A method for ascertaining movement variables of a two-wheeled vehicle. The two-wheeled vehicle includes a sensor system including rotational rate, acceleration, and wheel rotational speed sensors. The wheel rotational speed sensor detects at least one measurement pulse per rotation of a wheel of the two-wheeled vehicle. The method includes: acquisition of three-dimensional rotational rates of the two-wheeled vehicle by the rotational rate sensor, acquisition of acceleration values by the acceleration sensor, estimation of a state of movement of the two-wheeled vehicle based on the acquired rotational rates, the state of movement including estimated values for estimated acceleration values and for an estimated speed and for an estimated distance traveled, first correction of the estimated state of movement based on the acquired acceleration values, and ascertaining of an instantaneous speed of the two-wheeled vehicle and/or of a distance traveled by the two-wheeled vehicle, based on the corrected estimated state of movement.

A method for ascertaining movement variables of a two-wheeled vehicle. The two-wheeled vehicle includes a sensor system including rotational rate, acceleration, and wheel rotational speed sensors. The wheel rotational speed sensor detects at least one measurement pulse per rotation of a wheel of the two-wheeled vehicle. The method includes: acquisition of three-dimensional rotational rates of the two-wheeled vehicle by the rotational rate sensor, acquisition of acceleration values by the acceleration sensor, estimation of a state of movement of the two-wheeled vehicle based on the acquired rotational rates, the state of movement including estimated values for estimated acceleration values and for an estimated speed and for an estimated distance traveled, first correction of the estimated state of movement based on the acquired acceleration values, and ascertaining of an instantaneous speed of the two-wheeled vehicle and/or of a distance traveled by the two-wheeled vehicle, based on the corrected estimated state of movement.

A lighting system for a vehicle having a vehicle structure has a housing and a lens. A plurality of light sources are disposed within the housing. A sensor is disposed between the housing and the lens and senses a condition outside the lens.

An electric power assist device (50) includes a first to a third pedal force estimating computation unit (152, 154, 156) that estimate the pedal force of the bicycle according to variances between values of a first to a third state quantity detected by the first to third pedal force estimating computation units at two mutually different crank angle positions, a motor drive control unit (164) configured to control a drive of an electric motor according to a selected one of the pedal forces estimated by the first, the second and the third state quantity detecting units, and a failure diagnosis unit (158) configured to diagnose failures of the first, the second and the third state quantity detecting units by evaluating the variances in the values of first, the second and the third state quantities.

An electric power assist device (50) includes a first to a third pedal force estimating computation unit (152, 154, 156) that estimate the pedal force of the bicycle according to variances between values of a first to a third state quantity detected by the first to third pedal force estimating computation units at two mutually different crank angle positions, a motor drive control unit (164) configured to control a drive of an electric motor according to a selected one of the pedal forces estimated by the first, the second and the third state quantity detecting units, and a failure diagnosis unit (158) configured to diagnose failures of the first, the second and the third state quantity detecting units by evaluating the variances in the values of first, the second and the third state quantities.

An estimation device estimates a stroke quantity indicating a displacement in an up-and-down direction of a vehicle, in a multistage elastic member in which a plurality of members, each having a different load displacement characteristic indicating a relationship between a load and the displacement, are disposed. The estimation device comprises: a load calculation unit configured to calculate a variable ground contact load received by a wheel of the vehicle from a ground contact surface; a state quantity estimation unit configured to estimate the stroke quantity generated in the multistage elastic member; and a characteristic change unit configured to change a setting of the initial value to an estimated load displacement characteristic.

An estimation device estimates a stroke quantity indicating a displacement in an up-and-down direction of a vehicle, in a multistage elastic member in which a plurality of members, each having a different load displacement characteristic indicating a relationship between a load and the displacement, are disposed. The estimation device comprises: a load calculation unit configured to calculate a variable ground contact load received by a wheel of the vehicle from a ground contact surface; a state quantity estimation unit configured to estimate the stroke quantity generated in the multistage elastic member; and a characteristic change unit configured to change a setting of the initial value to an estimated load displacement characteristic.

A method for operating a driver assistance system for a two-wheeled vehicle, which is characterized in that in an intervention step, the driver assistance system intervenes as a function of a driver-specific driving-dynamics profile and an instantaneous driving state, the driving-dynamics profile reflecting a relationship between inclined-position values at which a driver of the two-wheeled vehicle drove in the past and acceleration values at which he drove at the same time, and the driving state being characterized by an instantaneously acquired acceleration value and an instantaneously acquired inclined-position value.

A method for operating a driver assistance system for a two-wheeled vehicle, which is characterized in that in an intervention step, the driver assistance system intervenes as a function of a driver-specific driving-dynamics profile and an instantaneous driving state, the driving-dynamics profile reflecting a relationship between inclined-position values at which a driver of the two-wheeled vehicle drove in the past and acceleration values at which he drove at the same time, and the driving state being characterized by an instantaneously acquired acceleration value and an instantaneously acquired inclined-position value.

A method (100) for estimating a volume of fuel available in a fuel tank (6) of a transport vehicle (1), the tank (6) comprising a tank wall inside which a space is defined for containing fuel, the method (100) comprising, in sequence, the steps of: a) exciting (101) a vibration of the tank (6); b) acquiring (102) a response signal correlated to a frequency response produced by the tank (6) due the excited vibration; c) processing (103) the acquired response signal to obtain an estimate of the initial volume of fuel available in the tank (6); d) gradually taking (104) fuel from the tank (6) with the transport vehicle (1) in use; e) estimating (105) a quantity of fuel taken gradually from the tank (6); f) estimating (106) the volume of fuel available in the tank (6) based on the initial volume and quantity estimate of fuel taken gradually.