Abstract: Method in which the current is measured inside an integrated PWM control circuit using at least one A/D converter which is likewise integrated in the circuit is described. The PWM controller is provided for the purpose of driving inductive loads and is arranged, in particular, in an electronic circuit of an electronic controller for a motor vehicle braking system. Before determining the actual current of the PWM controller, which is determined using the at least one A/D converter, the current is smoothed using a low-pass filter. A circuit arrangement for carrying out the above method and its use in electronic motor vehicle control systems is also described herein.

Abstract: The invention relates to an electronic motor vehicle control system having at least one valve actuating circuit which controls a load current by means of pulse width modulation. The actuating circuit has at least one electronic current measuring circuit which has at least one measurement path with at least one analog/digital converter. The analog/digital converts an analog measurement signal of the load current into a digital measurement signal of the load current and is actuated or designed in such a way as to carry out a plurality of current measurements per PWM period. The at least one measurement path of the current measurement circuit has a signal conservation circuit which provides the analog measurement signal of the load current substantially unchanged, and independent of the actual load current, for at least a defined hold time (toff->on, ton->off).

Abstract: A floor finish application apparatus and method for applying floor finishes to a floor. The floor finish application apparatus can include an applicator pad, which in some embodiments comprises filter material. In some embodiments, the filter material is air filter material, and has certain wet and/or dry friction characteristics, density, thickness, compressive resistance, liquid absorptive capacity, porosity, spreading capability, and/or leveling capability. In some embodiments, the pad has a stepped or otherwise uneven height.

Abstract: A method and device for determining the freezing temperature of an ice-water mixture on a road surface. Reference measurements of ice-to-water ratios in dependence on road temperatures for different salt contents of reference ice-water mixtures are provided to the device. The thickness of a water layer on the road surface is detected and the thickness of an ice layer of the road surface is detected by the device and method. From the detected thickness of the water layer and the detected thickness of the ice layer, an ice-to-water ratio of the ice-water mixture is determined. The temperature of the road surface is also detected. The freezing temperature of the ice-water mixture is determined by the device and method from the determined ice-to-water ratio and the detected temperature by means of the provided reference measurements.

Abstract: Various embodiments of a mop include a user-manipulatable control operable by a user to generate attachment of a mop pad to a mop head and/or release of the mop pad from the mop head. The user-manipulatable control can be located on a handle of the mop in some embodiments, and on the mop head in other embodiments. Also, an actuator coupled to the user-manipulatable control can be used to move one or more grips, magnet-carrying elements, slides, wings, or clamping members to releasably secure the mop pad to the mop head, or to selectively magnetize one or more magnets for release and/or attachment of the mop pad.

Abstract: A process for preparing ethylene homopolymers and copolymers in a tubular reactor having two or more polymerization zones at temperatures of between 150° C. and 350° C. and pressures in the range from 500 to 5000 bar, using oxygen as initiator, which comprises using, as molar mass regulator, one or more aliphatic ketones of the formula I, where the variable R1 is a C1-C6-alkyl or C3-C12-cycloalkyl, ethylene homopolymers and copolymers obtainable therefrom and their user for producing injection-molded products in the cosmetics, medical and food sectors are described.

Abstract: A floor finish application tool and method for applying floor finishes to a floor. Some embodiments are provided with disposable or quickly replaceable features, such as feed lines or reservoirs to eliminate the need for time consuming clean-up operations. Some embodiments are provided with a two portion hinged head having a spreading or distributing portion and a leveling portion to provide substantially uniform floor finish thickness across a floor. Some embodiments also feature an applicator pad composed of at least two different types of material. The first material is a floor finish distributing material that serves a function of substantially uniformly spreading bulk floor finish across a floor. The second material is a floor finish finishing material that is suitable for leveling the already spread floor finish.

Abstract: An electronic controller for motor vehicle control systems having at least one valve actuation circuit is described herein. The electronic controller uses pulse width modulation to control the load current (iL) flowing through an essentially inductive load (L), and has at least one electronic current measuring circuit which has at least one analog/digital converter which converts an analog measurement signal for the load current (iL) into a digital measurement signal for the load current (iL). The at least one analog/digital converter is a sigma-delta modulator. A method for measuring current using sigma-delta modulation and to the use of the electronic controller in a motor vehicle brake system is also described herein.

