以新型变桨风力机为研究对象,针对其变桨调节机构的齿轮齿条构件,进行了轻量化的优化设计。通过有限元分析,得到不同桨距角下的叶片扭矩以及传动杆推力,并采用风洞试验方法对传动杆推力进行验证,确定齿轮优化的初始载荷条件。基于SolidWorks软件对齿轮齿条构件参数化建模,以质量、齿根弯曲强度、齿面接触强度为优化目标,模数、齿数、齿宽为设计变量,建立了响应面模型,采用多目标遗传算法（MOGA）进行优化设计。优化结果表明：优化后齿轮齿条构件质量减轻43%,齿根弯曲应力增加23%,齿面接触应力减小17%,优化使该风力机变桨调节机构设计更为合理。
Abstract
Taking the new variable pitch wind turbine as the research object, the lightweight optimization design is carried out for the gear and rack components of its variable pitch regulating mechanism. Through finite element analysis, the blade torque and transmission rod thrust at different pitch angles are obtained, and the transmission rod thrust is verified by wind tunnel test method to determine the initial load conditions of gear optimization. Based on SolidWorks, the parametric modeling of gear and rack components was established. The response surface model was established with mass, bending strength of tooth root and contact strength of tooth surface as optimization objectives, and modulus, tooth number and tooth width as design variables. The multi-objective genetic algorithm （MOGA） was used for optimization design. The optimization results show that the mass of the gear rack component is reduced by 43%, the bending stress of the tooth root is increased by 23%, and the contact stress of the tooth surface is reduced by 17%. The optimization makes the pitch adjustment mechanism design of the wind turbine more reasonable.
关键词
风力机 /
齿轮 /
变桨距角 /
多目标优化 /
响应面法
Key words
wind turbines /
gear /
variable pitch angle /
multi-objective optimization /
response surface methhodology
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基金
国家自然科学基金（52266013）; 鄂尔多斯市科技合作重大专项（2021EEDSCXQDFZ009）; 内蒙古自治区重点研发和成果转化计划（2022YFHH0048）
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