Monitoring system for detecting axial and radial movement of a rotating body independent of rotational position
AssigneesCrane Co., Kingsbury, Inc.
InventorsRonald William Kipp, Steven Anthony Marinelli, Paul Eugene Vaughn, Wayne Alan Fearn
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Abstract
A system for sensing an axial and radial position of a body rotating about an axis independent of the rotational position of the body. The system includes at least one inductive sensor positioned in proximity to the body. A material forming part of the body effects a variation in the output of the inductive sensor as a function of axial and/or radial movement of the body relative to the axis. Output circuitry analyzes the output of the inductive sensor to produce a system output indicative of the axial and/or radial movement independent of the rotational position of the body.
Claims33
A system for sensing a position of a body rotating about an axis, said system comprising:
- at least one inductive sensor positioned in proximity to said body, each of said at least one inductive sensor providing an output;
- means forming part of said body for effecting a variation in the output of said at least one inductive sensor as a function of axial movement and radial movement of said body relative to said axis;
- and
- means for analyzing the output of said at least one inductive sensor to produce a system output which is indicative of said axial movement and said radial movement and is independent of a rotational position and frequency of said body about said axis.
A monitoring system for an electromechanical device including a stator and a rotor which rotates about an axis, comprising:
- at least one inductive sensor included as part of said stator and positioned in proximity to said rotor, each of said at least one inductive sensor providing an output;
- means forming part of said rotor for effecting a variation in the output of said at least one inductive sensor as a function of axial movement and radial movement of said rotor relative to said axis;
- and
- means for analyzing the output of said at least one sensor to produce a system output which is indicative of said axial movement and said radial movement and is independent of a rotational position and frequency of said rotor about said axis.
A system for sensing a position of a body rotating about an axis substantially in real-time, comprising:
- inductive sensor means positioned proximate to said body, an output of said inductive sensor means being influenced by a position of said body;
- and
- means for processing said output to provide substantially real-time axial and radial position information of said body independent of a rotational position and frequency of said body.
A system for sensing a position of a body rotating about an axis, comprising:
- a pair of inductive sensors positioned in proximity to said body, each of said inductive sensors providing an output;
- complementary inductive means forming part of said body for effecting substantially equal but opposite variations in said respective outputs as a function of axial movement of said body;
- means for processing said outputs to provide an indication of the axial movement of said body and to reduce common mode noise induced in the inductive sensors.
A system for sensing a position of a body rotating about an axis, the system comprising:
- at least one inductive component positioned in proximity to the body, the at least one inductive component having an input for receiving a driving signal to produce a magnetic field proximate the body and for providing an output indicative of the magnetic field;
- means forming part of the body for effecting a variation in the magnetic field produced by the inductive component as a function of axial movement and radial movement of the body relative to the axis;
- and
- means for analyzing the output of the at least one inductive component based on the variation to produce a system output indicative of the axial movement and radial movement and wherein the analyzing means is operable independent of a rotational frequency of the body.
Dependencies are inferred from the claim text.