针对风电增速器的动态性能优化问题，以某型号大功率风电增速器齿轮传动系统为研究对象，采用双参数威布尔分布函数作为随机风速来模拟随机风速下的外部激励，依据集中质量法及牛顿第二定律建立了两级行星一级平行轴的大功率风电增速器动力学模型，研究其传动系统的动力学特性。在此基础上，以传动系统体积最小和构件扭转振动加速度振动幅值最小为优化目标，以可靠性和强度等为约束条件进行多目标动态优化设计，优化结果表明：优化后的风电增速器齿轮传动系统不仅实现了轻量化，而且在保证系统可靠度的前提下动态性能也得到了有效改善，达到了减振降噪的目的。

A dynamic model of NGW helical planetary gear transmission for high-power wind turbine gearbox is established by considering these factors as errors of gears and time-varying mesh stiffness by using mass centralized method. Moreover, the random wind velocity is simulated as external seismic excitation making the results more conform to practical condition. And on this basis, this system is optimized for minimum gearbox volume and minimum component torsional acceleration with the restriction of reliability and strength restrain. The result indicates that the optimized parameters make gear transmission lightweight and the dynamic property improved so as to reduing vibration and noised.

国家科技合作资助项目(2011DFB71670)。