柳淑学

个人信息Personal Information

研究员

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:水利工程系

电子邮箱:liusx@dlut.edu.cn

扫描关注

论文成果

当前位置: 中文主页 >> 科学研究 >> 论文成果

A piston-type active absorbing wavemaker system with delay compensation

点击次数:

论文类型:期刊论文

发表时间:2015-12-01

发表刊物:CHINA OCEAN ENGINEERING

收录刊物:SCIE、EI、ISTIC、Scopus

卷号:29

期号:6

页面范围:917-924

ISSN号:0890-5487

关键字:wavemaker; active absorption; IIR digital filter; time delay

摘要:Physical model tests with highly reflective structures often encounter a problem of multiple reflections between the structures and the wavemaker. This paper presents a piston-type active absorbing wavemaker system which can absorb most of the reflections. Based on the first-order wavemaker theory, a frequency domain absorption transfer function is modeled. Its time realization can be achieved by designing an IIR digital filter, which is used to control the absorbing wavemaker system. In a real system, time delays often exist in the wave making process. Thus a delay compensation term to the transfer function is proposed. Experimental results show that the system performs well for both regular and irregular waves with periods from 0.6 s to 2.0 s, and the absorption capability is larger than 96.5% at target wave fields.