Measurement method of shaft torque, speed and power parameters of power plant based on dual cameras

A power plant, dual camera technology, used in power plant shaft torque, power parameter measurement, speed field

Inactive Publication Date: 2017-11-28
MILITARY TRANSPORTATION UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the torque measurement of the short shaft, the existing method is mainly to measure the stress and strain on the shaft, such as sticking the resistance strain gauge on the shaft surface, using magnetostrictive materials, and detecting the corresponding physical quantity of the material by applying these strain-sensitive materials on the shaft surface Changes to reflect torque, but this type of method also requires an additional speed sensor

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  • Measurement method of shaft torque, speed and power parameters of power plant based on dual cameras
  • Measurement method of shaft torque, speed and power parameters of power plant based on dual cameras
  • Measurement method of shaft torque, speed and power parameters of power plant based on dual cameras

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Embodiment Construction

[0029] combine figure 1 , illustrate the implementation process of the present invention:

[0030] Based on the dual camera shaft torque, speed and power parameter measurement method of the power unit, the power unit 6, the transmission shaft 8, and the load 7 are connected in sequence;

[0031] On the outer peripheral surface of the transmission shaft, two circles of random identification patterns are arranged in parallel and at intervals, which are respectively the first random identification pattern and the second random identification pattern; the corresponding first camera 2 is arranged at the first random identification pattern, and the second random identification pattern The corresponding second camera 3 is arranged at the pattern; the first camera and the second camera are synchronously controlled by the synchronous controller; the first camera, the second camera, and the synchronous controller are connected to the host computer 1, and the first image storage unit is ...

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Abstract

The invention relates to a method for measuring shaft torque, rotational speed and power parameters of a power device. Under the premise of no load, two sets of image sequences S11‑S1n and S21‑S2n are collected synchronously; after loading, two sets of image sequences A11‑A1m and A21‑A2m are collected synchronously; among A11‑A1m and A21‑A2m Any pair of images A1i and A2i that have a synchronous corresponding relationship; A1i and S11‑S1n are correlated to obtain the reference image S1i with the highest correlation; A2i is correlated with S21‑S2n to obtain the most correlated reference image S2j; Find the reference image S2t corresponding to the time synchronization of S1i in S21‑S2n; the distance between S2t and S2j is the torsional displacement Δs at both ends of the shaft; the torque is obtained by . The invention has higher precision and simple structure.

Description

Technical field: [0001] The invention relates to a method for measuring physical parameters of a shaft in a power unit, and further relates to a method for measuring shaft torque, rotational speed and power parameters of a power unit. Background technique: [0002] In power machinery, shaft torque is one of the most typical mechanical quantities that reflect the dynamic performance of mechanical equipment. However, due to the hard texture of the shaft, the strain displacement of the shaft under the action of torque is very small, and the measurement of the torque of the shaft has always been a difficult research point. At present, torque measurement is mainly divided into two directions. One is to measure the torsion angle displacement at both ends of the shaft. This method can measure the speed signal at the same time, but because this method requires a large torsion angle at both ends of the shaft, it is generally suitable for long shafts. Torque measurement. For the tor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/38G01L3/00G01L3/24
Inventor 资新运耿帅王迎张英锋庞海龙赵姝帆
Owner MILITARY TRANSPORTATION UNIV PLA
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