Electromagnetic thrust bearing structural parameter optimization method based on double-target genetic algorithm
A technology of electromagnetic thrust and structural parameters, which is applied in the field of optimal design of electromagnetic thrust bearing structural parameters, can solve the problems of high eddy current loss affecting dynamic characteristics and increasing temperature constraints, so as to avoid irreversible losses, high precision, and increase constraints conditional effect
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[0083] In the present invention, the bearing mass f 1 (x) and the energy loss f of the coil 2 (x) is the objective function, so the relationship between the evaluation function and weighting factors is:
[0084]
[0085] ω 1 , ω 2 The value is between 0 and 1, and the incremental value is 0.1, and 9 groups of situations are obtained according to the permutation and combination method:
[0086]
[0087] Considering that the objective function of the present invention includes that the quality of the bearing and the energy loss of the coil have similar influence and importance on the whole, so here we take ω 1 = ω 2 = 0.5.
[0088] to ω 1 = ω 2 =0.5 In this case, use the genetic algorithm to optimize the Pareto optimal solution set under different iterations (20, 50, 100), and calculate the f corresponding to each Pareto optimal solution 1 and f 2 , and then select a set of iterations with the smallest total fitting residual as 100.
[0089] According to the bear...
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