Abstract:
The invention relates to a method for acquiring cognition data (70) describing the cognition of the driver (14) of a vehicle (2), said method involving: acquiring vehicle descriptive data (60, 62, 64, 66) suitable for describing a state and/or a change in the state inside the vehicle (2); acquiring data (58) about events in the surroundings, said data (58) being suitable for describing an event unrelated to the vehicle (2); and determining the cognition data (70) on the basis of a comparison (68) between the vehicle descriptive data (60, 62, 64, 66) and the data (58) about events in the surroundings.
Abstract:
The invention relates to an electromechanically actuated drum brake, in particular an electromechanically actuated drum brake (1) for motor vehicles, comprising an electromechanical actuator (3) having an electric motor-transmission arrangement which is fastened to an outer face of an armature plate (2), containing, for the purpose of driving a converter which converts a rotational to a translational movement, an expansion device for converting a drive movement to a translational actuation movement (B) of brake shoes (6a,b) that are arranged in a brake drum on an inner face (5) of the armature plate (2) facing away from the actuator (3), such that said brake shoes are enabled to carry out an actuation movement in the direction of the brake drum. The aim of the invention is to improve known drum brakes by rendering them more compact and efficient, such as to obtain in a simple manner an electromechanical drum brake as part of a modular system using as many identical parts as possible and while replacing hydraulic wheel brake cylinders. For this purpose, the expansion device comprises a ball screw (10) without self-retention having a transmission efficiency of at least approximately 50%, said ball screw being arranged such that its axial direction is parallel to the actuator (3).
Abstract:
Rotor (2) for a permanent magnet electric machine (1), in particular a brushless DC machine, which rotor is arranged concentrically about a rotor axis (1') and has a passage opening (8) running along the rotor axis (1') for accommodating a shaft (22), comprising permanent magnets (3) and pole segments (4) extending along the rotor axis (1'), wherein the permanent magnets (3) and the pole segments (4) are arranged alternately around the rotor axis (1') in the circumferential direction, which rotor is further distinguished in that a cross-sectional area (14) of at least one, in particular each, pole segment (4) is formed, in at least one first pole segment region (5), asymmetrically with at least one shaped portion (6) arranged in a radially outer region, with respect to the rotor axis (1'), of the pole segment (4), wherein the shaped portion (6) extends substantially in a circumferential direction (1''). Furthermore, the invention describes the use of the rotor according to the invention.
Abstract:
The invention relates to an electric machine (2) comprising: a stator (50) having at least two stator pole-forming excitation coils (130, 136) and a rotor arranged therein (8) which is rigidly coupled to a rotatably mounted motor shaft (14); and at least one yoke element (56) which is arranged radially within the rotor (8). The aim of the invention is to provide an electric machine of the above type which has a low mass moment of inertia. For this purpose, the respective yoke element (56) is rotatably mounted about the motor shaft (14).
Abstract:
The invention relates to a method for relaying a data packet (43) containing at least positional data (16), said data packet being carried in a transmission signal (18) and received via a vehicular ad hoc network (1). The method comprises the following steps: filtering (47, 48) the received data packet (43) based on a predetermined filter condition (54); and relaying (42) the filtered data packet (50) to an additional receiver based on an identification (39) of whether the filtered data packet (50) should be relayed to the additional receiver.
Abstract:
The invention relates to a method or a device for determining a traffic lane state using a vehicle camera (6), said method having the following steps: - at least one image (I) is captured (S10) by means of the vehicle camera, - a first image section (R1) is ascertained (S16) which comprises an image of the traffic lane surface (1), - the first image section (R1) is fed (S18) to a classifier, said classifier assigning at least one class which represents a specified traffic lane state to the first image section, and - information on said at least one traffic lane state is output (S20).
Abstract:
The invention relates to a braking device (1), in particular for a motor vehicle brake system, wherein the braking device (1) has at least one movable activation element (2, 3, 4) and at least one device for monitoring the position and movement of at least one activation element (2, 3, 4), and at least one compressible, electrically conductive device spring (11) which is arranged in an elastically prestressed fashion between two abutments, wherein at least one of the abutments is of movable design, and the movement of the abutment is coupled at least partially to a movement of at least one activation element (2, 3, 4), and wherein the device spring (11) is provided for moving at least one of the abutments into its unactivated release position. In order to provide an improved braking device which permits, in a cost-effective way, precise, reliable, robust and durable determination of the position and movement of an activation element, as far as possible over its entire movement range, the invention proposes that the device spring (11) be additionally assigned a sensing function in that the device spring (11) is the component of the device for monitoring the position and movement of at least one activation element (2, 3, 4), wherein a degree of compression of the device spring (11) can be sensed, and wherein the device spring (11) is arranged in an electrically insulated fashion between the two abutments.
Abstract:
Method for limiting peak currents, particularly depending on a charge quantity provided by a voltage source, and the maximum pitch of the current flanks of an electric motor (11) for an electrohydraulic motor vehicle brake system, particularly a pump motor, controlled by means of pulse width modulation (PWM), wherein a change to an actual duty cycle (OUT3) of the PWM is made by a first duty cycle of the PWM on a second duty cycle at runtime, characterised in that the change takes place according to a positive or negative pitch value (SLP) calculated and/or changeable at runtime. The invention further describes an electronic circuit arrangement for the implementation of a method for limiting peak currents and the maximum pitch of current flanks.
Abstract:
The invention relates to a pneumatic brake booster (1), in particular for motor vehicle brake systems, comprising a booster housing (2), which is divided into at least one vacuum chamber (4) and at least one working chamber (5) by at least one wall (3), which can be exposed to a pneumatic pressure difference, is supported on a control housing (9) and can move in an actuating direction (13), a travel sensor assembly (6) for monitoring the position and movement of at least one movable wall (3), and a pressure sensor assembly (7) for monitoring a pressure level in at least one vacuum chamber (4), wherein the travel sensor assembly (6) and the pressure sensor assembly (7) provide electrical signals to an electronic control unit (8). In order to realize an in particular cost-optimized and assembly-optimized device, according to the invention the travel sensor assembly (6) and the pressure sensor assembly (7) are combined and arranged in a common module housing (10) attached to the brake booster (1).
Abstract:
Method and circuit arrangement in which the position of the rotor of an electronically commutated synchronous machine relative to one or more, in particular three, rotor position sensors which are fixed to the stator is determined, wherein, after a first rotor position determination process, the load-free rotor is rotated through a predefined angle by applying a suitable voltage vector, after which another rotor position determination process is carried out and the result of the second rotor position determination process is compared with an expected rotor position.