45results about How to "Solution implementation" patented technology

The invention relates to a linear real-time estimation method of a conductivity resistance-capacitance network parameter, belonging to the technical field of solution conductivity soft measurement. The method is characterized by comprising the following steps of: converting the measurement of solution conductivity into the parameter estimation of an equivalent resistance-capacitance network: on the basis of a mathematical model between a square wave excitation signal, a response direct-current voltage signal and two resistance and capacitance parameters of the equivalent resistance-capacitance network, carrying out multi-element polynomial fitting on the non-linear model off line; adopting an alternating-current square wave excitation resistance-capacitance network of various frequencies by taking the existence of various uncertainties into account during on-line measurement; meanwhile, establishing an over-determined equation set by utilizing the off line fitted multi-element polynomial model; and obtaining the real-time estimation of a resistance-capacitance parameter through a Gauss elimination finite step arithmetic operation and a radical operation of quartic equation solvingon the basis of linear least square principle. The method has the advantages of higher estimation speed and stronger anti-jamming capability and is suitable for the on-line real-time accurate measurement of the conductivity industry.

The invention discloses a centralized online planning method for a satellite observation network. The method includes: step 1) when the satellite observation network does not observe the target, use the celestial coverage of the satellite observation network; calculate the initial optimization objective function Numerical value; step 2) using the initial optimized objective function value to construct an alternative observation plan set; step 3) calculating the time coverage of each satellite in the current available satellite set to the current target; for the satellites in the currently available satellite set according to Arrange in descending order of time coverage; step 4) according to the sorting results, carry out binary tree pruning optimization to the satellites in the current available satellite collection, calculate the time coverage of each candidate satellite combination and the optimization objective function value of the comprehensive observation performance index; comprehensive observation The performance index comprehensively considers the time coverage and the celestial sphere coverage; step 5) select the satellite combination with the largest value of the optimized objective function as the satellite to perform the observation task of the target.

The invention relates to a heterogeneous parallel computing method for row update of sparse matrix LU decomposition. Based on the superlu algorithm and combined with the master-slave heterogeneous characteristics of TaihuLight, the present invention enables the superlu solver to transfer large-scale computing tasks to the slave core during the matrix decomposition stage and update the row, and utilize the slave core group Efficient computing and data communication capabilities, improve the computing power of solving ultra-large-scale sparse matrix, and further improve the overall performance of the solution. The present invention carries out the mode of task division according to the data of matrix, divides matrix data block by row, at first opens up a matrix space for each slave core, each slave core is responsible for the solution of several matrix rows, in seeking lower triangular identity matrix In the process of linear equations of this type, each line of data is independent of each other, avoiding conflicts and dependencies in the solution space, and successfully solving the equations.

The present invention provides a method for predicting the surface tension of molten slag based on melt structure analysis, comprising: S1, obtaining the oxygen bond type and oxygen bond mole fraction of the molten slag to be tested; S2, inputting the oxygen bond type and oxygen bond mole fraction in advance The trained slag surface tension prediction model, and solve the slag surface tension prediction model to obtain the predicted value of the slag surface tension to be measured; the slag surface tension prediction model includes the thermodynamic balance and Gibbs free energy theory, considering The formation mechanism of the surface tension of oxide melt, and the prediction equation of the surface tension of slag constructed by combining the oxygen bond type and the oxygen bond mole fraction of the slag. Improve the prediction accuracy and stability of slag surface tension.

The invention provides a method and a device for solving a disassembling path of a product pipe piece, belonging to the mechanical engineering field. The method for solving the disassembling path of the product pipe piece comprises the following steps of: setting an initial disassembling pose and an end disassembling pose of the product pipe piece to be disassembled; solving the path from the initial disassembling pose to the end disassembling pose to obtain a first path; and optimizing the first path to obtain the disassembling path of the product pipe piece. The technical scheme of the invention can solve the disassembling path of the product pipe piece in complex products, thereby improving the solving efficiency of the product disassembling path.

The invention discloses a method for analyzing the water-entry cavity characteristic of a navigation body and belongs to the field of fluid mechanical engineering. The method comprises a step of performing meshing and boundary condition setting on a whole drainage basin formed by water and air domains and applying a boundary data immersion method and a volume fraction method to an N-S equation, astep of realizing the simulation of an immersed object in multi-phase flow by introducing the boundary data immersion method, a step of realizing the tracking of a fluid interface by introducing the volume fraction method, and a step of solving the speed and pressure of the drainage basin by using a two-step projection method. According to the invention, the cavity flow numerical simulation of thewater-entry navigation body can be achieved to reveal the water-entry cavity flow law and mechanism of the navigation body, therefore, a theoretical basis is provided for the structural design of thewater-entry navigation body, the practical application engineering problem of the water-entry navigation body can be solved, and the method has the advantages of high design efficiency, short designperiod and the facilitation of practical application.