PERFORMANCE OF VERTICAL VIBRATION ISOLATION SYSTEM WITH GRAVITATIONAL POSITIVE FEEDBACK
Zhao Peng-fei (赵鹏飞)ad, Zhang Ping-hua (张平华)b, Tang Jia-xiang (唐家祥)c, Luo Jun (罗俊)a
a Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China; b Institute of High Energy Physics, Academia Sinica, Beijing 100080, China; c Department of Civil Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; d Department of Physics, Zhanjiang Normal College, Zhanjiang 524048, China
Abstract 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.
Received: 05 February 1998
Accepted manuscript online:
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