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Abstract: After
analyzing the influence of a good many factors on the viscous damper
force and yield damper force separately, a kind of multi-annular
electrode structure which is to enlarge the controllable range of ER
damper force is presented. A test system, which can obtain the ER
damper’s behaviors, such as damper coefficient, respond time and power
wasting, is also introduced In order to fully utilize the controllable
range of ER damper force, the match problem about the damper force and
the vibration isolation system using the ER damper is studied. Since the
ER damper coefficient is non-linear, a damper design principle that the
average damper coefficient should match the damper coefficient of the
optimal passive damper is proposed. In the end, an experiment of using
ER damper in a double deck isolation system is described. The exciting
source is a sweep signal and the damper force is adaptively controlled
through online main frequency identification. Experimental results
present about 30% better isolation effect than using normal damper.
Key words: Electrorheological damper Frequency identification
Vibration control Damper adaptive control
CLC No: B533
国防科技预研基金(JW0301)和教育部资助优秀年轻教师基金(1024897002)资助项目.
Received 20010509, received
in revised form 20010926
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