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Helicopter rotor blade movement parameter measurement method based on vibration correction

A technology of helicopter rotor and motion parameters, applied in the field of visual measurement, can solve problems such as inaccurate measurement, and achieve the effect of good safety, accurate measurement and simple operation

Active Publication Date: 2018-11-20
AERODYNAMICS NAT KEY LAB +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for measuring the motion parameters of helicopter rotor blades based on vibration correction, which aims to overcome the deficiencies of the prior art, and can effectively solve the problem of inaccurate measurement caused by ignoring the influence of vibration in the existing measurement methods

Method used

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  • Helicopter rotor blade movement parameter measurement method based on vibration correction
  • Helicopter rotor blade movement parameter measurement method based on vibration correction
  • Helicopter rotor blade movement parameter measurement method based on vibration correction

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Embodiment Construction

[0038] 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 of the embodiments of the present invention, not all of them. 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.

[0039] Such as figure 1 As shown, this embodiment provides a method for measuring motion parameters of helicopter rotor blades based on vibration correction.

[0040] Step 1: If figure 2 As shown, a certain number of coding marking points are arranged on the rotor hub 1 and blade 2 of the helicopter rotor, wherein five coding marking points are arranged on the rotor hub 1, which are respectively located at the center of the hub and at the same ...

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Abstract

The invention discloses a helicopter rotor blade movement parameter measurement method based on vibration correction and belongs to the technical field of vision measurement. The helicopter rotor blade movement parameter measurement method based on vibration correction comprises the following steps of placing a certain number of coded mark points on a hub and blades of a helicopter rotor; constructing a binocular stereo vision system to obtain helicopter rotor image data; calculating three-dimensional coordinates of the coded mark points and constructing a rotor coordinate system; calculatinga transient vibration displacement vector of the rotor in a high speed rotation state to correct the three-dimensional coordinates of the coded mark points; and on the basis of the corrected three-dimensional information of the coded mark points, calculating movement parameters of the rotor blades in the current transient state according to definitions of the movement parameters of the rotor blades. The helicopter rotor blade movement parameter measurement method based on vibration correction, disclosed by the invention, has the advantages that the movement parameters of the rotor blades can be accurately measured by correcting vibration displacement errors caused by rotor high speed rotation, the operation is simple, the method is in the non-contact form, the accuracy is high, and the safety is good.

Description

technical field [0001] The invention relates to the technical field of visual measurement, in particular to a method for measuring motion parameters of helicopter rotor blades based on vibration correction. Background technique [0002] The rotor is the core component of the helicopter, and the flight performance and flight life of the helicopter depend on its structural design, aerodynamic characteristics, and manufacturing, testing and testing levels. Among the many helicopter failures, the rotor system failure is the most common and accounts for the highest proportion. Therefore, both at home and abroad, the optimization of the helicopter rotor structure and the improvement of the aerodynamic characteristics of the rotor are researched as the core technology of the helicopter. Rotor blade motion parameters are comprehensive parameters that reflect the operating performance of the entire helicopter rotor system, so accurate measurement of them has become the key. [0003...

Claims

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Application Information

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IPC IPC(8): G01C11/02B64F5/60
CPCB64F5/60G01C11/02
Inventor 左承林马军梁磊岳廷瑞宋晋王勋年武文军张卫国
Owner AERODYNAMICS NAT KEY LAB
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