초록 ▼

An Active Vibration Absorber assembly (20) including a casing (24), a first tuning mass (32) supported relative to the casing (24) which is actively vibratable by a force generator (40) in a first direction (along an A--A axis), a second tuning mass (32') supported relative to said casing (24) which

An Active Vibration Absorber assembly (20) including a casing (24), a first tuning mass (32) supported relative to the casing (24) which is actively vibratable by a force generator (40) in a first direction (along an A--A axis), a second tuning mass (32') supported relative to said casing (24) which is actively vibratable by a force generator (40') in a second direction (along axis B--B) generally orthogonal to the first direction, and a flexible member (26) flexibly supporting the casing (24). In a first embodiment, the tuning masses (32, 32') are vibratable by a magnet and coil assembly within shakers (25, 25') and the flexible member (26) is a beam. In other embodiments, multiple beams are employed to restrict the vibration of casing (24) to substantially planar motion. The AVA assembly (20) finds application in Active Structural Control (ASC) systems for actively canceling vibration or noise in vehicle cabins (example: automobiles, aircraft).

대표청구항 ▼

[ I claim:] [1.] An active vibration absorber assembly for use with a base, said active vibration absorber comprising:(a) a casing providing a primary tuning mass, said casing including a first housing and a second housing,(b) a first tuning mass flexibly supported relative to said first housing,(c)

[ I claim:] [1.] An active vibration absorber assembly for use with a base, said active vibration absorber comprising:(a) a casing providing a primary tuning mass, said casing including a first housing and a second housing,(b) a first tuning mass flexibly supported relative to said first housing,(c) a first active force generator which is actively vibratable to vibrate said first tuning mass in a first direction,(d) a second tuning mass flexibly supported relative to said second housing,(e) a second active force generator which is actively vibratable to vibrate said second tuning mass in a second direction which is generally orthogonal to said first direction, and(f) a flexible member adapted to flexibly suspend said casing from the base such that vibration of said casing is constrained substantially solely by said flexible member,(g) wherein said first and second housings are rigidly connected.