Measurement of motions of rotating shafts using non-vibrating contact potential difference sensor
First Claim
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1. An apparatus for monitoring motion of a rotating shaft comprising:
- at least one non-vibrating contact potential probe;
a source of data regarding the state of the shaft;
the data indicating whether the shaft is in a state selected from the group consisting of a normal state and an abnormal state;
a mechanism for measuring contact potential difference between the shaft and the at least non-vibrating contact potential probe; and
an output signal characteristic of the contact potential difference.
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Abstract
An apparatus having a non-vibrating contact potential probe. The non-vibrating contact potential probe is capable of measuring the chemical and geometrical irregularities on a rotating shaft. The chemical and geometrical information can be used to determine various properties of the rotating shaft.
70 Citations
20 Claims
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1. An apparatus for monitoring motion of a rotating shaft comprising:
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at least one non-vibrating contact potential probe;
a source of data regarding the state of the shaft;
the data indicating whether the shaft is in a state selected from the group consisting of a normal state and an abnormal state;
a mechanism for measuring contact potential difference between the shaft and the at least non-vibrating contact potential probe; and
an output signal characteristic of the contact potential difference. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of measuring rotation of a component comprising the steps of:
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providing a non-vibrating contact potential probe;
rotating the component with respect to the non-vibrating contact potential probe;
monitoring the relative motion between the non-vibrating capacitance probe and the component;
measuring the change in voltage and the change in current due to the relative motion; and
outputting a signal comprising voltage information and current information characteristic of an operating state of the component undergoing rotation. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A process for using surface variations on a shaft to determine at least one characteristic of the shaft, the process comprising the steps of:
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providing a non-vibrating contact potential probe;
rotating the shaft with respect to the non-vibrating contact potential probe;
outputting a signal caused by motion of the shaft relative to the non-vibrating contact potential probe; and
interpreting the signal to determine at least one characteristic of the shaft. - View Dependent Claims (18, 19, 20)
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Specification