A Robust Method for Precise Acquisition of Lateral Vibration of Axially Moving Rope Equipment
A technology of axial movement and lateral vibration, applied in instruments, computing, electrical and digital data processing, etc., can solve problems such as failure to solve lateral vibration
Active Publication Date: 2018-11-20
HEFEI UNIV OF TECH
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Problems solved by technology
In the actual engineering application of axially moving rope equipment, traveling waves in different directions will reflect multiple times at the boundary of the finite-length moving rope, and superimpose with the incident wave to form the lateral vibration of the moving rope. The method does not solve the problem of accurate acquisition of lateral vibration formed by multiple reflections and superimpositions of traveling waves in finite-length moving rope equipment
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[0081] In this embodiment, the axially moving device is an axially moving rope device, and the motion condition of the rope device is a constant rope length. The robust method for accurately obtaining the lateral vibration of the axially moving device is as follows:
[0082] determining a motion model of the rope device, and obtaining a motion equation of the rope device;
[0083] Determine the initial conditions and boundary conditions of the motion of the rope equipment;
[0084] Determine the vibration period T of the rope device;
[0085] Since the traveling wave moves left and right within a vibration cycle of the rope device and reflects at the boundary, the vibration expression of the rope device changes. In order to accurately express the vibration of the rope device, the vibration period T is divided into three parts according to the movement law of the traveling wave in the rope device stages: respectively the first stage [0,t a ], the second stage [t a ,t b ], a...
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The invention discloses a robust method for accurately obtaining transverse vibration of an axial movement device. The method is characterized by comprising the steps of dividing a vibration period into three stages according to a traveling wave movement law in the rope device; obtaining boundary incident waves and boundary reflection waves of the rope device in the three stages in combination with the traveling wave movement law in the rope device and boundary conditions; and superposing the boundary incident waves and the boundary reflection waves to obtain transverse displacements of the rope device in the three stages. The method is suitable for various complex boundary conditions and various speed conditions of the rope movement device of which the movement condition is the constant rope length, the obtained vibration displacement response is accurate, and the need of checking the feasibility and effectiveness of various numerical calculation methods for transverse vibration of rope axial movement can be met.
Description
technical field [0001] The invention belongs to the field of mechanical system dynamics modeling and vibration control, and more specifically relates to a robust method for accurately obtaining the lateral vibration of a moving rope. Background technique [0002] Axially moving rope equipment has the advantages of efficient operation, strong self-adaptation, large bearing capacity, simple structure, flexible and controllable, etc., and has very important application value in many engineering fields, such as tethered satellite cables, power transmission belts, elevator cables, Passenger and cargo ropeways, etc. Noise and vibration accompanies the operation of these equipment, especially lateral vibration has a great impact on the function and safety of these equipment. The problem of lateral vibration of axially moving rope installations is a challenging subject that has been studied for many years and is still widely concerned today. The traditional research technology is ...
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IPC IPC(8): G06F17/50
CPCG16Z99/00
Inventor 陈恩伟罗全陆益民吝辉辉仲凯魏浩征
Owner HEFEI UNIV OF TECH