【目的】针对航空用大型传动部件对其转矩密度、运行效率和可靠性有较高的要求，以及传统机械齿轮存在易磨损、无过载保护及维护成本高等问题，本文设计了一种大型磁场调制式齿轮。【方法】通过对航空用大型磁场调制式齿轮的结构特点与设计指标要求进行深入剖析，尽可能增加转矩传递密度，同时兼顾工作效率、转矩波动等性能。采用非线性约束遗传算法进行多目标优化设计。基于优化后的电磁设计方案，利用有限元法分析其电磁特性、关键部件的应力分布特性以及运行时的温升情况。【结果】多物理场分析结果表明，本文设计的磁场调制式齿轮输出功率可达500 kW且运行平稳，效率达96.17%，叠压制成的调磁块以及永磁体叠片可以有效降低铁耗。在稳定运行状态下，采用碳纤维作为转子绑扎套的关键部件应力满足强度要求，各部件温度均未超过材料许用温度。【结论】分析结果验证了该设计的合理性与可行性，为航空用大型磁场调制式齿轮的设计和应用提供了理论依据，具有一定的工程参考价值。

[Objective] In response to the high requirements including torque density, operating efficiency, and reliability for large transmission components used in aviation, as well as the mechanical gears have problems including easy wear, lack of overload protection, and high maintenance costs. Therefore, a large magnetic field modulation gear is designed in this paper. [Methods] Through analysis for the structural characteristics and design requirements of large magnetic field modulation gears which used in aviation, torque transmission density would be increased as much as possible while considering performance such as efficiency and torque fluctuation. A nonlinear constrained genetic algorithm was used for multi-objective optimization design. Based on the optimized electromagnetic design scheme, finite element method was used to analyze the electromagnetic characteristics, stress distribution characteristics for key components, and temperature rise during operation. [Results] According to the results of multi-physics field analysis, the output power of the proposed magnetic field modulation gear had been reached 500 kW. It could operate smoothly with an efficiency reached 96.17%. The laminated magnetic adjustment block and permanent magnet laminations could effectively reduce core-loss. During its stable operation, the stress of key components inside the rotor could meet the strength requirements by using carbon fiber as the rotor binding sheath, and the temperature of each component had not exceed the allowable material temperature. [Conclusion] The analysis results have verified the rationality and feasibility for the design, which providing a theoretical basis for the design and application of large aviation magnetic field modulation gears, and having certain engineering reference value.

辽宁省教育厅基本科研项目(青年项目) (LJKQZ20222331)