Abstract: A method and circuit arrangement for determining position of the rotor of an electronically commutated motor, wherein the rotor has magnetic axes having different permeances. Voltage is applied to stator phases, and resultant phase currents are monitored for purpose of determining rotor position in the standstill state of the motor. First and second rise times of phase currents are determined until predetermined limit values are reached in unsaturated state. The assignment of a magnetic axis to a stator phase is determined from first rise times of the currents in unsaturated state of the rotor core, and the polarization of the rotor is determined from second rise times of currents upon energization with saturation effects. After run-up of the motor, initial energization of the stator can be determined comparing levels of the magnet wheel voltages and corrected by changing the commutation of stator energization.

Abstract: Disclosed is a windshield wiper device (10), comprising a wiper bearing (16) which is essentially composed of a molded tube (18) that can be fastened to a motor vehicle by means of a fastening element (20). A wiper shaft (22) to which a wiper lever can be fastened is positioned in the molded tube (18). A predetermined breaking point (32) is provided on the fastening element (20) in such a way that the wiper bearing (16) is able to dip into the interior of the motor vehicle in case a defined and essentially axial force acts on the wiper shaft (22). The predetermined breaking point (32) is embodied as a hole in this case.

Abstract: A procedure is introduced to diagnose a catalytic converter system with at least two catalytic converters, through which separate exhaust gas flows flow, with the steps: test if oxygen storage capacities of the catalytic converters, which are at least two in number, exceed a predetermined threshold value. The procedure characterizes itself, in that the oxygen storage capacity of the first of two catalytic converters is compared with at least one first threshold value, in that an additional threshold value is ascertained as a function of a result of the comparison and in that the oxygen storage capacity of the second of two catalytic converters is compared with the additional threshold value. Additionally a control device is introduced, which executes the procedure.

Abstract: In a method for operating an internal combustion engine, a setpoint fuel quantity to be injected is subdivided into a first fuel quantity which is to be injected into an intake manifold of the internal combustion engine, and a second fuel quantity to be injected directly into a combustion chamber of the internal combustion engine. The subdivision of the fuel quantity is performed as a function of a temperature that is characteristic for the operation of the internal combustion engine, e.g., in a start of the internal combustion engine, and the ratio between the first fuel quantity and the second fuel quantity is continually modified as a function of the temperature.

Abstract: A method for monitoring a process execution of a plurality of sequentially executed processes starts one of a plurality of timers in cyclic permutation when one of the processes is started, and outputs a first error signal when a period of time recorded by one of the timers exceeds a predefined maximum period of time.

Abstract: The invention relates to a robotic vehicle (1), in particular a robotic vehicle (1) designed for self-contained operations, with drive means (5) for the movement of the vehicle (1) on the subsurface (11), and with control means (7) for the activation of the drive means (5) in accordance with the measured intensity of the infrared radiation. According to the invention, a light sensor (9) is provided to detect the intensity of light radiation from the visible spectrum reflected from the subsurface (11), and in addition the control means (7) are designed to activate the drive means (5) in accordance with the measured intensity of the light radiation. The invention further relates to a method of activation.

Abstract: A microstripline transmission line arrangement carries a signal having a fundamental frequency. The arrangement includes a first microstripline transmission line, a second microstripline transmission line, and a coaxial electrically conductive conduit interconnecting the first transmission line and the second transmission line. The conduit includes a signal conductor and an electrically grounded shield substantially surrounding the signal conductor. The conductor and the shield are positioned relative to each other to thereby comprise a means for lowpass filtering the signal. A cutoff frequency of the lowpass filtering is less than a third harmonic of the fundamental frequency.

Abstract: The invention relates to a method for monitoring and controlling the regeneration of a particle filter in an exhaust gas duct of an internal combustion engine, wherein said regeneration of the particle filter takes place by means of an oxidative burning off of particles during a regeneration phase. Provision is made according to the invention for the internal combustion engine to be operated at a lean operating point at least intermittently during lean operating phases or during a mixture oscillation and for the regeneration of the particle filter to be monitored during the lean operating phases or during the mixture oscillation via the temporal course of a second signal of a second lambda probe disposed in the exhaust gas direction downstream of said particle filter or of a second parameter derived therefrom in comparison to the temporal course of a first signal of a first lambda probe disposed in the exhaust gas direction upstream of said particle filter or of a first parameter derived therefrom.

Abstract: A power miter saw comprising a base having a center portion configured to support a rotatable table and side portions on opposite sides of the center portion, the side portions having a flat working surface for supporting a work piece, a table rotatably connected to the saw base and having a zero miter angle position, a saw blade and motor assembly operatively connected to the table, the fence positioning surfaces being configured to accurately position a fence assembly relative to the table, a fence assembly extending between the base side portions having a front vertical contacting surface and an opposite rear surface, each of the base side portions having a generally vertical fence positioning surface extending downwardly substantially perpendicularly from the flat working surfaces, and a securing mechanism for applying a substantially horizontal holding force for holding the fence assembly securely to the vertical fence positioning surfaces.

Abstract: A method for verifying the certification of a recording apparatus (14) associated to a control device (12), wherein the control device (12) validates a first certificate written on the recording apparatus (14). Furthermore, a method for identification of a recording apparatus (14), a method for handling a recording apparatus (14), and a recording apparatus for use in connection with a control device (12) are disclosed.

