基于遗传算法的胸鳍推进性能优化研究

Research on optimization of propulsion performance of labriform pectoral fin based on genetic algorithm

由于鱼类胸鳍的推进性能是和其运动学参数直接相关的,为了进一步提高胸鳍的推进性能,建立了胸鳍推进运动的运动学模型,对在推进运动过程中胸鳍所受到的水动力进行了计算,并建立了对其推进性能进行优化的数学模型,然后,采用MATLAB编写了相应的遗传优化算法,以对胸鳍推进性能进行了优化设计。最后,对优化结果和胸鳍的推进性能进行了仿真分析,从仿真结果可以看出,所建立的优化模型以及所采用的优化算法能够较好的对胸鳍的性能进行优化,提高了胸鳍在推进过程中的推进力。因此,所进行的优化分析是合理、有效的,为进一步提高胸鳍的推进性能提供了一定的理论依据。

Since the propulsion performance of fish pectoral fin is directly related to its kinematic parameters,for improving the propulsion performance of pectoral fin,a kinematic model of pectoral fin propulsion motion was established,and the hydrodynamic force during propulsion motion was calculated.In addition a mathematic model with optimized propulsion performance was established.Then MATLAB was used to make the corresponding genetic optimal algorithm,and its optimal solution was developed as well.At last,simulation analysis for the optimal result and the propulsion performance of pectoral was made,which result indicates that the optimal model established and the optimal algorithm adopted can optimize the pectoral fin performance well and improve the thrust of pectoral fin during propulsion.Therefore,the optimal analysis developed in this paper is reasonable and effective as well as provides theoretical reference for the research on the propulsion performance of pectoral fin.