Self-adaption piezomagnetic magnetorheological damper
A magneto-rheological damper, self-adaptive technology, applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, etc., can solve problems such as unreliability and complex structure, and achieve cost reduction, avoid data collection, and avoid heat generation Effect
Active Publication Date: 2012-12-12
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0005] In order to solve the problem of unreliability of the existing magneto-rheological damper based on sensor and control power supply due to its complex structure, the present invention proposes an adaptive piezoelectric magneto-rheological damper
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[0021] The present invention provides an adaptive piezoelectric magneto-rheological damper, and the present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0022] The structure of the present invention is as figure 1 As shown, the middle section of the inner wall of the master cylinder 1 is provided with an annular permanent magnet 3 , and the two sides of the annular permanent magnet 3 are respectively provided with magnetically conductive rings 4 . The left magnetic block 51 , the right magnetic block 52 and the giant magnetostrictive rod 6 form a piston 18 , and a magnetorheological fluid flow channel 13 is left between the outer peripheral wall of the piston 18 and the inner peripheral wall of the magnetic ring 4 . The piston rod includes a master cylinder piston rod 9 and an auxiliary cylinder piston rod 10. One end of the master cylinder piston rod 9 is fixed to the left magnetic block 51 in the master cylinder 1...
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The invention belongs to a magnetorheological damper, and particularly relates to a self-adaption piezomagnetic magnetorheological damper. An annular permanent magnet is arranged in the middle section of the inner wall of a main cylinder, and magnetism guiding rings are respectively arranged on the two sides of the annular permanent magnet; a left magnetism guiding block and a right magnetism guiding block are respectively arranged at the left end and the right end of a giant magnetostictive rod; one end of a piston rod of the main cylinder passes through the left end of the main cylinder to be fixedly connected with the left magnetism guiding block, one end of a piston rod of an auxiliary cylinder passes through a spring to be connected with the right wall of the auxiliary cylinder; and magnetorheological fluid is fully filled in the main cylinder, and a magnetorheological fluid flowing channel is reserved between the outer circumferential wall of a piston and the inner circumferential walls of the magnetism guiding rings and the annular permanent magnets. According to the self-adaption piezomagnetic magnetorheological damper, a control power supply does not need to be configured additionally, the structure is simple, the problem of heat generated by a power supply coil can be avoided, and the self-adaption piezomagnetic magnetorheological damper can still work normally when a power supply is in failure caused by the earthquake, so that the safety of the device is improved; and the magnetic sensing strength in a magnetic return path can be changed by utilizing a piezomagnetic effect of the giant magnetostictive rod, the output force of the damper can be adjusted in a self-adaption manner, various sensors are omitted, a time-lag effect is reduced, and the effectiveness of a control system is improved.
Description
technical field [0001] The invention belongs to a magneto-rheological damper, in particular to an adaptive piezoelectric magneto-rheological damper. Background technique [0002] Vibration is a common physical phenomenon. With the continuous advancement of science and technology, vibration problems in building structures, transportation, machinery and other fields have attracted people's increasing attention. In order to effectively overcome and avoid various unfavorable vibrations, domestic and foreign scholars have successively proposed passive, active and semi-active vibration control systems. Semi-active control is currently the most cost-effective and most promising control technology in the field of structural vibration control. It perfectly combines the idea of active control with passive control strategies, saves control energy while implementing control, and at the same time achieves close to active control. effect, and the control process is stable and reliable....
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IPC IPC(8): F16F9/53
Inventor 徐龙河戚艳红李忠献
Owner BEIJING JIAOTONG UNIV