Initiative electromagnetic control system for slab and girder structure vibration

Abstract

The invention discloses an initiative electromagnetic control system for slab and girder structure vibration. The initiative electromagnetic control system comprises a mechanical portion and a control portion. The mechanical portion comprises a wall made of nonferromagnetic materials, a slab and girder structure and electromagnets. One end of the slab and girder structure is connected with the wall, a displacement sensor is arranged on the slab and girder structure, and the electromagnets include electromagnets A, B, C and D. The control portion comprises a computer, a power amplifier and a full-wave rectification circuit without a filter. The computer is connected with the displacement sensor, an input end of the power amplifier is connected with the computer, one path of an output end of the amplifier is connected with the electromagnets A and D through a bridge rectification circuit without a filter while the other path of the same is directly connected with the electromagnets B and C. When the slab and girder structure vibrates, magnetic pole polarity and magnetic field intensity of the electromagnets can be automatically changed to attenuate the vibration quickly, so that damages to a mechanical system caused by vibration are reduced.

Description

Technical field

[0001] The invention relates to the technical field of mechanical vibration and noise control, in particular to an active electromagnetic control system for plate-beam structural vibration. Background technique

[0002] When any mechanical system is dynamically excited or disturbed, it will respond, manifested as structural vibration and noise, which will not only reduce the performance of the mechanical system, but also endanger human health. With the development of aerospace, precision machinery, micro and nanotechnology, etc. With the development of the field, the suppression of structural vibration has become an important research topic in the design of various systems. However, most of the existing technologies use additional damping and piezoelectric smart structures for control, which have the following shortcomings:

[0003] 1) As the operating load and operating conditions of the equipment often change, the severity of the vibration caused is also changing...

Examples

Embodiment Construction

[0043] Combine below Figure 1 to Figure 1 2 and Examples further illustrate the present invention.

[0044] An active electromagnetic control system for plate-beam structural vibration, combining Figure 1 to Figure 1 2c. The system includes a mechanical part and a control part. The mechanical part includes a wall made of non-ferromagnetic materials, a plate beam structure 4, and an electromagnet 2. One end of the plate beam structure 4 is connected to the wall 1, and the plate The beam structure 4 is provided with a displacement sensor 5. The electromagnet 2 includes electromagnet A, electromagnet B, electromagnet C, and electromagnet D, wherein electromagnet A and electromagnet C are arranged in the wall 1. B. The electromagnet D is arranged on both sides of the plate beam structure 4. The coil winding directions of the electromagnet A, the electromagnet B, and the electromagnet D are the same. The coil winding direction of the electromagnet C is the same as that of the electro...

Technical field

[0001] The invention relates to the technical field of mechanical vibration and noise control, in particular to an active electromagnetic control system for plate-beam structural vibration. Background technique

[0002] When any mechanical system is dynamically excited or disturbed, it will respond, manifested as structural vibration and noise, which will not only reduce the performance of the mechanical system, but also endanger human health. With the development of aerospace, precision machinery, micro and nanotechnology, etc. With the development of the field, the suppression of structural vibration has become an important research topic in the design of various systems. However, most of the existing technologies use additional damping and piezoelectric smart structures for control, which have the following shortcomings:

[0003] 1) As the operating load and operating conditions of the equipment often change, the severity of the vibration caused is also changing...

Examples

Embodiment Construction

[0043] Combine below Figure 1 to Figure 1 2 and Examples further illustrate the present invention.

[0044] An active electromagnetic control system for plate-beam structural vibration, combining Figure 1 to Figure 1 2c. The system includes a mechanical part and a control part. The mechanical part includes a wall made of non-ferromagnetic materials, a plate beam structure 4, and an electromagnet 2. One end of the plate beam structure 4 is connected to the wall 1, and the plate The beam structure 4 is provided with a displacement sensor 5. The electromagnet 2 includes electromagnet A, electromagnet B, electromagnet C, and electromagnet D, wherein electromagnet A and electromagnet C are arranged in the wall 1. B. The electromagnet D is arranged on both sides of the plate beam structure 4. The coil winding directions of the electromagnet A, the electromagnet B, and the electromagnet D are the same. The coil winding direction of the electromagnet C is the same as that of the electro...

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