Damping-rigidness-controllable double-freedom-degree vibration active control platform

A technology of active control and degrees of freedom, applied in non-rotational vibration suppression, counterweight and other directions, it can solve the problems of single control direction, inconvenient system damping and stiffness adjustment, etc., and achieve the effect of small vibration range and good linearity.

Active Publication Date: 2013-11-20
XI AN JIAOTONG UNIV
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Problems solved by technology

In the past, vibration control was mainly applied to some energy-dissipating materials and piezoelectric materials, and in most cases, oil damping and r

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  • Damping-rigidness-controllable double-freedom-degree vibration active control platform
  • Damping-rigidness-controllable double-freedom-degree vibration active control platform
  • Damping-rigidness-controllable double-freedom-degree vibration active control platform

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Example Embodiment

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like figure 1 As shown, the present invention is a dual-degree-of-freedom vibration active control platform with controllable damping stiffness, including a cross beam skeleton 2 and a square base 11 connected by a flexible hinge 10, and the cross beams of the cross beam skeleton 2 are distributed on the square base 11. In the diagonal direction of the cross beam frame 2, a structural column 1 is installed in the middle position of the cross beam frame 2, and a sensor 3 and an actuator 5 are respectively connected between the lower part of the diagonal top of the cross beam frame 2 and the square base 11, and four limit columns 6 They are respectively placed between the cross beams of the cross beam frame 2 and the square base 11 and are close to the symmetrical positions of the sensor 3 or the actuator 5. There is a preset gap b...

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Abstract

A damping-rigidness-controllable double-freedom-degree vibration active control platform comprises a cross-shaped beam frame and a square base which are connected through a flexible hinge. A cross-shaped beam of the cross-shaped beam frame is distributed in the diagonal directions of the square base. A structure column is arranged at the center of the cross-shaped beam frame. Sensors and actuators are connected between the lower portions of the diagonal top ends of the cross-shaped beam frame and the square base respectively. Four limiting columns are arranged between the cross-shaped beam of the cross-shaped beam frame and the square base respectively. Prearranged gaps are reserved between the limiting columns and the cross-shaped beam frame. Four balancing weights are fixed on the lower portion of the cross-shaped beam frame between the sensors or the actuators and the limiting columns respectively. Twisting limiting spring pieces are arranged at the symmetrical positions on the lower portion of the cross-shaped beam frame between the limiting columns and the flexible hinge. The electromagnetic type sensors and the electric-damping electric-rigidness actuators are used to achieve detecting of angular speed and actuating, the flexible hinge and the spring piece with changeable thickness are combined to achieve controllable damping and rigidness in a quantifying mode, and double-freedom-degree vibration active control in the x direction and the y direction of the structure is achieved.

Description

technical field [0001] The invention relates to a vibration control platform, in particular to a dual-degree-of-freedom vibration active control platform with controllable damping stiffness. Background technique [0002] Vibration control platforms are widely used in aerospace, civil structures and other fields to achieve vibration control and eliminate damage to structures. At present, vibration control platforms mainly include passive control platforms and active control platforms, but passive control has poor flexibility and poor adaptability to unexpected environments. Due to its strong adaptability and good control effect, the active control platform has become the focus of vibration control research. In the past, vibration control was mainly applied to some energy-dissipating materials and piezoelectric materials, and in most cases, oil damping and rubber damping were used as damping materials. It is inconvenient to control the damping and stiffness of the system, and...

Claims

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Application Information

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IPC IPC(8): F16F15/03F16F15/06F16F15/28
Inventor 苗维凯徐明龙翟崇朴安增勇吴成松杨克亚陈杰张舒文冯勃
Owner XI AN JIAOTONG UNIV
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