Method for optimizing electromagnetic linear characteristics of proportional electromagnet
A proportional electromagnet, linear characteristic technology, applied in the direction of magnetic objects, multi-objective optimization, design optimization/simulation, etc., can solve the problems of strong nonlinearity, difficult search, high calculation and analysis cost, and achieve improved product performance and low cost. Effect
Pending Publication Date: 2021-06-29
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
At present, the optimization of the linear characteristics of the electromagnetic force of the proportional electromagnet often relies on the designer's experience, repeatedly modifying the structural parameters, and arranging a limited number of parameter combinations for experiments or numerical simulation analysis, so as to select the parameter combination with the best performance. On the other hand, the relationship between the performance objectives, constraints and design variables of the linear characteristic of the proportional electromagnet electromagnetic force cannot be explicitly expressed, the optimization problem may be non-convex and strongly nonlinear, and the optimization directly based on the numerical simulation analysis of the system is also difficult. It is difficult to search for the global optimal solution, and at the same time, the cost of calculation and analysis is high, which makes the improvement of the linear characteristics of the electromagnetic force of the proportional electromagnet face certain challenges
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[0038] combine figure 1 The embodiment is described in detail. The embodiment provides a method for optimizing the linear characteristic of the electromagnetic force of the proportional electromagnet, and the specific embodiment is as follows.
[0039] Step 1. Determine the design parameters
[0040] The design parameters mainly include: cone angle α, cone radius r 1 , cone length l 1 , skeleton radius r 2 , The end face clearance l when the armature reaches the maximum displacement 2 ,Such as figure 2 As shown, the design parameters of the linear characteristic optimization problem of the proportional electromagnet electromagnetic force are
[0041] X=(α,r 1 , l 1 ,r 2 , l 2 ).
[0042] Step 2. Determine the constraints
[0043] Constraints are specifically the value range of each design parameter, that is,
[0044] x l ≤X≤X u ;
[0045] Among them, X l is the lower limit of the design parameter, X u is the upper limit of the design parameter.
[0046] Step...
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The invention discloses a method for optimizing electromagnetic linear characteristics of proportional electromagnet, and belongs to the field of proportional electromagnet optimization design. The method comprises the following steps: firstly, determining design parameters and constraint conditions, and defining a multiple correlation coefficient R2 between current and electromagnetic force as an optimization target; then constructing a function relationship between the design parameters and the optimization target; determining a proportion electromagnet electromagnetic linear characteristic optimization mathematical model; and finally, solving the proportion electromagnet electromagnetic linear characteristic optimization mathematical model, and obtaining an optimization design solution. According to the optimization method, numerical simulation and an approximate model are combined, the electromagnetic linear characteristics of the proportion electromagnet can be optimized efficiently at low cost, and the product performance of the proportion electromagnet can be improved.
Description
technical field [0001] The invention belongs to the field of optimal design of a proportional electromagnet, and in particular relates to a method for optimizing the linear characteristic of the electromagnetic force of a proportional electromagnet. Background technique [0002] Proportional electromagnet, as the electric-mechanical conversion device of the electro-hydraulic proportional control element, is a widely used automatic control element, which can make the pressure and flow of the liquid flow continuously and proportionally follow the control signal. It has the advantages of low cost, simple structure, good versatility, and strong anti-pollution ability. In order to realize the proportional control characteristics of the proportional electromagnet, its electromagnetic force is required to have good linear characteristics, that is, the control current and the output electromagnetic force have a good linear relationship. At present, the optimization of the linear ch...
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IPC IPC(8): G06F30/20G06F30/17H01F7/121G06F111/04G06F111/06G06F111/10G06F119/14
CPCG06F30/20G06F30/17H01F7/121G06F2111/06G06F2111/04G06F2111/10G06F2119/14Y02T90/00
Inventor 刘鹏欧阳宇文邓家福吴钢胡林刘玉玲盘江强
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY