Abstract:
Die Erfindung betrifft ein Verfahren zum Betreiben einer Schließvorrichtung (1) in einem Kraftfahrzeug und zum Detektieren eines Einklemmfalls, bei dem während eines Schließvorgangs ein Objekt zwischen einem sich bewegenden Schließelement (2) der Schließvorrichtung (1) und einer Anschlagskante (3) der Schließvorrichtung (1) eingeklemmt wird, mit folgenden Schritten: Ermitteln (S2) einer Angabe über die momentane Schließkraft während eines Schließvorgangs; Ermitteln (S4) einer Beschleunigungskraftangabe, die eine Beschleunigungskraft angibt, die während eines Schließvorgangs auf das Schließelement (2) der Schließvorrichtung (1) einwirkt; Bereitstellen (S5) eines Schließkraft-Schwellenwertes abhängig von der Beschleunigungskraftangabe; Detektieren (S6) eines Einklemmfalls, wenn die ermittelte Angabe über die momentane Schließkraft den Schließkraft-Schwellenwert übersteigt.
Abstract:
A surge protection circuit to reduce capacitance inherent of standard diode packaging and to improve voltage clamping reaction speeds under high surge conditions. The surge protection circuit has a coil having a first end and a second end and a diode cell having a top layer, a center diode junction, and a bottom layer. The top layer is directly connected to the second end of the coil and the bottom layer is directly connected to a ground. The diode cell has no wire leads.
Abstract:
Die Erfindung betrifft ein Verfahren zum Korrigieren eines durch Sättigung gestörten Sekundärstromverlaufes (i 2 (t)) eines Stromwandlers (10), bei dem Messwerte (i (n) ) des Sekundärstromverlaufes (i 2 (t)) des Stromwandlers (10) erfasst werden. Die erfassten Messwerte (i (n) ) werden auf Vorliegen einer Störung durch Sättigung überprüft und bei Vorliegen einer Störung durch Sättigung wird ein Startzeitpunkt (t start ) bestimmt, der den Beginn der Sättigung angibt. Die nach dem Startzeitpunkt (t start ) erfassten Messwerte werden unter Kompensation der Störung korrigiert. Um ein solches Verfahren derart auszubilden, dass es mit vergleichsweise geringem Rechenaufwand und ohne die Notwendigkeit für den entsprechenden Stromwandler charakteristischer Kennlinien durchgeführt werden kann, wird vorgeschlagen, dass anhand von Messwerten, die vor dem Startzeitpunkt (t start ) erfasst worden sind, charakteristische Parameter des Sekundärstromverlaufes (i 2 (t)) bei fehlender Sättigung bestimmt werden und unter Verwendung der bestimmten charakteristischen Parameter ein korrekter Verlauf der nach dem Startzeitpunkt (t start ) aufgenommenen Messwerte berechnet wird. Die Erfindung betrifft auch ein entsprechend eingerichtetes elektrisches Feldgerät.
Abstract:
Static neutralization of a charged object is provided by applying an alternating voltage having a complex waveform, hereinafter referred to as a "multi-frequency voltage", to an ionizing electrode in an ionizing cell. When the multi-frequency voltage, measured between the ionizing electrode and a reference electrode available from the ionizing cell, equals or exceeds the corona onset voltage threshold of the ionizing cell, the multi-frequency voltage generates a mix of positively and negatively charged ions, sometimes collectively referred to as a "bipolar ion cloud". The bipolar ion cloud oscillates between the ionizing electrode and the reference electrode. The multi-frequency voltage also redistributes these ions into separate regions according to their negative or positive ion potential when the multi-frequency voltage creates a polarizing electrical field of sufficient strength. The redistribution of these ions increases the effective range in which available ions may be displaced or directed towards a charged object.
Abstract:
A Protection system in which a shunt protection device (210) at the interface terminals (Tip, Ring) is optically triggere sensor components (230A, 230B) within the circuit. This permits a variety of appropriate overvoltage detection thresholds to be defined at different nodes within the circuit. Preferably the shunt protection device is combined with one or more series protecti devices (LFR) which interrupt overcurrent.
Abstract:
Static neutralization of a charged object is provided by generating, in an ionizing cell or module, an ion cloud having a mix of positively and negatively charged ions, and reshaping the ion cloud by redistributing the ions into two regions of opposite polarity by using a second voltage. The second voltage creates an electrical field, which is preferably located in the vicinity of the ion cloud. The redistribution of the ions increases the effective range in which available ions may be displaced or directed towards the charged object. The electrical field redistributes ions that form the ion cloud. Ion redistribution within the ion cloud occurs because ions having a polarity corresponding to the polarity of the second voltage are repelled from the electrical field, and ions having a polarity opposite from that of the electrical field are attracted to electrical field. Redistribution of the ions into two regions of opposite polarity in the ion cloud in turn reshapes the ion cloud so that a portion of the cloud corresponding to the repelled ions is displaced by ions attracted to the electrical field, thus enhancing the range in which the ions may be dispersed or directed. This manner of redistributing ions into two regions is sometimes referred to as "ion polarization" in the disclosure herein.
Abstract:
A powered panel control apparatus and method is used with an electric motor having a rotatable armature. The control detects and generates time periods between the rotation of the armature over a predetermined constant amount of angular rotation. An average time period is computed over a predetermined number of time periods and compared with a threshold time period to determine if an obstacle is present in the path of movement of the panel. Transient counts are accumulated for increasing average time periods over a number of time period samples to detect an obstacle. Endzone ramp compensation adjusts a threshold for the initial entry of the panel into a seal.
Abstract:
A method for closing a motor-driven window is disclosed, including the steps of raising the window after the window has been stopped evaluating the torque after initially raising the window 208 and stopping the window if the pinch force exceeds 212 a predetermined limit 214. Torque is preferably estimated according to the present invention using the sum of dynamic torque 204, electromagnetic torque 202, and core loss compensation 206. Further, consistent values of torque are estimated during window starts and stops. Consistent values of torque are estimated during window starts and stops, which is beneficial in providing accurate pinch force measurements 210 and avoiding false pinch indications.
Abstract:
The invention relates to a method for controlling and adjusting a motor-driven adjusting device, especially a window lifter, a seat adjusting device or a sliding roof of a motor vehicle, comprising an anti-jamming protection. The motor drive is switched off or blocked at a value below a predetermined load limit when said predetermined load limit is exceeded. The aim of the invention is to provide a method with which the adjusting device is subjected to as little loads as possible under all operating conditions. To this end, state variables of the motor drive are continuously detected and the load actually generated by the motor drive is determined from said state variables on the basis of a mathematical model of the drive.
Abstract:
Current transformer (CT) secondary currents for the windings of a power transformer are used to produce a differential current. An operating current value is obtained from the differential current value. A restraining current value is obtained from processed winding current values. Second and fourth harmonic values of the differential current are obtained and are summed with a restraining current quantity which is a result of the restraining current multiplied by a slope characteristic factor. If the operating current value is greater than the sum of the restraining current quantity and the second and fourth harmonic values, an output signal is produced which may be used as a trip signal unless it is blocked by selected blocking signals generated by another portion of the system.