A coil-integrated magneto-rheological elastomer includes: an elastomer substrate having a predetermined shape and including a magnetic powder; and a coil disposed inside the elastomer substrate. Such a coil-integrated magneto-rheological elastomer can exhibit improved magnetic properties due to the coil embedded in the elastomer substrate.

The disclosure provides a magnetic suspension type quasi-zero stiffness electromagnetic vibration isolator with active negative stiffness. The disclosure relates to the technical field of vibration control. The disclosure can selectively realize passive negative stiffness and active negative stiffness by adjusting the control mode of a controller. By adopting an amplifying mechanism and DIESOLE type electromagnets, the bearing capacity of the vibration isolator is further increased, and the disclosure is suitable for the field of ultra-low frequency heavy load vibration reduction and isolation. The displacement state of a negative stiffness mechanism can be measured in real time according to a sensor, and by means of cooperation of the controller and a driver, active negative stiffness is realized, real-time linear negative stiffness is realized, the multi-stable phenomenon is avoided, and complex dynamic phenomena such as jumping during working of the vibration isolator are prevented. The active negative stiffness is realized, the current passing through the system can be adjusted according to different working conditions, and the system has strong self-adaptive ability, can be applied to vibration-isolated objects of different quality, and can adapt to different working environments.

Provided is a damper mount (1, 101, 201) configured to be interposed between a damper (11) of a wheel suspension device and a vehicle body (9). The damper mount includes: an annular outer member (22) fixed to the vehicle body; an annular inner member (21) fixed to the damper, one of the outer member and the inner member being received in another of the outer member and the inner member; a first magneto-elastic member (24) radially interposed between the inner member and the outer member; and a coil (25) configured to apply a magnetic flux to the first magneto-elastic member.

An engine mount control apparatus that is an active noise vibration control apparatus according to the present disclosure is characterized by being provided with a housing that has an outer core, an inner core that is disposed inside the outer core, and an electromagnetic coil that is positioned between the outer core and the inner core and by a portion between the outer core and the inner core being filled with a magneto-rheological elastomer containing magnetic particles. The present disclosure enables the maintenance of good static load support performance.

A vehicle powertrain proactive damping system includes a plurality of proactive damping structures mounted on a powertrain structure with each proactive damping structure includes a magneto rheological elastomer (MRE). An electromagnet is associated with each proactive damping structure. A control unit includes a processor circuit. A sensor obtains vibration data regarding the powertrain structure. A LIDAR sensor is mounted on the vehicle and is electrically connected with the control unit. The LIDAR sensor provides data to the control unit indicative of upcoming road surface conditions to be experienced by the vehicle. Based on data from at the sensor and the LIDAR sensor, the processor circuit is constructed and arranged to control voltage to the electromagnets to selectively adjust a rigidity of the associated proactive damping structure so as to control vibrational effects on the powertrain structure.

When forces are input to a mount in a plurality of directions, an ECU changes the magnitude of a coil excitation current to change the strength of a magnetic field. At this moment, the elastic force of the mount can be changed in directions in response to the plurality of directions in which the forces are input using a plurality of magnetorheological elastomers (a brim-shaped MRE portion and a cylindrical MRE portion) in which magnetic particles are arranged in different manners.

A variable stiffness bushing assembly includes an inner tubular member, an outer tubular member coaxially surrounding the inner tubular member, and an elastic member connecting the inner and outer tubular members. The elastic member defines a pair of first liquid chambers that are on opposite sides of an axial line of the inner tubular member and communicate with each other via a first circumferentially extending communication passage defined between one of the outer yokes and the annular large diameter portion, and a pair of second liquid chambers that are on opposite sides of the axial line and communicate with each other via a second circumferentially extending communication passage defined between another one of the outer yokes and the annular large diameter portion. The magnetic fields generated by the two coils are selectively applied to a magnetic fluid flowing through the first communication passage and the second communication passage.

Provided is a damper mount (1, 101, 201) configured to be interposed between a damper (11) of a wheel suspension device and a vehicle body (9). The damper mount includes: an annular outer member (22) fixed to the vehicle body; an annular inner member (21) fixed to the damper, one of the outer member and the inner member being received in another of the outer member and the inner member; a first magneto-elastic member (24) radially interposed between the inner member and the outer member; and a coil (25) configured to apply a magnetic flux to the first magneto-elastic member.

An active vibration control device includes: a housing; a movable part including at least one movable mass member; an exciting coil that generates a magnetic field with an intensity corresponding to a current supplied to the exciting coil; a magnetic viscoelastic elastomeric member whose viscoelastic property changes in accordance with a magnitude of the magnetic field generated by the exciting coil; and a support member made of a non-magnetic material. The housing and the movable part are elastically connected with each other by both the magnetic viscoelastic elastomeric member and the support member.

Provided are a non-aqueous suspension exhibiting an electrorheological effect and a damper constructed using the non-aqueous suspension.

A non-aqueous suspension exhibiting an electrorheological effect, including a non-aqueous liquid; and organic polymer particles dispersed in the non-aqueous liquid, wherein the organic polymer particles have at least one type of ion in the inside or on the surface of the organic polymer particles, wherein when a 5 kV/mm voltage is applied between a pair of electrodes, the logarithmic value of frequency factor in Arrhenius equation for the current density (A/cm.sup.2) flowing between the electrodes through the non-aqueous suspension is 20 or more.