POSITIONING MOTORS BY MEANS OF CAPACITIVE MEASURING

• Main Authors: EHRICH ENRICO, HOVAN JANI
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2020
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention relates to a measuring assembly (100) for determining the rotational position, rotational speed and/or direction of rotation of a shaft (10), in particular of an electric motor of a device of a vehicle that can be adjusted using an electric motor, and a corresponding method. The measuring assembly (100) comprises: at least one first electrode (20) and at least one second electrode (30), each forming capacitor elements, wherein an electrical voltage can be applied at the electrodes (20, 30) in such a way that the electrodes (20, 30) generate an electric field (EF); a rotatable shaft (10), in particular a motor shaft, having a measuring section (11) with an out-of-roundness, wherein the measuring section (11) is arranged relative to the electrodes (20, 30) in such a way that arotation of the shaft (10) brings about a change in the electric field (EF); and an evaluation unit (40) which is conductively connected to an electrode (20, 30), and which is designed to capacitivelydetect a change in the el