Permanent magnet and electromagnetic composite active and passive vibration isolation system
An electromagnetic composite and vibration isolation system technology, which is applied in the directions of magnetic spring, vibration suppression adjustment, non-rotational vibration suppression, etc., can solve problems such as reducing the normal service life, restricting the accuracy and performance of weapons and equipment, and affecting the reliability of weapons and equipment
Pending Publication Date: 2022-06-24
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
[0003] Vibration runs through the entire life cycle of weapons and equipment, and is a key bottleneck restricting the accuracy and performance of weapons and equipment. At the same time, vibration will seriously affect the reliability of weapons and equipment and reduce the normal service life
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[0018] The core of the invention is to provide a permanent magnet electromagnetic composite active and passive vibration isolation system, which can effectively reduce the overall stiffness of the system, reduce the natural frequency of the system, and actively adjust the stiffness and damping of the system. .
[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] An example of a permanent magnet electromagnetic composite active and passive vibration isolation system provided by ...
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Abstract
The invention belongs to the technical field of vibration isolation equipment, and discloses a permanent magnet and electromagnetic composite active and passive vibration isolation system which comprises a bottom plate, a spring fixed to the bottom plate and a bearing table fixed to the upper portion of the spring. The electromagnet is fixed to the bottom plate, the permanent magnet is fixed to the top end of the electromagnet, the armature is fixed to the bottom face of the bearing table and is opposite to the permanent magnet in a spaced mode, the spring serves as a passive vibration isolation device, and static supporting force is provided for a vibration-isolated object by pre-compressing the spring; the permanent magnet and the electromagnet jointly form a permanent magnet and electromagnetic hybrid actuator and serve as an active vibration isolation device, the permanent magnet is a negative stiffness element, and the electromagnet is used for actively adjusting the stiffness and damping of the whole system by changing the magnitude and direction of voltage and current. According to the permanent magnet and electromagnetic composite active and passive vibration isolation system, the overall rigidity of the system can be effectively reduced, the inherent frequency of the system is reduced, and meanwhile the rigidity and damping of the system can be actively adjusted.
Description
technical field [0001] The invention belongs to the technical field of vibration isolation equipment, in particular to a permanent magnet electromagnetic composite active and passive vibration isolation system. Background technique [0002] Vibration isolation system is the most widely used vibration control technology in vibration control. It is divided into passive vibration isolation, active vibration isolation and active-passive hybrid vibration isolation. Among them, passive vibration isolation system is to add passive elements, such as springs, to the vibration propagation path. , rubber and air springs, etc., to reduce the vibration intensity transmitted to the receiving structure, its structure is simple, easy to implement, reliable, and does not need to consume additional energy, and with the development of technology, the bearing capacity of the structure and There are higher requirements for vibration control accuracy. At present, large-scale, low-rigidity and fle...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16F6/00F16F15/00F16F15/03F16F15/067
CPCF16F6/00F16F15/005F16F15/03F16F15/067
Inventor 翟明达李晓龙龙志强张博王志强
Owner NAT UNIV OF DEFENSE TECH