An Optimum Design Method for Magnetic Circuit Structure of Electromagnetic Flow Sensor

Abstract

The invention relates to a magnetic circuit structure optimization design method of an electromagnetic flow sensor. It includes the following steps: constructing the initial finite element simulation model of the sensor according to the physical prototype of the sensor; designing the level table of influencing factors, designing the test program by using the central composite design (CCD) method and simulating and solving the test program; inputting the design variables and correspondingly solving the response Value output, constructing the response surface objective function of each response required for optimization; using genetic algorithm to nonlinear multi-objective optimization of the response surface objective function to obtain the optimal magnetic circuit structure parameters; three-dimensional modeling based on the optimal magnetic circuit structure parameters And finite element simulation solution to verify the optimization effect. The present invention can carry out the comprehensive optimization design of the magnetic circuit structure of the sensor under the limitation of constant power consumption of the system and certain dynamic characteristics, thereby improving the measurement accuracy of the sensor, improving the efficiency of research and development, reducing the production cost, and being beneficial to realize the normal structure of the magnetic circuit structure of the sensor. towards development.

Description

technical field [0001] The invention relates to the technical field of flow sensor structure design, in particular to a magnetic circuit structure optimization design method of an electromagnetic flow sensor. Background technique [0002] Electromagnetic flow sensors have the advantages of simple structure, no pressure loss, high precision, large measurement range, and reliable use, and are widely used in flow measurement fields such as industry, agriculture, and medicine. In order to achieve high-precision measurement of electromagnetic flow sensors, it is necessary to enhance the magnetic induction intensity and improve the uniformity of the magnetic field, so that the induced electromotive force signals at both ends of the electrodes are enhanced. There are generally three ways to increase the magnetic induction intensity, one is to increase the excitation current, the other is to increase the number of coil turns, and the third is to increase the amount of ferromagnetic ...

AI Technical Summary

Problems solved by technology

Since there are many influencing factors, and different combinations of various factors will form different magnetic circuits, it will take a lot of time to use the traversal simulation test method, and it is impossible to reveal the essential characteristics of each parameter of the magnetic circuit structure

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