Verfahrem zum Erkennen einer Bewegungsrichtung, insbesondere einer Drehrichtung

摘要

The invention concerns a method of determining direction of movement, in particular rotational movement of rotating parts such as a vehicle steering wheel. The object of the invention is to improve the accuracy of such a process using simple means. This is achieved by applying a method by which two directly measured signals and two other signals derived from the former of a first frequency are evaluated to derive at least two further signals (E, F; G, H) which are mutually phase shifted by 90 DEG and have a frequency which is double the first frequency. In a further embodiment of the invention, a further signal (K, L) with a frequency four times that of the initial two signals (A, B) is derived from the two derived signals (E, F; G, H).