Six axis active vibration isolation and payload reaction force compensation system
First Claim
1. A vibration isolation and payload reaction force compensation system comprising:
- a base having a movable payload supporting assembly; and
a plurality of isolation legs disposed to support said base on a ground surface, each isolation leg comprising;
a housing disposed to contact said ground surface, andan elastomeric support member having balanced horizontal and vertical stiffness coupled to said housing and disposed to support and isolate said base from direct contact with said housing, and to attenuate seismic forces transmitted from said ground in all directions.
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Accused Products
Abstract
An active vibration isolation and payload reaction force compensation system includes a number of isolation legs which support equipment subject to undesirable vibrations. Each leg includes an elastomeric support member which supports the mass of the equipment and attenuates seismic forces transmitted from the ground to the system. A number of force actuators fixed to each leg and to the equipment in oppositely directed pairs provide forces directed to compensate for motions of the equipment. Six accelerometers are provided on the equipment to measure accelerations in six degrees of freedom. A control system, responsive to signals from the accelerometers, causes actuation of the force actuators.
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Citations
17 Claims
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1. A vibration isolation and payload reaction force compensation system comprising:
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a base having a movable payload supporting assembly; and a plurality of isolation legs disposed to support said base on a ground surface, each isolation leg comprising; a housing disposed to contact said ground surface, and an elastomeric support member having balanced horizontal and vertical stiffness coupled to said housing and disposed to support and isolate said base from direct contact with said housing, and to attenuate seismic forces transmitted from said ground in all directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An isolation leg for use with a vibration isolation and payload reaction force compensation system having a base with a movable payload supporting assembly and a plurality of isolation legs disposed to support said base on a ground surface, each isolation leg comprising:
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a housing disposed to contact said ground surface; and an elastomeric support member having balanced horizontal and vertical stiffness coupled to said housing and disposed to support and isolate said base from direct contact with said housing, and to attenuate seismic forces transmitted from said ground in all directions. - View Dependent Claims (14, 15, 16, 17)
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Specification