Method for testing photoelectric reflection type dynamic torque of equal-diameter rotary shaft

A technology of dynamic torque and photoelectric reflection, applied in the direction of torque measurement, measurement device, power measurement, etc., can solve the problems of complex structure of measurement device, limited test range, complex calculation model, etc., to improve operability and easy calculation , the effect of improving reliability

Inactive Publication Date: 2014-08-13
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a photoelectric reflective dynamic torque test method for equal-diameter rotating shafts in order to solve the problems of complex calculation models, complex structures of measuring devices, limited testing range and high cost in existing dynamic torque testing methods for equal-diameter rotating shafts

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  • Method for testing photoelectric reflection type dynamic torque of equal-diameter rotary shaft
  • Method for testing photoelectric reflection type dynamic torque of equal-diameter rotary shaft
  • Method for testing photoelectric reflection type dynamic torque of equal-diameter rotary shaft

Examples

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Effect test

Embodiment 1

[0024] The photoelectric reflective dynamic torque test method of the equal-diameter rotating shaft (only the first-order torsional vibration of the tested rotating shaft is tested), including the following steps:

[0025] (1), build as image 3 The transmission system shown: select the measured rotating shaft 5 with a diameter of 0.1 m and a length of 5 m, the left end of the measured rotating shaft 5 is fixed with a steel rolling roll 14 with a diameter of 0.4 m and a length of 1 m, and the right end of the measured rotating shaft 5 is connected with the diameter 0.4m, a length of 1m motor rotor 15 is fixed. One side of the tested rotating shaft 5 is installed with a gap between the tested rotating shaft 5 and the light emitted by the light source is located on the first reflective photoelectric sensor 3 on the vibration node section of the tested rotating shaft 5 and between the tested rotating shaft 5 The gap between them is equal to the gap between the first reflective p...

Embodiment 2

[0032]The photoelectric reflective dynamic torque test method of the equal-diameter rotating shaft (only the first 2 orders of dynamic torque of the tested rotating shaft is tested), including the following steps:

[0033] (1) Construct the transmission system as in Example 1.

[0034] (2) When the tested rotating shaft 5 is running with a load, it will generate static torque under the action of the load torque; when the tested rotating shaft 5 is excited by broadband excitation from the power source or load torque, it will produce n-order sinusoidal changes Torsional vibrations create dynamic torque. Under the action of static and dynamic torque, a dynamic relative rotation angle θ will be generated between the vibration node section of the measured rotating shaft 5 and the detection section, so that the dynamic signal intelligent test analysis system 2 detects the first reflective photoelectric sensor 3 and the second The time difference τ generated between the photoelectri...

Embodiment 3

[0042] The photoelectric reflective dynamic torque test method of the equal-diameter rotating shaft (only the first three orders of dynamic torque of the tested rotating shaft is tested), including the following steps:

[0043] (1) Construct the transmission system as in Example 1.

[0044] (2) When the tested rotating shaft 5 is running with a load, it will generate static torque under the action of the load torque; when the tested rotating shaft 5 is excited by broadband excitation from the power source or load torque, it will produce n-order sinusoidal changes Torsional vibrations create dynamic torque. Under the action of static and dynamic torque, a dynamic relative rotation angle θ will be generated between the vibration node section of the measured rotating shaft 5 and the detection section, so that the dynamic signal intelligent test analysis system 2 detects the first reflective photoelectric sensor 3 and the second The time difference τ generated between the photoel...

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Abstract

The invention relates to the field of test of a dynamic torque of a rotary shaft, in particular to a method for testing a photoelectric reflection type dynamic torque of an equal-diameter rotary shaft in a non-contact way. The method solves problems of complicated calculation model, complicated measurement device structure and high cost in the existing method for testing the dynamic torque of the equal-diameter rotary shaft. The method for testing the photoelectric reflection type dynamic torque of the equal-diameter rotary shaft comprises the following steps: detecting a time difference tau of two photoelectric pulse signals obtained by reflection of a first reflection type photoelectric sensor and a second reflection type photoelectric sensor from the same detection scale line by a dynamic signal intelligent test analysis system when the tested rotary shaft rotates under an action of the dynamic torque, continuously detecting and enabling time differences obtained at different moments to form a time sequence tau(t); and introducing the time sequence tau(t) into a formula tau(t) / T=theta(t) / 360 DEG and M(t)=(piGd4 / 32L)*theta(t) so as to calculate the dynamic torque M(t). The method for testing the photoelectric reflection type dynamic torque of the equal-diameter rotary shaft is higher in precision and is widely suitable for testing the dynamic torque of the equal-diameter rotary shaft on transmission equipment.

Description

technical field [0001] The invention relates to a dynamic torque testing method of a rotating shaft, in particular to a photoelectric reflection dynamic torque testing method of an equal-diameter rotating shaft. Background technique [0002] At present, the dynamic torque test methods for measuring equal-diameter rotating shafts of transmission equipment mainly include the following types: (1), the resistance strain type torque test method, which is to paste the strain gauge on the measured rotating shaft and connect the strain gauge to the measurement conversion circuit Thus, a strain-type torque test system is formed. The disadvantage of this test method is contact test, which requires wireless data transmission. This method has poor temperature stability, large sensitivity dispersion, large nonlinear error under large strain, poor reliability and Low measurement accuracy and other problems, and the strain gauge test system is easy to be thrown from the tested rotating sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/00
Inventor 马维金李凤兰王俊元杜文华高琼黄彬城
Owner ZHONGBEI UNIV
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