工程设计学报2018，Vol.25Issue(2)：180-187,8.DOI:10.3785/j.issn.1006-754X.2018.02.008
精密可控震源隔振系统参数优化设计
Parameter optimization design for vibration isolation system of accurately controlled routinely operated seismic source
摘要
Abstract
The excessive amplitude of the weight of accurately controlled routinely operated seismic source(ACROSS)results in lowering output energy and signal to noise ratio(SNR)dur-ing the excitation.Since the vibration isolation system has a great influence on the weight vibra-tion,the parameter optimization design is carried out.Based on the theory of mechanical system dynamics and semi-infinite space,the dynamics model of ACROSS was established.The amplifi-cation coefficient index was established as the evaluation of the weight amplitude,then the rela-tionship between the index and the parameters of vibration isolation system was deduced,the in-fluence of the key parameters such as the stiffness and damping ratio of vibration isolation system on the index was analyzed by MATLAB.It was found that the stiffness and damping ratio of vi-bration isolation system had a great influence on the amplitude of the weight in the process of ex-citation.The irrational parameter design may cause weight severe vibration and even resonance. On this basis,the optimization algorithm was designed based on the coordinate alternation method to find the optimal parameter combination between the stiffness and damping ratio under different weight.The results showed that the weight vibration amplitude of optimized ACROSS was significantly reduced in the scanning bandwidth,and the maximum amplitude was reduced by 75% after optimization.The research results provide reference and guidance for the design of ACROSS vibration isolation system and a new way to enhance the energy transfer rate and SNR of ACROSS.关键词
精密可控震源/半无限空间/MATLAB/坐标轮换法Key words
accurately controlled routinely operated seismic source(ACROSS)/semi-infinite space/MATLAB/coordinate alternation method分类
能源科技引用本文复制引用
李琴,张凯,黄志强,李刚,郝磊..精密可控震源隔振系统参数优化设计[J].工程设计学报,2018,25(2):180-187,8.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA061201) （863计划）
中国石油天然气集团公司重大科技专项(2013E-3808) （2013E-3808）