Abstract: A fluid delivery system for a cleaning tool. In one embodiment, the fluid delivery system includes a reservoir, a first conduit and a second conduit coupled to the reservoir and adapted to selectively dispense fluid from the reservoir, wherein an end of the second conduit is moveable relative to the first conduit to dispense fluid in a plurality of directions. In another embodiment, the fluid delivery system includes a reservoir adapted to contain at least one fluid, a first conduit coupled to the reservoir adapted to selectively dispense fluid from the reservoir, and a second conduit coupled to the reservoir adapted to selectively dispense fluid from the reservoir independent of the first conduit. In another embodiment, the fluid delivery system has a reservoir with a first and second outlet wherein the second outlet selectively dispenses fluid from the reservoir independent of the first outlet.

Abstract: Disclosed is a method for calibrating, mechanically adjusting, or calculating a drive current of an electromagnetically operable actuator. The actuator controls the flow of a fluid responsive to the differential pressure. The indicator of the influencing of the pressure caused by the actuator can be determined in advance by the intensity of the electric actuation of the actuator even without the use of pressure sensors, with one or more actuator-related characteristic curves, characteristic fields, or parameters KGind for the actuator being taken into account so that via these parameters a nominal flow G can be adjusted in a defined fashion in dependence on the current intensity I, and the actuator-related parameters are established automatically without using pressurizations of the actuator.

Abstract: In a method for producing and/or adjusting an electromagnetically controllable actuator which is appropriate to control the flow of a fluid, at least one electromagnetic property of the actuator is measured, and the measured electromagnetic property itself or a quantity derived therefrom is used as an actual value for a control of a correcting variable. This correcting variable is taken into account directly to produce or adjust the actuator. A suitable device for this calibration comprises a control circuit and a mounting location, where the actuator can be mounted into the device, and is designed to adjust at least one mechanical property of the actuator by way of the correcting variable.

Abstract: A method and device for determining the pressure of a fluid or the differential pressure prevailing at an actuator use an electromagnetically drivable actuator (4) for pressure measurement. For example, an electric control circuit is used to control the position of a valve actuating device or the force which acts on a valve actuating element.

Abstract: Disclosed are a method and circuit arrangement for determining the magnetic flux in at least one inductive component (1) which is electrically drivable by way of an electronic actuation or driver stage (3) by means of a drive signal (6), by evaluation and adjustment of a measuring signal induced by the magnetic flux of the inductive component using an electronic measuring device (4), and the magnetic-flux-responsive measuring signal (5) measured at the inductive component is actively maintained at a substantially constant value by means of the measuring device or the electronic actuation or the driver stage (3), and the time (t1, tc) is determined during which the drive signal is triggered, which acts on the inductive component with production of the measuring signal.

Abstract: The invention relates to a method for producing ethylene homopolymers and copolymers in a tubular reactor having at least two polymerisation zones, at temperatures of between 150° C. and 350° C. and pressures of between 500 and 5000 bar, using oxygen as an initiator. Said method is characterised in that at least one aliphatic ketone of general formula (I) is used as a molar mass regulator. The variable R1 in formula (I) represents a C1-C6 alkyl or a C3-C12-cycloalkyl. The invention also relates to ethylene homopolymers and copolymers that can be obtained using the inventive method and the use of the same for producing injection-moulded products in the fields of cosmetics, medicine and food.

Abstract: A control system is described for the electric fuel pump of an internal combustion engine, with a sensor for the speed of a shaft of the engine and with a logic circuit for providing a shut off signal for the pump, depending on the speed detected, where the signal of a further sensor (14) for the speed is supplied to the a logic circuit (16, 17), and where shut off then takes place only when both speed signals deviate from a specified range. In this way, it is ensured that the vehicle remains drivable if one of the two sensors (13) or (14) fails.

Abstract: An adjustable steering wheel apparatus with a hydraulic steering control unit (3) mounted on a bracket (9) or adjustment in the axial direction of the steering column (3) and also about the horizontal axis of aligned pins (14, 15). A locking means including links (21, 22), friction washers (27) and a clamping bolt (24) are provided to releasably secure the steering assembly (1, 2, 3, 4) in its adjusted position. A single manually operated lever (32) is operable to lock and release the locking means.