50results about How to "Reasonableness of judgment" patented technology

The invention discloses an artificial core analysis and preparation method for displacement experiments based on experiments and mathematical algorithms combining qualitative and quantitative methods. The physical parameters of the artificial core are taken as the target parameters for the preparation of the artificial core; the influencing factors of the physical parameters of the artificial core are determined; several combined experiment schemes are formulated, and the artificial core is made according to each combined experimental scheme, and the physical parameters of the artificial core are measured after the preparation is completed; Based on the preparation condition parameters of the experimental plan, based on the gray correlation analysis method, the correlation degree between each influencing factor and each target parameter is determined; according to the ranking of the correlation degree between each influencing factor and the target parameter, the larger influencing parameter and the smaller influencing parameter are determined ;Based on the statistical analysis results of the gray correlation method and BP neural network theory, a particle size ratio prediction mathematical model is established; the ratio prediction results are calculated through the particle size ratio prediction mathematical model, and this is used as a reference to provide data support for making artificial cores.

The invention discloses a platform type die detecting device. The device is characterized by comprising a horizontal guide rail supported through supports; a left die set sliding block and a right die set sliding block are arranged on the horizontal guide rail in a matched mode; a static die connecting plate is arranged on the left die set sliding block, and the connecting surface of the static die connecting plate is perpendicular to the horizontal guide rail; a moving die connecting plate is arranged on the right die set sliding block, and the connecting surface of the moving die connecting plate is perpendicular to the horizontal guide rail; the static die connecting plate and the moving die connecting plate are each provided with a heating device internally; a threaded hole is formed in the center of a rectangular platform; a heightening bolt which penetrates through the horizontal guide rail is arranged inside the threaded hole in a matched mode; the upper end of the heightening bolt is arranged under a lifting platform in an ejecting mode; a left extending body which extends to the lower portion of the horizontal guide rail is connected to the lower portion of the left die set sliding block; a right extending body which extends to the lower portion of the horizontal guide rail is connected to the lower portion of the right die set sliding block; a hydraulic cylinder is connected between the left extending body and the right extending body. The platform type die detecting device is used for die testing, a die-casting machine is not longer occupied, and the normal die casting production is not influenced.

The invention discloses an electromechanical coupling prediction method for the performance of a deformed distributed MEMS phase shifter. The method comprises the steps of 1) determining structure parameters, material attributes and electromagnetic working parameters of a distributed MEMS phase shifter; 2) determining equivalent circuit parameters of the distributed MEMS phase shifter; 3) determining a working environment condition; 4) performing mechanical analysis on a structure and extracting a maximum offset after structure deformation; 5) calculating the value of a variable capacitor composed of each MEMS bridge and a transmission line after structure deformation; 6) establishing an electromechanical coupling model of each MEMS bridge and calculating phase-shift magnitude; 7) calculating the phase-shift magnitude; and 8) judging whether the phase-shift magnitude of the phase shifter meets a requirement or not. The electromechanical coupling model for the structure parameters and the phase-shift magnitude of the distributed MEMS phase shifter, established with the method, can directly analyze the influence of the structure parameters on the phase-shift magnitude of the phase shifter, and can be used for quantitatively evaluating the influence of the structure deformation on the phase-shift magnitude of the distributed MEMS phase shifter in a load environment so as to guide the design and optimization of the distributed MEMS phase shifter.

The invention discloses a method and a system for analyzing the outlet / inlet section line capacity of an urban railway system. The method comprises the following steps of: (S1) determining line data, train data and signal system data and dividing a line into a plurality of intervals; (S2) simulating various tracking conditions in the running of trains according to the data and recording the time of all trains of clearing timing points to obtain the running time of the trains between the timing points; (S3) calculating outlet section traveling intervals under different tracking conditions according to a simulating result, calculating a final outlet section traveling interval according to the outlet section traveling intervals to obtain the outlet / inlet section line capacity of the trains, the reserved capacity and a station stopping time maximum value; and comparing the obtained parameters with running requirements as well as analyzing, and outputting a final analysis result. The method and the system improve the scientificity, the comprehensiveness and the accuracy of analyzing the outlet / inlet section line capacity, realize the automation of the analysis process of the outlet / inlet section line capacity and save the labor force.