MEASUREMENT SYSTEM FOR ROTATION ANGLE AND/OR ROTATION SPEED

摘要

Measurement system (10) for contactless determination of rotation angle and/or rotation speed, in which a disc (12) is secured to remain fixed during rotation on a shaft (11). During the measurement process, layers (13) of a good electrical conductor arranged on one or on both end faces of the disc (12) are moved in relation to the coils (16a and 16b). The measurement system (10) can be operated both by the eddy current measurement process and by the inductive process. To compensate for measurement errors the conducting layers (13) are arranged at approximately the same distance (a, b) between two coils (16). Furthermore, a particularly large number of measurement points can be used in order to obtain the mean value.