Method for detecting disturbances when determining the rotational speed of a rotor and evaluation circuit
First Claim
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1. A method for detecting disturbances when determining a rotational speed of a rotor, the method comprising:
- providing a first rotational speed signal representative of a rotational speed of the rotor;
providing a first direction of rotation signal representative of a direction of rotation of the rotor; and
determining a phase difference between the first rotational speed signal and the first direction of rotation signal.
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Abstract
The invention relates to a rotary encoder and to a method for detecting disturbances in such a rotary encoder. In this case, vibrations or other disturbances are detected by means of the phase difference between a rotational speed signal, which represents a rotational speed of a rotor, and a direction of rotation signal, which represents a direction of rotation of the rotor.
64 Citations
11 Claims
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1. A method for detecting disturbances when determining a rotational speed of a rotor, the method comprising:
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providing a first rotational speed signal representative of a rotational speed of the rotor; providing a first direction of rotation signal representative of a direction of rotation of the rotor; and determining a phase difference between the first rotational speed signal and the first direction of rotation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for generating a signal containing information about a rotational speed or direction of a rotor, the method comprising:
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providing a first rotational speed signal representing the rotational speed of a rotor; providing a first direction of rotation signal representing the direction of rotation of the rotor; detecting disturbances by analyzing a phase difference between the first rotational speed signal and the first direction rotation signal; and in cases where no disturbance is detected, generating an output signal based on the first rotational speed signal or the first direction of rotation signal. - View Dependent Claims (11)
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Specification