混合臂式高空作业车变幅系统多目标优化
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摘要
为使结构形式、复合运动复杂的混合臂式高空作业车变幅系统在动态变幅中达到最优效果,对臂架受力分析,借助多目标优化理论定量确定臂架危险位姿。在考虑惯性冲击的情况下以臂架所受振动冲击、油缸流量变化、油缸行程及平台运动突变最小为优化目标,各变幅三铰点位置和油缸直径为设计变量,基于MATLAB优化工具箱中信赖域反射算法对目标函数进行多目标优化并对比优化前后各目标。结果表明,整体平均优化比例达12.57%,此方法能得到更合理的铰点位置和油缸直径,同时也为解决不同臂型高空作业车铰点优化问题提供了一种更加合理的途径。
In order to achieve the optimal effect during the dynamic variance of the mixing-jib overhead working truck with complex structure and compound motion,the force analysis of the jib was determined quantitatively by the multi-objective optimization theory.Taken the vibration shock of the jib,the cylinder flow change,the distance and the platform movement mutation to minimum as optimization goals and the location of the three-point hinge and the cylinder diameter as design variable in the case of inertia impact.Then optimised the objective function based on trust region reflective in MATLAB and compared the previous with the latter goals.The results show that the overall optimization ratio is up to 12.57%.The method which provides a more reasonable way to solve the hinge optimization problem of different mixing-jib overhead working truck can obtain a more reasonable hinge position and cylinder diameter.
In order to achieve the optimal effect during the dynamic variance of the mixing-jib overhead working truck with complex structure and compound motion,the force analysis of the jib was determined quantitatively by the multi-objective optimization theory.Taken the vibration shock of the jib,the cylinder flow change,the distance and the platform movement mutation to minimum as optimization goals and the location of the three-point hinge and the cylinder diameter as design variable in the case of inertia impact.Then optimised the objective function based on trust region reflective in MATLAB and compared the previous with the latter goals.The results show that the overall optimization ratio is up to 12.57%.The method which provides a more reasonable way to solve the hinge optimization problem of different mixing-jib overhead working truck can obtain a more reasonable hinge position and cylinder diameter.
引文
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[3]石鹏飞,谢世惠,邓彪.利用ADAMS的泵车臂架连杆机构优化设计与模拟[J].现代制造工程,2011(10):66-69+92.(Shi Peng-fei,Xie Shi-hui,Deng Biao.A optimal design and simulation of pump boom linkage mechanism using ADAMS[J].Modern Manufacturing Engineering,2011(10):66-69+92.)
[4]胡仕成,宋晶晶,王祥军.混凝土湿喷机臂架系统的动力学建模与分析[J].工程设计学报,2014(3):227-234.(Hu Shi-cheng,Song Jing-jing,Wang Xiang-jun.Dynamic modeling and analysis of concrete wet-blown boom system[J].Journal of Engineering Design,2014(3):227-234.)
[5]Chung J S,Bao B.N.A coupled finite element method for fracture analysis[J].Journal of Materials Processing Technology(0924-0136),1997,21(3):69-77.
[6]李钦奉,江伟,张礼军.多功能高空作业平台伸缩臂的有限元分析与优化[J].机械设计与制造,2012(5):270-272.(Li Qin-feng,Jiang Wei,Zhang Li-jun.Finite element analysis and optimization of telescopic arm for multifunctional aerial work platform[J].Mechanical Design and Manufacture,2012(5):270-272.)
[7]孙靖民.机械优化设计[M].北京:机械工业出版社,2006.(Sun Jing-min.Mechanical Optimization Design[M].Beijing,China:Mechanical Industry Press,2006.)
[8]席盛,周振平,张辉.基于遗传算法的轮式起重机变幅三铰点优化[J].建筑机械,2013(3):86-89.(Xi Sheng,Zhou Zhen-ping,Zhang Hui.Optimization of three-hinge point of wheeled crane based on genetic algorithm[J].Construction Machinery,2013(3):86-89.)
[9]陈华波,周志雄,黄向明.高空作业平台臂架运动仿真分析[J].机械设计与研究,2011(1):22-25+30.(Chen Hua-bo,Zhou Zhi-xiong,Huang Xiang-ming.Analysis of boom movement of aerial work platform[J].Mechanical Design and Research,2011(1):22-25+30.)
[10]高顺德,陈子昂,滕儒民.高空作业平台折叠臂变幅机构分析及优化[J].中国工程机械学报,2012(4):403-407.(Gao Shun-de,Chen Zi-ang,Teng Ru-min.Experimental analysis and optimization of folding arm luffing mechanism of aerial work platform[J].Journal of China Construction Machinery,2012(4):403-407.)