System and method for measuring shaft system misalignment based on eddy current sensor
An eddy current sensor, measuring shaft technology, applied in the direction of measuring devices, instruments, electrical devices, etc., can solve problems such as difficult quantitative measurement, and achieve the effects of simple structure, cost reduction, and simple operation
Inactive Publication Date: 2011-09-07
XI AN JIAOTONG UNIV
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Problems solved by technology
This invention uses eddy current sensor technology for the measurement of shafting misalignment, which solves the problem of difficult quantitative measurement of misalignment in misalignment fault diagnosis
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[0035] The present invention is described in further detail below in conjunction with accompanying drawing:
[0036] see figure 1 , figure 1 It is a schematic diagram of a test system for measuring shafting misalignment based on an eddy current sensor in the present invention. The measurement system includes sensor probe 1; drive shaft 2; driven shaft 3; sensor magnetic support 4; sensor output line 5; motor 6; code disc 7; digital oscilloscope 8 and other eight parts. The system is provided with a motor 6 and a driven shaft frame corresponding to the motor 6, the drive shaft 2 of the motor 6 corresponds to the driven shaft 3 set on the driven shaft frame; a disc is arranged at the end of the driven shaft 3 , the disc is adsorbed with a sensor magnetic support 4; the sensor 1 probe on the sensor magnetic support 4 is close to the drive shaft 2 port, and the drive shaft 2 is provided with a code disc 7; the sensor 1 communicates with the sensor output line 5 The system digit...
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The invention discloses a system and a method for measuring shaft system misalignment based on an eddy current sensor. The system comprises a motor, and a driven shaft frame corresponding to the motor; a motor driving shaft is corresponding to a driven shaft of the driven shaft frame; an end head of the driven shaft is provided with a circular disc adsorbed with a sensor magnetic base; a sensor probe is close to a port of the driving shaft; a digital oscilloscope transmits the actual measuring value for testing the shaft system misalignment to a system computer; and the actual measuring value is in fitting with the simulation data by data processing so as to obtain the error value of the shaft system misalignment. The method comprises the following steps of: rotating the driven shaft for one circle, storing the collected actual measuring value of the sensor, processing the data, and obtaining the misalignment quantity of the driven shaft relative to the driving shaft by calculating the fitting ellipse correlation parameter. The method is capable of accurately calculating three types of misalignment quantities; the measuring system is simple in structure, and convenient in installation. The method for quantitatively measuring the misalignment quantity provides the evidence for the diagnosis and elimination for misalignment failure, and has wide application foreground in the field for measuring the shaft system misalignment.
Description
technical field [0001] The invention belongs to the field of misalignment fault diagnosis, and relates to an application based on sensor technology in the field of misalignment fault diagnosis—a system and method for measuring shafting misalignment based on an eddy current sensor. Background technique [0002] With the rapid development of modern industry, various rotating machines are widely used in various industrial fields. The fault of rotating machinery is an important issue related to the production safety of the national economy, and 60% of the faults of rotating machinery are related to the misalignment of the rotor system. As the main component of rotating machinery, the rotor can be operated safely and efficiently for a long time has become an important guarantee for the normal production of the entire enterprise, and enterprises are paying more and more attention to it. The movement of the rotor in the misaligned state can cause mechanical vibration, wear of the ...
Claims
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Inventor 张西宁温广瑞吴茜王树典
Owner XI AN JIAOTONG UNIV