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Rotary encoder with built-in self-test

An encoder disc, absolute encoder technology, applied in the field of frequency analysis, can solve the problem of unintegrated speed sensor

Active Publication Date: 2011-04-06
FLOWSERVE MANAGEMENT CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the speed sensor is not integrated into the absolute encoder and does not generate speed data for frequency analysis

Method used

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  • Rotary encoder with built-in self-test
  • Rotary encoder with built-in self-test
  • Rotary encoder with built-in self-test

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Embodiment Construction

[0034] The invention may be used with any valve actuator or other rotating device, such as a device that rotates between two positions. Certain embodiments of the invention utilize rotary encoders with integrated speed sensors. A speed sensor is operable to generate speed data for frequency analysis. Another type of sensor capable of generating data that can be transformed into the frequency domain can also be used with the present invention. Whereas frequency analysis can be used to diagnose any problems with valve actuators or other rotating devices. In one embodiment, the rotary encoder is an absolute encoder with repeating sensor pairs.

[0035] In the drawings, like reference numerals denote like elements. figure 1 One embodiment of the rotary encoder of the present invention is shown. The rotary encoder 1 represents a specific embodiment of an absolute encoder. The terms "wheel" or "wheels" without modifiers such as "input", "timing" or "encoding" are applicable to ...

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Abstract

The invention relates to a rotary encoder which contains redundancy and fault-tolerant position detection and utilizes the built-in self-test capability. The rotary encoder is used in various rotary devices containing the valve actuator to generate speed data. The rotary encoder is used to diagnose the problems of the valve actuator and the applications of the other rotary devices; and paticularly the rotary encoder can execute frequency analysis to the data of speed, position, torque, thrust or vibration and the rotary encoder provides the speed or position data of the valve.

Description

[0001] This application is a PCT patent application submitted on April 21, 2006 that has entered the Chinese national phase (Chinese national application number is 200680055069.8, international application number is PCT / US2006 / 015174, and the title of the invention is "rotary coding with built-in self-test device") divisional application. technical field [0002] The present invention relates generally to the analysis of valve actuators and rotary position encoders, and more particularly to performing frequency analysis on valve actuators and rotary position encoders using built-in self-test. Background technique [0003] In many applications it is necessary to measure the position of the axis of rotation of a rotating device. However, rotating devices are often complex and have inaccessible parts. Furthermore, rotary devices are often integrated into a particular industrial process, where the cost of stopping the process to repair the rotary device often far exceeds the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/347F16K31/00
Inventor W·T·多伦蒂B·弗罗伊里D·J·莫里斯W·C·霍斯
Owner FLOWSERVE MANAGEMENT CO