A Strong Nonlinear Vibration Absorber with Variable Stiffness
A nonlinear vibration absorber and variable stiffness technology, which is applied in the field of vibration reduction, can solve the problems of vibration absorber application limitation, high space and high cost, and increase the quality of the original system, and achieves the effect of improving robustness and light weight.
Active Publication Date: 2018-06-08
TIANJIN UNIVERSITY OF TECHNOLOGY
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Traditional passive linear / weak nonlinear dampers tend to have a large mass and can only achieve narrow-band vibration reduction, while semi-active linear / weak nonlinear dampers require strong frequency tracking capabilities and a single damper can only track One frequency; active shock absorbers require additional energy supply devices and controllers, greatly increasing the mass of the original system, taking up too much space and high cost; the application of these shock absorbers in the aerospace field is greatly limited
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments in no way limit the present invention.
[0018] Such as Figure 1-3 As shown, the strong nonlinear shock absorber that can realize variable stiffness includes a support part, a transmission part, a vibration damping part and a control part;
[0019] The support part includes a connecting seat 1, two hinge seats 3, and guide rails 4; the connecting seat 1 is detachably fixed on the system that needs to be damped; Knotted on the bottom surface of the connecting seat 1, the lower part of the hinge seat 3 is in the shape of an inverted groove, and two through holes of equal height are formed on the two side walls of the inverted groove; the upper end of the guide rail 4 is vertically fixed on the connecting seat 1 middle of the bottom surface;
[0020] The transmission part includes two gears 9, two rotating arms 8 and...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a strong nonlinear vibration absorber capable of achieving variable stiffness. The vibration absorber comprises a support part, a transmission part, a vibration attenuation part and a control part. The control part comprises a connection seat, two hinge seats and a guide rail. The transmission part comprises two gears, two rotation arms and two connection shafts. The vibration attenuation part comprises two linear springs and a quality block. The control part comprises a motor, a microcontroller and an acceleration speed sensor. According to the invention, the vibration absorber is light, capable of achieving full spectrum band vibration attenuation, and has ability to adjusting the stiffness so as to be adaptive to change of the size of the exciting force, and robustness is greatly improved.
Description
technical field [0001] The invention belongs to the technical field of vibration reduction, in particular to a strong nonlinear vibration absorber capable of realizing variable stiffness. Background technique [0002] In the field of aerospace, the loads borne by aircraft are relatively complex, often containing multiple frequency components, and their amplitudes are constantly changing; in addition, the requirements for lightweight aircraft also have restrictions on the mass of shock absorbers. Traditional passive linear / weak nonlinear dampers tend to have a large mass and can only achieve narrow-band vibration reduction, while semi-active linear / weak nonlinear dampers require strong frequency tracking capabilities and a single damper can only track One frequency; active shock absorbers require additional energy supply devices and controllers, greatly increasing the quality of the original system, taking up too much space and high cost; the application of these shock absorb...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05D19/02
CPCG05D19/02
Inventor 陈建恩钟锐葛为民刘军王肖锋
Owner TIANJIN UNIVERSITY OF TECHNOLOGY