The disclosure relates to an active vibration absorption system for absorbing the vibrations of a vibrating element. The vibration absorption system comprises a structure-borne sound exciter having a coupling element for coupling to the vibrating element and having an electrical coil for moving the coupling element by means of a coil current. The structure-borne sound exciter is designed to provide a measurement signal correlated with a detected induced voltage. Furthermore, the vibration absorption system comprises a control device, which is designed to identify a target current intensity of the coil current in accordance with the measurement signal and to control an actual current intensity of the coil current to the target current intensity. The target current intensity is designed to adjust the motion of the coupling element in such a way that the vibrations of the element are at least partly absorbed. Moreover, the control device is designed to identify a detection component and a control component from the measurement signal and to identify the target current intensity in accordance with the detection component.

A handlebar for a motor vehicle, in particular a motorcycle or a motorcycle-type vehicle, has a vibration damping mechanism designed to dampen a first vibration of the handlebar. The vibration damping mechanism is designed to detect the first vibration and is equipped with at least one actuator which is effectively coupled to the handlebar in a vibration-transmitting manner and which, in response to the detected first vibration, can be actuated to introduce a second vibration into the handlebar.

A vibration damping device which is able to damp vibration of a rotating body in a high-speed range and to certainly accelerate the rotating body to the high-speed range is provided.

A vibration damping device 1 damping vibration of a rotating body 100 includes an automatic balancer 2 which is configured to cancel out imbalance of the rotating body 100 when the rotating body rotates 100; a liquid damper 4 which is coaxially rotatable with the rotating body 100 and includes a collision member 23 provided in a casing 20 in which liquid 22 is sealed, the liquid colliding with the collision member 23 when the liquid 22 moves in a circumferential direction; and a relative rotation unit 5 which is configured to cause the liquid damper 4 to rotate relative to the rotating body 100.

An apparatus and method for damping haptic vibrations. A haptic output device is positioned within a device housing. The haptic output device has a haptic actuator and a haptic mass, the haptic mass being movable relative to the housing. A damper is positioned within the device housing. A controller is programmed to generate and deliver a haptic signal to the haptic actuator at a first time, and to generate and deliver a damping signal to the damper at a second time, the second time occurring after the first time. The method comprises moving a haptic mass, the haptic mass position in a housing; vibrating the housing in response to moving the haptic mass; damping movement of the haptic mass after a period of time; and substantially eliminating vibration of the housing in response to damping movement of the haptic mass.

A drive system includes an actuator that is driven by a motor to generate displacement, a driver that drives the motor, and a controller that gives a control instruction to the driver. The controller includes a model creation unit that creates a physical model based on displacement caused by application of an external load to the actuator and an instruction generating unit that generates a control instruction such that the actuator generates displacement according to the physical model.

Disclosed is an active control Stewart vibration damping platform, including a load-bearing platform, a base, and six telescopic rods. Each telescopic rod includes a driving motor, a rotating shaft, a sleeve, and a moving rod. One end, away from the driving motor, of the rotating shaft is provided with a cylindrical cavity, one end of the moving rod penetrates through the cylindrical cavity, and the sleeve is sleeved outside the rotating shaft. The rotating shaft is in running fit with the sleeve through a first bearing, and the moving rod is in sliding fit with the sleeve through a second bearing. The moving rod and the rotating shaft are respectively provided with a spiral permanent magnet. The spiral permanent magnet on the rotating shaft can drive the moving rod to move in an axial direction of the rotating shaft through the spiral permanent magnet on the moving rod when rotating.

The invention relates to a method for operating a centrifugal device. The invention furthermore relates to a centrifugal device. The centrifugal device is provided with a drum which can be driven at a variable speed of rotation, with a frame and with vibration dampers arranged between the frame and the drum. The invention furthermore relates to a computer program product.

As mobile computing devices are increasingly expected to be smaller, thinner, and/or lighter, less space is available for incorporating such structurally stiff perimeter components, as well as energy-absorbing components. The electroactive perimeter stiffening devices, systems, and methods described herein detect a free-fall event or condition, anticipate a subsequent impact event, and actively stiffen one or more electroactive perimeter stiffeners of an associated mobile computing device in preparation for the impact event. The electroactive perimeter stiffeners direct impact energy away from, and in some cases, distribute and/or dissipate the impact energy, in an effort to prevent damage to impact-sensitive components of the mobile computing device.

An optical system configured to counteract vibrations due to a munitions launch includes a cylindrical optical lens stack. The system also includes an accelerometer attached to the lens stack and connected to a control system and power supply. The system further includes a mechanical actuator attached to the lens stack and connected to a control system and power supply. The mechanical actuator is a piezoelectric actuator.

A vehicle anti-vibration device includes a vibration sensor programmed to detect vibrations and output a vibration signal representing the vibrations detected. The device further includes a motor that vibrates in accordance with a vibration dampening signal, a communication interface programmed to wirelessly transmit the vibration signal to a remote device, and a processor programmed to process the vibration signal and generate the vibration dampening signal to dampen the vibrations detected.