1results about How to "Achieve dislocation" patented technology

This invention relates to the field of vibration control technology, and more particularly to a cable multimodal control device and method based on a passive adjustable stiffness-damper. The device includes a mechanical damper and an adjustable equivalent stiffness device. The adjustable equivalent stiffness device comprises a preloaded spring-type negative stiffness mechanism, a lever-type positive stiffness mechanism, and a power mechanism. The lever-type positive stiffness mechanism changes the equivalent stiffness generated by the series connection of the preloaded spring-type negative stiffness mechanism and the lever-type positive stiffness mechanism by changing the lever ratio. The power mechanism is installed between the cable and the ground to sense the cable's vibration, generate relative motion with it, and drive the lever-type positive stiffness mechanism, thereby changing the lever ratio of the lever-type positive stiffness mechanism. Through a purely mechanical structure, this invention provides a novel solution for multimodal control of cables targeting nodal modes, with a wide range of applications. Compared to existing active / semi-active methods that change the dynamic parameters of the damper, it eliminates the need for external power supply.