Torsional oscillation test error correction method

An error correction and error technology, applied in the field of torsional vibration test error correction, can solve problems such as instantaneous speed acquisition error and torsional vibration value error

Inactive Publication Date: 2016-12-07
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology

However, in the process of obtaining the instantaneous speed, it is necessary to artificially install components such as code discs, toothed discs, and reflective paper on the rotating shaft. The position error during the installation of these components will have a great impact on the process of obtai

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  • Torsional oscillation test error correction method

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] The embodiment of the present application provides a torsional vibration test error correction method, which is suitable for correcting the torsional vibration test error caused by the eccentricity of the code disc, such as figure 1 As shown, the torsional vibration test error correction method includes:

[0046] S101: installing a preset number of sensors on a preset line segment on the surface of the code wheel, the preset line segment being a radius ...

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Abstract

The application discloses a torsional oscillation test error correction method which is suitable for correcting torsional oscillation test errors generated by code disc eccentricity. The torsional oscillation test error correction method comprises steps of installing a preset number of sensors on a preset line segment on the surface of a code disc, wherein the preset line segment is a radius extending line of a rotary shaft; numbering the preset number of sensors according to distances to the center of the rotary shaft from small to large, and recording positional parameters of the sensors except a No.1 sensor; collecting a rotating speed pulse signal of each sensor when the rotary shaft has a stable rotating speed; carrying out order analysis of the collected rotating speed pulse signals to obtain a torsional parameter of each order of each sensor; and placing the torsional parameter of each order of each sensor and the positional parameter of each sensor in a preset formula to obtain a torsional value of each order after correction. As a result, the object of correcting the torsional oscillation test errors generated by code disc eccentricity is achieved.

Description

technical field [0001] The technical field of rotating machinery and signal processing of the present application, more specifically, relates to a method for correcting torsional vibration test errors. Background technique [0002] Torsional vibration is a parameter that reflects the risk of resonance (resonance) in the system. It is mainly related to the moment of inertia and torsional stiffness of each component of the system, that is, to the structural size of the equipment. Torsional vibration widely exists in rotating machinery. Since torsional vibration is highly concealed and harmful, accurate measurement of torsional vibration is particularly important. [0003] At present, the measurement of torsional vibration mainly adopts non-contact measurement, that is, the torsional vibration signal of the system is obtained indirectly by measuring the fluctuation of instantaneous speed (speed pulse signal). The instantaneous speed is an important intermediate quantity in the ...

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Application Information

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IPC IPC(8): G01M7/02
CPCG01M7/02
Inventor 刘石杨志坚高庆水罗敏强张楚杨毅
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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