Computer-based concept, construction, and testing of a mechanical-fluidic rpm sensor

The paper describes a rpm-measuring device which uses a computer to interpret responses obtained by a feather element and a fluidic sensor. Characteristics of these two components are explained, and the experimental testing of the device is reported. A region of quasi-linearity is determined for the dependence of the mean gap change on the rpm number. The device principle is considered applicable to the development of other sensors used to measure mechanical parameters.