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In this paper, a structure of single-phase tubular switched reluctance linear launcher (TSRLL) is presented, the initial dimensions are given. Moreover, sensitivity analyses of the key structural parameters are performed by the finite-element (FE) method. In order to improve the performance of TSRLL and solve the multiattribute decision-making problem well, a combined weighting method based on the fuzzy optimization iteration is proposed. Based on this algorithm, average electromagnetic thrust, electromagnetic force smoothing coefficient, and electromagnetic force copper loss ratio are chosen as optimization objectives. The calculated results show that the proposed algorithm is very suitable for multiobjective optimization of TSRLL. Also, the final scheme can meet the initial design requirements. The dynamic experimental results are consistent with the prototype test results. [ABSTRACT FROM AUTHOR]

In this paper, a tubular permanent magnet linear launcher (TPMLL) is proposed. Its basic structure is introduced, and initial dimensions are given. Devoted to improve the performance of TPMLL, an optimization method combined weight determination algorithm based on fuzzy optimization iteration is presented. Based on this, average electromagnetic thrust, electromagnetic force smoothing coefficient, and electromagnetic force copper loss ratio are selected as optimization objectives. The finite-element (FE) models are set up for the sensitivity analysis. The sensitivity analyses of key structural parameters are executed for these three optimization objectives. The final optimization results are obtained by calculation, and the performance of optimized launcher is compared with the initial one. It can be concluded that the proposed algorithm greatly improves the performance of TPMLL. [ABSTRACT FROM AUTHOR]