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公开(公告)号：US10527124B2
公开(公告)日：2020-01-07
申请号：US15989200
申请日：2018-05-25
发明人： Dongxu Li , Changping Yin , Dong Hao , Wang Liu
摘要： A non-limit multi-function viscoelastic support structure group, relating to a field of aerospace structural design, includes a basic structure, a supported structure and multiple viscoelastic support structure units. The multiple viscoelastic support structure units form a circular discontinuous group and are arranged between the basic structure and the supported structure. The viscoelastic support structure units are connected with the basic structure and the supported structure respectively in ways of pre-pressing and surface contact, and no fixed constrained relationship exists. The present invention absorbs a vibration energy through a viscoelastic effect of own structural material and forms a spring-oscillator vibration attenuation system with the supported structure. With a geometric topology boundary change of the structure group, the supported structure is allowed to have a relative motion, thereby consuming the external vibration energy through converting into a kinetic energy of an oscillator, which effectively improves a mechanical environment of the supported structure.
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公开(公告)号：US10473889B2
公开(公告)日：2019-11-12
申请号：US15680974
申请日：2017-08-18
发明人： Dongxu Li , Shipeng Feng , Yi Zhou , Wang Liu , Jianping Jiang
摘要： An experimental system for laser beam measurement and steering control, and relates to the technical field of optical, mechanical and electronic integration experimental systems. It includes: a high-precision optical mirror, a piezoelectric micro-actuator, a vibration exciter, a signal collection subsystem, a laser emitter, a beam splitter mirror, a fast steering mirror, a mechanical vibration isolation air bearing table, an optical vibration isolation air bearing table, a data processing and analyzing subsystem, and data transmission lines and power supply lines between subsystems and components. It uses a deflection angle of the laser beam as a control variation, can not only precisely measure the deflection angle of the laser beam, but also inhibit vibration of the high-precision optical mirror by using the piezoelectric micro-actuator and directly adjust the steering of the emitted laser beam by using the fast steering mirror, thereby improving precision of beam steering control.
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公开(公告)号：US20190136941A1
公开(公告)日：2019-05-09
申请号：US15989200
申请日：2018-05-25
发明人： Dongxu Li , Changping Yin , Dong Hao , Wang Liu
摘要： A non-limit multi-function viscoelastic support structure group, relating to a field of aerospace structural design, includes a basic structure, a supported structure and multiple viscoelastic support structure units. The multiple viscoelastic support structure units form a circular discontinuous group and are arranged between the basic structure and the supported structure. The viscoelastic support structure units are connected with the basic structure and the supported structure respectively in ways of pre-pressing and surface contact, and no fixed constrained relationship exists. The present invention absorbs a vibration energy through a viscoelastic effect of own structural material and forms a spring-oscillator vibration attenuation system with the supported structure. With a geometric topology boundary change of the structure group, the supported structure is allowed to have a relative motion, thereby consuming the external vibration energy through converting into a kinetic energy of an oscillator, which effectively improves a mechanical environment of the supported structure.
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