steering system, a control module (1) including an automatic-control submodule generating autonomous-guidance signals intended for one or more actuators of the vehicle, depending on setpoint signals, a switching module (2) designed to select one or more manual guidance signals and/or one or more autonomous-guidance signals, and an electrohydraulic valve enabling the conversion of a guidance signal stemming from the automatic-control module into a signal intended for the hydraulic steering system The system includes, in addition, a servo controller of the electrohydraulic valve, comprising a proportional-integral controller, an on/off controller and means for activation of one or other of the PI and ON/OFF controllers, depending on a speed threshold of the lift truck.

Abstract: A control system for a lift truck comprises: human-control devices generating manual-guidance signals for actuators of the vehicle, said devices including a hydraulic steering system, a control module (1) including an automatic-control submodule generating autonomous-guidance signals intended for one or more actuators of the vehicle, depending on setpoint signals, a switching module (2) designed to select one or more manual guidance signals and/or one or more autonomous-guidance signals, and an electrohydraulic valve enabling the conversion of a guidance signal stemming from the automatic-control module into a signal intended for the hydraulic steering system The system includes, in addition, a servo controller of the electrohydraulic valve, comprising a proportional-integral controller, an on/off controller and means for activation of one or other of the PI and ON/OFF controllers, depending on a speed threshold of the lift truck.

Abstract: A device is provided for regulating an assistance power of a bicycle fitted with an electrical power assistance machine. The device includes a rotation-sense detector, a speed sensor, and a central electronic controller. The detector is arranged to detect a sense of rotation of pedals of the bicycle. The speed sensor is arranged to measure a speed of a wheel of the bicycle. The central electronic controller is configured to calculate a total power of the bicycle from the measured speed, and to determine a power setpoint of an electric motor from the calculated total power, the sense of rotation of the pedals, and a power assistance factor selected by a cyclist of the bicycle. A method for regulating an assistance power of an electric power-assisted bicycle also is provided.

Abstract: A device is provided for regulating an assistance power of a bicycle fitted with an electrical power assistance machine. The device includes a rotation-sense detector, a speed sensor, and a central electronic controller. The detector is arranged to detect a sense of rotation of pedals of the bicycle. The speed sensor is arranged to measure a speed of a wheel of the bicycle. The central electronic controller is configured to calculate a total power of the bicycle from the measured speed, and to determine a power setpoint of an electric motor from the calculated total power, the sense of rotation of the pedals, and a power assistance factor selected by a cyclist of the bicycle. A method for regulating an assistance power of an electric power-assisted bicycle also is provided.

Abstract: A device for managing electric braking power includes a continuous bus, a dissipation branch, a current sensor, a controller, and an electronic charging switch. The bus includes a first pole for connection to a vehicle electric traction machine, a second pole for connection to a battery, and a connection point for connection to the dissipation branch, which includes an electronic dissipation switch connected to a dissipation resistor. The current sensor and the charging switch are positioned on the bus between the connection point and the second pole. The charging switch controls a flow of current over the bus from the first pole to the second pole. When power sent over the bus is greater than a total of power that charging of the battery can absorb and power that the dissipation resistor can dissipate, the controller causes the charging switch to open.

Abstract: An installation for an electric motor includes an electrical energy source with elements of different technologies and an inverter for controlling an AC electric motor. The inverter includes an AC current generator for delivering current to a terminal strip to be connected to phases of the electric motor, a supply line, current sensors on certain phases supplying the electric motor, a current sensor on the supply line, an input for receiving information that includes a limit current of the source and a requested-torque setpoint, and a controller for controlling phase currents of the electric motor as a function of the setpoint while maintaining a current of the supply line at an acceptable value as a function of the limit current of the source. The installation makes it possible to impose a maximum current on the current generator without risk of impairing the current generator.

Abstract: A device for managing electric braking power includes a continuous bus, a dissipation branch, a current sensor, a controller, and an electronic charging switch. The bus includes a first pole for connection to a vehicle electric traction machine, a second pole for connection to a battery, and a connection point for connection to the dissipation branch, which includes an electronic dissipation switch connected to a dissipation resistor. The current sensor and the charging switch are positioned on the bus between the connection point and the second pole. The charging switch controls a flow of current over the bus from the first pole to the second pole. When power sent over the bus is greater than a total of power that charging of the battery can absorb and power that the dissipation resistor can dissipate, the controller causes the charging switch to open.

Abstract: A device for managing electric braking power includes a controller and a DC bus with a first pole that connects to a vehicle traction machine, a second pole that connects to a battery, and a connection point. The machine is associated with an inverter that delivers an electric braking power via the DC bus. A dissipation branch is connected to the DC bus at the connection point. The device also includes, on the DC bus between the connection point and the second pole, a current sensor and a charging switch that controls a current that flows on the DC bus from the first pole to the second pole. The controller evaluates a difference between a battery recharge limit current and the current on the DC bus, such that the charging switch is left closed if the current is less than the limit current.