#$%^&*AU2008246288B220130919.pdf#####CORN HEAD CLUTCH MONITOR Abstract of the Disclosure A system for determining slippage of row unit or chopping unit slip clutches of a corn head includes a microcomputer coupled to at least one vibration sensor and a display or aural annunciator. A slipping clutch or group of clutches including a slipping clutch may be identified by recognizing a speed dependent predominant frequency. A slipping clutch or group of clutches including a slipping clutch may be identified by comparing magnitudes or times of receipt of vibrations from a pair of sensors. A slipping clutch or group of clutches including a slipping clutch may also be identified by comparing vibrations received from a single sensor with known location identifying magnitudes44 38*20 26 22 62 24 3o0 60 40 68 64 46-, ],48 58 0 66 36) 18 32 34 16- 1 10 FIG. 1
