A harmonic reducer flexspline structure integrated optimization method based on a gradient descent method

Abstract

The invention discloses a harmonic speed reducer flexspline structure integrated optimization method based on a gradient descent method, which adopts a gradient descent optimization algorithm to optimize the key structural parameters of the harmonic speed reducer flexspline. The method uses Solidworks to accurately model the flexspline, and establishes a flexspline parametrized model with teeth. A.vbs file is created, the flexspline parameterized model is exported to a .Igs file for ANSYS finite element analysis, the maximum stress in finite element simulation is extracted, isight is adoptedto integrate Solidworks, ANSYS and MATLAB to define the optimization parameters, optimization objectives and constraints of the flexspline. The structure of the flexspline is optimized based on the gradient descent optimization algorithm. Finally, the flexspline structural parameters with the smallest volume and the rated life are obtained. The optimization algorithm used in the invention greatlyreduces the optimization iteration times, considers the influence of the flexspline teeth on the stress and the service life of the harmonic speed reducer, and establishes a flexspline parameter modelwith teeth consistent with the actual working condition.

Description

technical field [0001] The present invention relates to an integrated optimization method of the flexible gear of the harmonic reducer based on the gradient descent method, using the isight integrated three-dimensional modeling software SolidWorks, the finite element analysis software ansys and the software of MATLAB to use the gradient descent optimization algorithm to optimize the flexible gear of the harmonic reducer Carry out structural parameter optimization. Background technique [0002] Harmonic gear transmission is a new type of transmission that relies on the elastic deformation of flexible gears to achieve force and motion transmission. It generally consists of three components: a wave generator, a rigid wheel and a flexible wheel. Harmonic gear transmission has the advantages of large transmission ratio, small size, light weight, large output torque, coaxial line, small hysteresis, accurate positioning, high efficiency, and stable movement. The demand for lighter...

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Problems solved by technology

[0004] For the defects of the existing flexspline structure optimization method, the purpose of the present invention is to propose a kind of harmonic reducer flexspline structure integration optimization method based on the gradient descent method, the present invention is based on the gradient descent optimization algorithm (LSGRG), based on the isight software platform Integrate the 3D modeling software SolidWorks, the finite element analysis software ansys and the numerical calculation software MATLAB to optimize the key structural parameters of the harmonic reducer flexible spline, and use the SolidWorks 3D modeling software to establish accurate flexible splines, rigid splines, and wave generators In this model, the flexible spline and the rigid spline have tooth shapes with precise parameters. By using ANSYS simulation software, the deformation and stress of the flexible spline during the pre-assembly of the wave generator and the meshing process with the rigid spline are truly simulated. Through the analysis results, the optimization goal is to minimize the volume of the flexible spline, and the rated life of the reducer and the torsional stiffness during operation are used as constraints for optimization.

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