Propeller blade quality evaluation method based on curved surface registration

Abstract

The invention discloses a propeller blade quality evaluation method based on curved surface registration, and the method comprises the steps: analyzing the curved surface of a propeller blade, and carrying out the curved surface parameterization; planning the number of measuring points of the curved surface according to curved surface parameterization; performing detection path planning on the planned number of the measurement points, and determining the positions of the detection points; carrying out data acquisition and curved surface coarse registration on the obtained measuring point position; searching the nearest point of the point cloud through a KDTree structure algorithm according to the position of the coarse registration measuring point; performing surface registration algorithmiteration on the nearest point until convergence; after the two point cloud sets complete the nearest point iteration of the whole, performing curved surface fitting on the two point cloud sets to complete the registration of the propeller curved surface blade; according to the method, the propeller blades are parameterized through space coordinates, then measurement point planning is carried out, data collection is carried out on determined measurement points, rough registration is carried out through NDT, iterative computation is carried out through a curved surface registration algorithm,registration of detection data and source data is completed, and therefore the quality evaluation precision is higher.

Description

technical field [0001] The invention relates to the technical field of propeller blade quality evaluation, in particular to a method for evaluating the quality of propeller blades based on surface registration. Background technique [0002] With the continuous development of modern manufacturing, quality assessment is becoming more and more important in the product manufacturing process. Quality assessment is mainly to ensure that the quality level of the product meets the standards, and it is also to ensure that processing errors can be discovered in advance and corrective measures are taken. The accuracy of the propeller blade surface determines the propulsion efficiency of the propeller, and it is particularly important to detect and complete product quality evaluation. At present, enterprises still need to manually complete the assessment of the accuracy of the blades, resulting in a slow process from manufacturing to application of the entire blade. Although colleges ...

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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides a method for evaluating the quality of propeller blades based on surface registration, which can solve the problem of low evaluation accuracy in the case of a large amount of point cloud data

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