4results about How to "High deformation accuracy" patented technology

This invention belongs to the field of structural optimization design, and specifically discloses a topology optimization method and system for accurately and efficiently controlling structural deformation characteristics. The method includes: performing finite element mesh generation on the structure to be optimized, which exhibits spring deformation characteristics, and defining design variables corresponding to the mesh; determining the total strain energy constraint of the structure based on the spring constant and maximum deformation, and establishing a first topology optimization model with the goal of minimizing the total structural volume; performing topology optimization based on the first topology optimization model to obtain the structural configuration and its total volume; setting an upper limit for the total structural volume constraint based on this total volume to construct the total structural volume constraint, while simultaneously using the total strain energy constraint of the first topology optimization model, and establishing a second topology optimization model with the goal of minimizing the p-norm of the local deformation error under external force; and performing topology optimization based on the second topology optimization model to obtain the final structural configuration. This invention is highly versatile, functionally diverse, and precise and efficient.

The utility model provides a sheet feeding mechanism, and belongs to the technical field of semiconductors. In order to solve the problem that the flatness of sheet materials is poor, the sheet feeding mechanism comprises a supply assembly, a feeding assembly, a discharging position and a mechanical arm. The material supply assembly is used for storing sheets and is connected with the feeding assembly so as to provide the sheets for the feeding assembly; the feeding assembly is used for transferring the sheets to the discharging position one by one in the first direction. The discharging position is provided with an arc-shaped surface, and the bending direction of the arc-shaped surface is opposite to that of the sheet; the mechanical arm comprises a mechanical arm main body and an execution part arranged at the tail end of the mechanical arm main body, and the execution part is used for applying pressure to the sheet on the arc-shaped surface at the discharging position to enable the sheet to be attached to the arc-shaped surface and then picking up the sheet. The arc-shaped surface of the discharging position is matched with the executing piece of the mechanical arm, reverse deformation of the sheets before picking is achieved, and therefore the flatness of the sheets is improved.

The application provides a kind of based on the implementation method and system of spaceborne interferometric and differential interferometric SAR of heterogeneous formation, comprising: design heterogeneous system synchronization;Design heterogeneous system orbit formation configuration;Establish spaceborne interferometric SAR and differential interferometric SAR model, respectively solve absolute interferometric phase and differential interferometric phase containing terrain and deformation information;Establish spaceborne interferometric SAR and differential interferometric SAR error sensitivity model, calculate system error sensitivity in the process of interference processing;Establish heterogeneous system interferometric SAR calibration model.The application proposes two kinds of orbit formation configuration design of spaceborne interferometric SAR system based on fly-around mode and differential interferometric SAR system based on follow mode, breaks through the traditional heterogeneous interferometric SAR and differential interferometric SAR system, effectively solves the problems of low interference efficiency, long revisit period and difficult to realize business operation of single-satellite multi-pass interferometric SAR system, can greatly shorten the same wave bit observation period, significantly improves the data acquisition efficiency.

This invention discloses a deformable blade design method based on solving the electromechanical coupling matrix equations, belonging to the field of engine blade design technology. Starting from a fully tessellated MFC (Mechanical-Fuel-Coupling) scheme, the method uses the finite element method to discretize and derive the key matrices of the electromechanical coupling system, establishing quasi-static electromechanical coupling control equations. Ill-conditioned problems in the equation set are addressed through voltage degree-of-freedom scaling preprocessing, and the driving voltage distribution is solved in conjunction with target deformation constraints. The birth and death element method is introduced to quantify the contribution of MFC elements at different locations to deformation, gradually eliminating inefficient elements and generating an optimized arrangement and driving scheme. For complex three-dimensional blades, static condensation and implicit iteration of inner and outer layers are used to reduce the computational scale, and the MFC polarization and driving direction setting problems are solved through the element coordinate system method. This invention eliminates the need for repeated iterative trial and error, significantly improving the efficiency of deformable design and achieving high deformation accuracy, providing a systematic design method for the engineering application of controllable deformable blades.