Measuring and testing – Dynamometers – Responsive to torque
Reexamination Certificate
2006-06-01
2008-05-13
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Dynamometers
Responsive to torque
C324S174000
Reexamination Certificate
active
07370540
ABSTRACT:
Rotation angle sensor, in particular for an electrical steering system of an industrial truck, in which two magnetic field sensitive sensor elements are arranged on orthogonal axes and a permanent magnet is attached to a shaft extending through the axis intersection point and the output signals X, Y of the sensor elements are given to an evaluation unit, which determines from the two output signals X, Y the rotation angle value by means of a function saved in the evaluation unit, characterized in that for a plurality of predetermined values of one of the output signals X or Y associated ideal values calculated from the geometrical relationship of the sensors of the other output signal Y, X are saved in the evaluation unit, the measured values of the other output signal Y, X are compared with the ideal values and a warning or stop signal is created if the difference between the measured and ideal value reaches a predetermined amount.
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Hammerl Robert
Manken Frank
Weber Christoph
Dunlap Jonathan
Jungheinrich Aktiengesellschaft
Lefkowitz Edward
Vidas Arrett & Steinkraus P.A.
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