静叶调节机构尺度全局优化设计方法研究

doi:10.3901/JME.2020.11.026

机械工程学报 ›› 2020, Vol. 56 ›› Issue (11): 26-36.doi: 10.3901/JME.2020.11.026

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静叶调节机构尺度全局优化设计方法研究

唐佑远, 郭为忠

上海交通大学机械系统与振动国家重点实验室上海 200240

收稿日期:2019-10-11 修回日期:2020-02-14 出版日期:2020-06-05 发布日期:2020-06-12
通讯作者: 郭为忠(通信作者),男,1970年出生,博士,教授,博士研究生导师。主要研究方向为并联机构学、重大装备创新设计等。E-mail:wzguo@sjtu.edu.cn
作者简介:唐佑远,男,1990年出生。主要研究方向为机构学。E-mail:youyuantang@foxmail.com
基金资助:
国家自然科学基金（51735009）资助项目。

Global Dimensional Optimization for the Design of Adjusting Mechanism of Variable Stator Vanes

TANG Youyuan, GUO Weizhong

State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240

Received:2019-10-11 Revised:2020-02-14 Online:2020-06-05 Published:2020-06-12

摘要/Abstract

摘要： 为避免航空发动机喘振，高压压气机的可调静叶需要按照拟定的调节规律转动。静叶调节机构是驱动可调静叶转动的执行机构，一般采用多级联动调节的方式。由于拟定的静叶调节规律十分复杂，且多级静叶调节机构之间运动学耦合，静叶调节机构的尺度设计问题非常困难。目前一般采取逐级分解、单级优化的局部优化策略设计机构参数，无法获得全局最优的机构设计参数。为提高静叶调节精度，通过分析静叶调节机构运动学特点，提出正-逆运动学结合的机构尺度全局优化设计方法：先进行基于逆运动学解析解的全局、高效参数优化设计，再进行基于正运动学数值解的机构参数高精度优化求解，有效解决了静叶调节机构的全局尺度优化设计难题。通过案例分析，验证了所提设计方法的有效性和实用性。

关键词: 高压压气机, 静叶调节机构, 机构尺度优化, 正-逆运动学结合, 全局优化

Abstract: In order to avoid the problem of compressor surge, the variable stator vane (VSV) needs to follow the rules established by hydromechanics. The VSV is normally composed of several connected stages and actuated by one adjusting mechanism that contains several coupled spatial linkage mechanism units. It is difficult to perform the dimensional synthesis of the VSV adjusting mechanism since this mechanism is a coupled system of the several spatial linkage units and the rules established by hydromechanics are also complicated. Currently, a divide and conquer method is applied to synthesize the dimensions of the VSV adjusting mechanism by synthesizing the spatial linkage mechanism units one by one, hereafter the global optimization is unable to be achieved. In order to improve the VSV’s adjustment accuracy, a novel global dimensional synthesis method is proposed by combining the forward kinematics (FK) and inverse kinematics (IK) considering the analytical solvability of the FK and IK models. An efficiently global optimization is achieved firstly to provide the initial solution by using the analytical IK model and then a global optimization of high accuracy is achieved by searching from the initial solution based on the numerical FK model. A case study is given to demonstrate the proposed method.

Key words: high pressure compressor, adjusting mechanism of variable stator vanes, dimensional optimization, combined forward and inverse kinematics, global optimization

中图分类号:

TG156

唐佑远, 郭为忠. 静叶调节机构尺度全局优化设计方法研究[J]. 机械工程学报, 2020, 56(11): 26-36.

TANG Youyuan, GUO Weizhong. Global Dimensional Optimization for the Design of Adjusting Mechanism of Variable Stator Vanes[J]. Journal of Mechanical Engineering, 2020, 56(11): 26-36.

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静叶调节机构尺度全局优化设计方法研究

Global Dimensional Optimization for the Design of Adjusting Mechanism of Variable Stator Vanes

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