| 摘要 |
The invention relates to a vibration exciter having load compensation for dynamically exciting test specimens, comprising a base, an actuator, an armature, which can be moved in relation to the base in an excitation direction by means of the actuator and which is guided parallel to the excitation direction by means of a linear guiding means, and a pneumatic load-compensating means, which compensates the weight force at least of the armature and of the test specimen to be excited. The problem addressed by the invention is that of producing a high-quality sinusoidal excitation signal having little interference signal by minimizing the friction occurring in the load compensation process and other non-linearities. This problem is solved by means of a vibration exciter having load compensation, the linear guiding means of which vibration exciter has an air bearing and the load-compensating means of which vibration exciter also includes the linear guiding means. |
