Patent ID: 8225650

Claim:
A method for measuring the torque uniformity of shiftable friction clutch systems, with the individual friction clutch system having a drive-input-side adapter and at least one drive-output-side adapter comprising: inserting into a measuring device a friction clutch system; with the measuring device holding the drive-input-side adaptor by means of a first holding device; engaging around a drive-output-side adapter by means of a further holding device; in that one of the holding devices is connected to a drive motor; in that the measuring device comprises at least one torque measuring device; in that the clutch plates which transmit the drive force in a frictionally engaging manner, are pressed against one another by means of a preload device which generates a test force; in that the drive motor is driven at a test rotational speed; and in that, within a time interval, the torque of the drive motor which is transmitted by means of the friction clutch system is measured by means of the torque measuring device and wherein a repetition frequency of the torque fluctuations over the time interval is determined as a function of the rotational speed of the drive motor and wherein the determination of the repetition frequency takes place in a computer-aided manner by means of a Fourier analysis.