Antenna model load displacement measurement method of mixed basis function
An antenna model, load displacement technology, applied in CAD numerical modeling, design optimization/simulation, etc., can solve problems such as inaccuracy, deviation, neglect of support structure deformation, etc., to improve accuracy, achieve accurate measurement, and avoid parameter mapping Effect
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[0062] The present invention will be further described below in conjunction with the antenna model.
[0063] Embodiments of the present invention are as follows:
[0064] by figure 2 The antenna shown is an example. The precision error generated by the antenna structure under the action of external forces such as self-weight and wind load will change the distribution of the electromagnetic amplitude and phase of the antenna aperture. The red dotted line in the figure indicates the deformed reflecting surface, and the shape error Δ will eventually affect the far-field electrical performance of the antenna. .
[0065] (1) Use the Euler-Bernoulli beam element based on NURBS and the Kirchhoff-Love shell element based on unstructured T-splines to construct the truss and reflector of the antenna structure, such as image 3 , the yellow part is the main reflector, and the blue part is the antenna support. Analyze the shape error of the reflector antenna under the action of gravi...
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