A balancing system for a rotating member is presented. The rotating member includes a hollow portion and an axis of rotation which extends through the hollow portion. The balancing system includes a vessel that is insertable into the hollow portion of the rotating member. The vessel includes an outer shell which is shaped to conform to inner walls of the hollow portion. A plurality of solid balancing beads partially fill the vessel. When the vessel is inserted into hollow portion and the rotating member is rotating, the axis of rotation passes through the vessel and the balancing beads are centrifugally positioned within the vessel to compensate for imbalance in the rotating member.

A tire inflation system and method for a tire supported by a wheel, the tire inflation system including a pump system including a pump cavity configured to fluidly connect to the tire, an actuating element configured to actuate relative the pump cavity, a drive mechanism rotatably coupled to the wheel, the drive mechanism including a motion transformer and an eccentric mass, a valve fluidly connecting the pump cavity to a fluid reservoir; and a control system configured to operate the valve.

A vibration attenuator for a rotor of an aircraft has a housing adapted for rotation with the rotor about an axis. A first ring is rotatably carried within the housing on a first bearing, a first weight being coupled to the first ring for rotation therewith relative to the housing about the axis. A second ring is rotatably carried by the first ring on a second bearing, a second weight being coupled to the second ring for rotation therewith relative to the housing and to the first ring. A first motor is configured for rotating the first ring relative to the housing, and a second motor is configured for rotating the second ring relative to the housing and to the first ring. The first and second motors are operated to rotate the weights within the housing and position the weights relative to each other for attenuating vibrations.

Systems and methods are provided for active vibration damping. One embodiment is a method for damping vibration in a mechanical system. The method includes detecting a vibration at a coupling of the mechanical system, generating a countervibration based on the detected vibration, and operating the mechanical system while generating the countervibration.

Methods and systems are provided for a variable inertia flywheel. In one example, a method adjusting mass bodies of two or more inertia plates of the variable inertia flywheel to generate a plurality of moments of inertia.

A vibration reduction device includes a support plate, one side mass positioned at an edge of one side surface of the support plate, the other side mass disposed to be opposite to one side mass and positioned at an edge of the other side surface of the support plate, and an impact absorbing member coupled to the support plate and configured to come into contact with one side mass or the other side mass.

A balancing system for a rotating member is presented. The rotating member includes a hollow portion and an axis of rotation which extends through the hollow portion. The balancing system includes a vessel that is insertable into the hollow portion of the rotating member. The vessel includes an outer shell which is shaped to conform to inner walls of the hollow portion. A plurality of solid balancing beads partially fill the vessel. When the vessel is inserted into hollow portion and the rotating member is rotating, the axis of rotation passes through the vessel and the balancing beads are centrifugally positioned within the vessel to compensate for imbalance in the rotating member.

A craft damper (torsion damper) includes a crankshaft (shaft member) to be input with a torsion vibration, a disc member coaxially attached to the crankshaft, a ring-shaped inertia mass body connected to an outer peripheral side of the disc member via a magneto-rheological elastomer member so as to be coaxial with the crankshaft, and an electromagnetic coil for applying a magnetic field to the magneto-rheological elastomer member.

The invention relates to a vibration damping system for a motor vehicle transmission, comprising: a support member (1) capable of being driven rotationally around an axis X and having a plurality of outer raceways (16); and a plurality of pendulum flyweights (2) distributed circumferentially around the axis X; each of the pendulum flyweights (2) being mounted oscillatingly with respect to the support member (1) by means of two rolling bodies (12, 13) that interact respectively with one and the other of the two inner raceways (14, 15) of the pendulum flyweight (2) and each interact with one of the outer raceways (16) of the support member (1), the outer raceways (16) being juxtaposed one after another continuously around the axis X, so that the rolling bodies (12, 13) are each capable of passing freely from a first outer raceway (16) to a second outer raceway (16).

A tire inflation system and method for a tire supported by a wheel, the tire inflation system including a pump system including a pump cavity configured to fluidly connect to the tire, an actuating element configured to actuate relative the pump cavity, a drive mechanism rotatably coupled to the wheel, the drive mechanism including a motion transformer and an eccentric mass, a valve fluidly connecting the pump cavity to a fluid reservoir; and a control system configured to operate the valve.