Method and system for determining damping force of a magneto-rheological shock absorber
A technology of magnetorheological shock absorber and determination method, which is applied to shock absorbers, shock absorbers, biological systems, etc., can solve the problems of low accuracy of damping force, etc., so as to improve estimation accuracy, improve fitting accuracy, The effect of reducing calculation errors
Active Publication Date: 2021-03-02
TSINGHUA UNIV +1
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[0004] The purpose of the present invention is to provide a method and system for determining the damping force of a magneto-rheological shock absorber, so as to solve the problem of low accuracy of the damping force estimated by the existing damping force estimation method
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[0056]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with 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, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0057]The purpose of the present invention is to provide a method and system for determining the damping force of a magnetorheological shock absorber, which can improve the estimation accuracy of the damping force.
[0058]In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawin...
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The invention relates to a method and system for determining the damping force of a magneto-rheological shock absorber. The method includes: constructing a liquid flow dynamics analysis model, and obtaining the set structural size parameters of the magneto-rheological shock absorber; obtaining the viscosity of the magnetorheological fluid and the yield stress under magnetic field induction; determining the The area flow rate of magnetorheological fluid; determine the dimensionless yield stress according to the area flow rate; determine the fitting slope between the dimensionless yield stress and the dimensionless pressure gradient; determine the pressure difference in the sensing channel according to the fitting slope and the gap length of the sensing area ; Determine the pressure difference in the non-induction channel according to the viscosity, the structure parameters of the gap in the non-induction area and the area flow rate; determine the damping force of the magneto-rheological shock absorber according to the pressure difference in the induction channel and the pressure difference in the non-induction channel; The damping force of the MR shock absorber is used to design the MR shock absorber. Using the determination method and system can improve the estimation accuracy of the damping force.
Description
Technical field[0001]The invention relates to the field of determining the damping force of a magnetorheological shock absorber, in particular to a method and system for determining the damping force of a magnetorheological shock absorber.Background technique[0002]Shock absorber or damper is an indispensable device in vibration reduction system or vibration isolation system. Once the damping force of the traditional shock absorber is designed and finalized, it cannot be adjusted according to the vibration condition of the system or the excitation conditions. It is difficult for the damping system to maintain stable performance under variable or random conditions; advanced damping system is equipped The shock absorber with adjustable damping force can improve the damping performance of the system and improve the adaptability of the system to different working conditions. Among them, the magnetorheological shock absorber uses the viscosity change of the magnetorheological fluid under ...
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IPC IPC(8): G06F30/28G06F30/17F16F9/53G06F113/08G16B5/00
CPCF16F9/535F16F2224/045G06F30/17G06F30/28G06F2113/08G06F2119/14
Inventor 彭志召危银涛张进秋
Owner TSINGHUA UNIV