Provided are a vibration-suppressing mechanism that has excellent maintainability and can effectively control vibration of a column, and a charged particle beam device using the same. This charged particle beam device comprises: a sample chamber for accommodating a sample that will serve as an object to be observed therein; a column that is disposed on an upper portion of the sample chamber and irradiates and scans the sample with a charged particle beam generated by a charged particle source; and a vibration-suppressing mechanism that is removably provided to the column, said particle beam device being characterized in that the vibration-suppressing mechanism includes a stator affixed to the column, an annular mover that is supported so as to be movable in a direction orthogonal to the axial direction of the column, a plurality of actuators that cause the mover to vibrate in the direction orthogonal to the axial direction of the column, a plurality of vibration sensors affixed to the stator, and a controller that controls the actuators according to output signals from the vibration sensors.

Disclosed is a self-powered vibration damper based on piezoelectricity and a control method. The damper comprises a loading platform, an energy collecting mechanism, a curved leaf spring, a vibration control mechanism and a substrate all connected in sequence, the circuit system comprises a rectifier circuit, a DC-DC voltage conversion circuit, an energy storage circuit, a control circuit and a charging battery, a first piezoelectric stack is connected with the input end of the rectifier circuit, the output end of the rectifier circuit is connected with the input end of the DC-DC voltage conversion circuit, the output end of the DC-DC voltage conversion circuit is connected with the input ends of the energy storage circuit and the charging battery, the output end of the energy storage circuit is connected with the input end of the control circuit, the output end of the control circuit is connected with the second piezoelectric stack.

A highly-efficient new-energy vibration controller integrating passive, semi-active and active control, including a multi-cavity beam, a battery assembly, a wound magnetic device, a damping piezoelectric device and an inertia mass assembly. The wound magnetic device includes a connecting rod, an electromagnetic wire wound on a bottom end of the connecting rod and a magnetic box arranged at a bottom of the inertia mass assembly. A top end of the connecting rod is fixedly connected to a bottom of the multi-cavity beam. The bottom end of the connecting rod passes through a center through hole of the inertia mass assembly and arranged in the magnetic box. The magnetic box is provided with a magnetic field. The damping piezoelectric device is sleevedly arranged on an outer wall of the connecting rod. The damping piezoelectric device and the wound magnetic device are both electrically connected to the battery assembly.

Provided is a sound reduction or vibration damping apparatus that has a new sound control principle where the sound control principle is totally different from a known passive or active sound control apparatus. A sound reduction or vibration damping apparatus 1 includes a mass portion 11, spring portions 12a and 12b placed between the mass portion 11 and a structural member 13, and a control unit 4 for causing the spring constants of the spring portions 12a and 12b to continue changing. The sound reduction or vibration damping apparatus 1 is mounted on the structural member 13 to reduce sound passing through the structural member 13 or sound generated from the structural member, or damp the vibration of the structural member 13.

A microelectromechanical membrane transducer includes: a supporting structure; a cavity formed in the supporting structure; a membrane coupled to the supporting structure so as to cover the cavity on one side; a cantilever damper, which is fixed to the supporting structure around the perimeter of the membrane and extends towards the inside of the membrane at a distance from the membrane; and a damper piezoelectric actuator set on the cantilever damper and configured so as to bend the cantilever damper towards the membrane in response to an electrical actuation signal.

The present disclosure discloses a piezoelectric self-powered combination beam vibration damper and a control method thereof. An upper guiding component is installed inside an upper rigid frame, a lower guiding component is installed inside a lower rigid component, a guide rod is nested inside the upper guiding component and the lower guiding component, an upper elastic component is sleeved outside the upper idler wheel mechanism, a lower elastic component is sleeved outside the lower idler wheel mechanism, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end of each piezoelectric cantilever beam is arranged between the upper idler wheel mechanism and the lower idler wheel mechanism, at least one piezoelectric cantilever beam is connected with the input end of a circuit system, and other piezoelectric cantilever beams are connected with the output end of the circuit system.

The present application provides a power generator, a suspension, a vehicle, an apparatus and a method for producing a power generator. Among them, the power generator comprises a cylinder body, a moving member, and a piezoelectric conversion unit. The moving member and the cylinder body jointly defines a variable cavity. The piezoelectric conversion unit is located in the variable cavity, and the piezoelectric conversion unit is configured to deform when the moving member is in relative motion with respect to the cylinder body move and changes the size of the variable cavity, for generating electric energy. Due to the fact that the piezoelectric conversion unit is arranged in the variable cavity, the moving member is in relative motion with respect to the cylinder body to make the piezoelectric conversion unit generate electric energy, thus effectively utilizing the energy generated by the target members in the vibration process.

The present application provides a power generator, a suspension, a vehicle, an apparatus and a method for producing a power generator. Among them, the power generator comprises a cylinder body, a moving member, and a piezoelectric conversion unit. The moving member and the cylinder body jointly defines a variable cavity. The piezoelectric conversion unit is located in the variable cavity, and the piezoelectric conversion unit is configured to deform when the moving member is in relative motion with respect to the cylinder body move and changes the size of the variable cavity, for generating electric energy. Due to the fact that the piezoelectric conversion unit is arranged in the variable cavity, the moving member is in relative motion with respect to the cylinder body to make the piezoelectric conversion unit generate electric energy, thus effectively utilizing the energy generated by the target members in the vibration process.

Self-adaptive systems, uses of the systems, and methods for adapting one or more properties of a material are disclosed.

A microelectromechanical membrane transducer includes: a supporting structure; a cavity formed in the supporting structure; a membrane coupled to the supporting structure so as to cover the cavity on one side; a cantilever damper, which is fixed to the supporting structure around the perimeter of the membrane and extends towards the inside of the membrane at a distance from the membrane; and a damper piezoelectric actuator set on the cantilever damper and configured so as to bend the cantilever damper towards the membrane in response to an electrical actuation signal.