摘要
以白鲢(Hypophthalmichthys molitrix)和倾斜振动平台为研究对象,分析白鲢在倾斜振动平台上的运动规律。采用Matlab软件对白鲢鱼体在倾斜振动平台上的运动进行数值模拟,结果表明,定向时间随激振力大小、激振力与台面夹角、台面倾角、激振力频率变化。选择质量为1kg左右的白鲢,分别以试制的振动定向设备和高速摄影仪为试验装置和监测装置,通过数值模拟其在不同输入参数条件下的定向时间和定向成功率,得到台面倾角、激振力大小、激振力与台面夹角、激振力频率等因素对白鲢定向时间和定向成功率的影响规律。数值模拟和定向试验均表明,采用倾斜振动平台可以实现鱼体的头尾定向,在适宜的参数范围内,定向成功率可以达到100%,且定向时间随台面倾角、激振力大小、激振力与台面夹角、激振力频率的增大而降低。数值模拟结果与定向试验结果一致,表明所建立的鱼体运动模型能较好地描述鱼体在振动平台上的运动。
The inclined vibration platform and silver carps were used to explore theoretical basis of the vibration device for orientating fish＇s head and tail.The motion rules of silver carps on the platform were theoretically studied.After obtaining parameters of a fish,the movement of the fish on the inclined vibration platform was simulated by Matlab.The relationship of orientation time with size of excitation force, angle between excitation force and platform, dip angle of platform and frequency of excitation force was investigated.Taking self-manufactured orientation equipment as test equipment, high-speed camera as monitoring device and silver carps weighted about 1 kg as research objects, the orientation time and orientation success rates under different input parameters were studied.Based on the results of numerical simulation and experiment, the rules of orientation time and success rates with size of exciting force, angle between exciting force and platform,dip angle of platform and frequency of exciting force were cliscribed,which will provide important basis for designing the orientation device of freshwater fish head and tail.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
2017年第1期130-138,共9页
Journal of Huazhong Agricultural University
基金
中央高校基本科研业务费专项(2013PY126)
关键词
白鲢
振动定向
头尾定向
定向时间
激振力
silver carps
vibration orientation
orientation of head and tail
orientation time
excitation force