Abstract: A system for classifying an occupant using a reduced quantity of force sensors. The system includes one or more force sensors, an electronic control unit (“ECU”), and a vehicle safety system. The force sensors are, for example, i-Bolt™ sensors, or other suitable force sensors or force sensing systems. The ECU includes, among other things, an occupant classification module and a safety monitoring module. The occupant classification module receives signals from the force sensors, determines one or more moments about a fixed point of a vehicle occupant control volume, and determines an occupant classification metric based on a mass of the control volume and a center of gravity of the control volume. The occupant classification module uses the occupant classification metric to classify an occupant into one of a plurality of occupant classifications. Based on the occupant classification, the safety monitoring module controls one or more vehicle safety systems.

Abstract: The invention relates to a fan, particularly for cooling an internal combustion engine of a vehicle, having an attachment unit, an electric drive motor, and a fan wheel rotating about the fan axis, wherein the attachment unit has a frame, from which bars protrude that cross through an air opening, said bars carrying an attachment element serving to attach the drive motor. The invention proposes that each of the bars (6) have a cross-sectional contour, wherein at least one cross bar (18) extending laterally in the direction of the fan axis (9) is configured between end regions (14, 15) of the bar (6) extending in the direction of the fan axis (9), defining a bar width (b).

Abstract: A rotary power tool operable in a first speed mode and a second speed mode comprising a motor shaft (6), a driveshaft (10) with an axis of rotation (42), a gear (24, 74) that is a component of a transmission (8) for transmitting torque from the motor shaft (6) to the driveshaft (10), a support member (48, 70), at least one bearing member (54, 76) which contacts the gear (24, 74), wherein the gear (24, 74), the support member (48, 70) and the at least one bearing member (54, 76) form an assembly that is in a first position along the axis of rotation (42) when the tool is operating in the first speed mode and is in a second position along the axis of rotation (42) when the tool is operating in the second speed mode, and wherein the at least one bearing member (54, 76) protrudes from the support member (48, 70) in the direction of the gear (24, 74) and rotates when the gear (24, 74) rotates.

Abstract: A communication system is described that includes a data bus and multiple user nodes connected to the data bus. Also described is a method for operating such a communication system. Data frames for data transmission each include a data field and/or a control field and a check sum field. One user has a high-precision clock generator (for example, precise quartz, MEMS resonator, etc.), and the remaining users have a clock generator (for example, an RC oscillator or imprecise quartz) having a lower precision. During operation of the communication system calibration messages are present on the data bus, and the users having the imprecise clock generator receive a calibration message. The users having the imprecise clock generator calibrate the imprecise clock generator to a system clock signal of the data bus, taking into account information contained in the received calibration message.

Abstract: The invention relates to a method for preparing models of technical devices, wherein each technical device comprises units that are connected to each other by means of connection points, wherein, when performing the method, at least one structure made of units connected to each other by means of connection points comprising similarities for all technical devices is integrated and automatically described as at least one mutual module (8) for all models.

Abstract: A motion sensor includes a substrate at least having one micromechanical acceleration sensor and a magnetoresistive circuit. The micromechanical acceleration sensor and the magnetoresistive circuit are constructed on the same substrate.

Abstract: A method and a device for operating an internal combustion engine make it possible to shift the combustion limit. In this context, a predefined output variable of the internal combustion engine such as the torque, for example, is realized in at least one operating state of the internal combustion engine by at least a retardation of an ignition angle. It is checked whether, due to the retardation of the ignition angle, a variable like, for example, a misfiring, characteristic for the combustibility of the air/fuel mixture in a combustion chamber of the internal combustion engine, exceeds a predefined limiting value in terms of a deterioration of the combustibility, and in this case, at least one actuator of the internal combustion engine, different from an actuator for setting the ignition angle, such as the exhaust-gas recirculation valve or EGR valve, for instance, is controlled along the lines of improving the combustibility of the air/fuel mixture.

Abstract: A battery pack for locking with a power tool with at least one movable locking bar has at least a front recess and a rear recess located after the front recess in the direction of a relative motion between the battery pack and the power tool, the recesses are configured as detent grooves, and the recesses are differently shaped and are offset transversely to the direction of motion; and a power tool locks with the battery pack.

Abstract: In a contact housing having a contact chamber for accommodating a contact body which can be inserted into the contact chamber through an assembly opening in a direction of insertion, in an operational position of the contact body in which it is stopped within the contact chamber, at least one element of contact chamber is lying against a stopping surface (support surface), of contact body, which generally points in a direction opposite to the insertion direction in such a way that the removal of the contact body is generally prevented counter to the insertion direction, the present invention provides that a center axis of the assembly opening has a lateral offset transversely to the direction of insertion with respect to a center axis of the stopped contact body; that in the contact chamber, in the direction of insertion, behind the assembly opening, a displaceably situated, elastically flexible spring is provided that extends into the path of the contact body, which narrows the path for the contact body and

Abstract: A drum braking system includes, a brake lever assembly having a brake lever and a cable assembly. The brake lever includes a base member, a guide spring support attached to the base member, and a connector structure attached to the base member. The cable assembly includes a guide spring supported by the guide spring support, and a cable extending through the guide spring. The guide spring support defines an aperture having a perimeter. The guide spring support includes a first tab, a second tab, and a third tab each extending from the perimeter. The guide spring extends through the aperture so as to be positioned in contact with each of the first tab, the second tab, and the third tab. The connector structure has defined therein a slot having a reduced width portion and an increased width portion. The cable further extends though the reduced width portion of the slot.