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HORIZONTAL TWO-DEGREE-OF-FREEDOM ELECTROMAGNETIC VIBRATION ISOLATION APPARATUS BASED ON PARALLEL CONNECTION OF POSITIVE AND NEGATIVE STIFFNESS OF MAGNETIC ATTRACTION FORCE
HORIZONTAL TWO-DEGREE-OF-FREEDOM ELECTROMAGNETIC VIBRATION ISOLATION APPARATUS BASED ON PARALLEL CONNECTION OF POSITIVE AND NEGATIVE STIFFNESS OF MAGNETIC ATTRACTION FORCE
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机译：基于磁吸引力正和负刚度的平行连接的水平两度自由度电磁隔离装置
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摘要
A horizontal two-degree-of-freedom electromagnetic vibration isolation apparatus based on a parallel connection of positive and negative stiffness of a magnetic attraction force, comprising a stationary magnet fixing support (1), an X-direction magnetic spring (2), a Y-direction magnetic spring (3), a moving magnet mounting frame (4), and a load connecting member (5); the X-direction magnetic spring (2) and the Y-direction magnetic spring (3) are arranged vertical to each other and are connected in parallel; the X-direction magnetic spring (2) consists of a first stationary magnet (21), a first moving magnet (22), a second moving magnet (23), and a second stationary magnet (24) that are sequentially arranged in an array along an X axis, the first stationary magnet (21) and the first moving magnet (22) have an attractive effect, and the second moving magnet (23) and the second stationary magnet (24) have an attractive effect; and the Y-direction magnetic spring (3) consists of a third stationary magnet (31), a third moving magnet (32), a fourth moving magnet (33), and a fourth stationary magnet (34) that are sequentially arranged in an array along a Y axis, the third stationary magnet (31) and the third moving magnet (32) have an attractive effect, and the fourth moving magnet (33) and the fourth stationary magnet (34) have an attractive effect. The electromagnetic vibration isolation apparatus uses the design of a suspension structure without a guide mechanism, is low in natural frequency, high in magnetic material utilization rate, and high in design flexibility of the magnetic spring, and can achieve a horizontal two-degree-of-freedom low -frequency or ultra-low-frequency vibration isolation effect of a precise instrument.
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