An electromagnetic spring with adjustable stiffness
A stiffness, electromagnetic technology, applied in the direction of magnetic springs, springs, springs/shock absorbers, etc., to achieve the effect of breaking through the limitation of bearing capacity, being easy to control, and improving vibration isolation performance
Active Publication Date: 2019-11-26
SHANGHAI UNIV
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Problems solved by technology
However, most of the current negative stiffness components are non-linear, and the design needs to be carefully studied to meet the conditions of use
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] The object of the present invention is to provide an electromagnetic spring with adjustable stiffness, which has the characteristics of compact structure, fast response, easy control and good vibration isolation performance.
[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and spec...
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The invention discloses an electromagnetic spring with adjustable stiffness. The electromagnetic spring includes a central axis, an intermediate electromagnetic force control component and two end electromagnetic force control components. The two end electromagnetic force control components and the intermediate electromagnetic force control component are both sleeved on the central axis; through the intermediate electromagnetic force control component, The middle controllable power supply controls the electromagnetic force exerted by the middle coil on the annular magnet and the electromagnetic force at both ends of the control component controls the electromagnetic force exerted on the annular magnet by the two-end controllable power supply to adjust the stiffness of the electromagnetic spring. The adjustable stiffness electromagnetic spring disclosed by the present invention can form an adjustable negative stiffness, breaks through the limitation of spring load-bearing capacity on vibration isolation performance, has a compact structure, fast response, easy control, adjustable nonlinearity of stiffness, and good vibration isolation performance. specialty.
Description
technical field [0001] The invention relates to the technical field of vibration control, in particular to an electromagnetic spring with adjustable stiffness. Background technique [0002] As the stiffness element, the spring is the core component of the vibration system, and its performance directly determines the performance of vibration control. The adjustable stiffness element can change the natural frequency and damping rate of the system, which solves the problem that the adjustable damping is only effective for a specific frequency, and plays an irreplaceable role in semi-active vibration control. Reducing the stiffness of the spring can reduce the natural frequency of the system, thereby expanding the vibration isolation frequency band and improving the vibration isolation performance. However, the traditional adjustable stiffness components can only produce positive stiffness, and the lower limit of the stiffness is limited by the bearing capacity and cannot be to...
Claims
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IPC IPC(8): F16F6/00
CPCF16F6/00F16F2228/066F16F15/03
Inventor 蒲华燕元书进孙翊王敏罗均徐志彭艳谢少荣杨毅
Owner SHANGHAI UNIV