%0 Journal Article
%T PERFORMANCE OF VERTICAL VIBRATION ISOLATION SYSTEM WITH GRAVITATIONAL POSITIVE FEEDBACK<br>
%A Zhao Peng-fei
%A Zhang Ping-hu
%A Tang Jia-xiang
%A Luo Jun
%A <br>
%J 中国物理 B
%D 1998
%I 
%X A new model of vertical vibration isolation system is presented in the paper. It is principally constructed by mounting an additional mass on the simplest passive vertical isolator, which can give rise to gravitational positive feedback. By theoretical analyzing and numerical calculating, we come to a conclusion that the resonant frequency is decreased in the new system, which agrees with the result of the experiment.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=2AB4174ACB42FE90EC9EB060435704D7&yid=8CAA3A429E3EA654&vid=DF92D298D3FF1E6E&iid=F3090AE9B60B7ED1&sid=195767709E606C85&eid=626A0FE8E3130AB5&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0