Method and encoder
First Claim
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1. A method for determining at least one parameter related to a type of vibration for an encoder mounted on an axis and arranged to detect rotary movement of the axis, an element fixed at the encoder arranged to prevent the encoder from rotating with the axis, comprising:
- generating at least one signal in response to an acceleration in a direction in a point of the encoder;
determining at least one frequency spectrum related to the signal;
fitting at least one expression related to the signal based on the frequency spectrum, each expression describing an acceleration related to the direction and the point of the encoder; and
determining at least one parameter from the expression, each parameter related to a type of vibration for the encoder.
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Abstract
A method and an encoder are adapted to determine one or more parameters, each parameter being related to a type of vibration for the encoder. The encoder is mounted on an axis and arranged to detect rotary movement of the axis.
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Citations
10 Claims
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1. A method for determining at least one parameter related to a type of vibration for an encoder mounted on an axis and arranged to detect rotary movement of the axis, an element fixed at the encoder arranged to prevent the encoder from rotating with the axis, comprising:
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generating at least one signal in response to an acceleration in a direction in a point of the encoder; determining at least one frequency spectrum related to the signal; fitting at least one expression related to the signal based on the frequency spectrum, each expression describing an acceleration related to the direction and the point of the encoder; and determining at least one parameter from the expression, each parameter related to a type of vibration for the encoder. - View Dependent Claims (2, 3, 4, 5)
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6. An encoder for determining at least one parameter related to a type of vibration for an encoder mounted on an axis and configured to detect rotary movement of the axis, an element fixed at the encoder adapted to prevent the encoder from rotating with the axis, comprising:
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at least one accelerometer adapted to generate at least one signals, each signal being a response to an acceleration in a direction in a point of the encoder; a processing device adapted to determine at least one frequency spectrum related to the signal, the processing adapted to fit at least one expression related to the signal based on the frequency spectrum, each expression describing an acceleration related to the direction and the point of the encoder, the processing device adapted to determine at least one parameter from the expression, each parameter being related to a type of vibration for the encoder. - View Dependent Claims (7, 8, 9, 10)
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Specification