Simple pendulum and rapid attenuation method for swinging of simple pendulum

A single pendulum, fast technology, applied in the direction of the engine, shock absorber, shock absorber, etc., can solve the problem of low attenuation efficiency of the single pendulum, and achieve the effect of improving the attenuation efficiency

Active Publication Date: 2019-01-22
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problem of low attenuation efficiency of the single pendulum existing in the prior art, the present invention provides a single pendulum and a method for quickly attenuating the swing of the single pendulum

Method used

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  • Simple pendulum and rapid attenuation method for swinging of simple pendulum
  • Simple pendulum and rapid attenuation method for swinging of simple pendulum
  • Simple pendulum and rapid attenuation method for swinging of simple pendulum

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Embodiment Construction

[0042] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0043] A novel fast decay method for single pendulum swing, comprising the following steps:

[0044] Step 1: Create as figure 1 The model of the simple pendulum with a moving slider is shown, and the quality, geometric dimensions and operating conditions of the slider and the pendulum are determined, including the mass m of the slider, the quality M of the swing bar, the distance between the slider and the swing bar The distance l of the turning point O, the length L of the swing rod, and the angle θ between the swing rod and the vertical direction. Assume that the rotation of the pendulum and the sliding of the slider are not affected by friction;

[0045] figure 1 in, l max and l min are the maximum and minimum distances the slider can move on the swing ...

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Abstract

The invention belongs to the technical field of machinery dynamics, and particularly relates to a simple pendulum and a rapid attenuation method for swinging of the simple pendulum. The rapid attenuation method for swinging of the simple pendulum comprises the following steps: establishing a simple pendulum model; establishing a kinetic equation of the simple pendulum with a movable slider; acquiring a movement path of a slider which can attenuate swinging of the simple pendulum according to the direction and magnitude of geostrophic force on the slider during movement; acquiring the ratio ofacceleration and deceleration motion time for movement of the slider or the time of a path in total movement time or the path according to a function conversion relation of the slider when the slidermoves in a certain range; and acquiring the movement range and movement time of the slider by quantitatively analyzing equivalent damping ratio generated by movement of the slider. The real process ofmovement of the slider is analyzed, slider movement which has the best effect on inhibition of swinging of the simple pendulum under the practical situation is designed, the proposed method is favorably applied to the aspect of anti-swinging active control of a simple pendulum structures, and then the simple pendulum attenuation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical dynamics, and in particular relates to a simple pendulum and a method for quickly attenuating the swing of the single pendulum. Background technique [0002] At present, the research on the swing attenuation method of the single pendulum mainly includes changing the pendulum length and moving the swing point of the single pendulum. By using the periodical continuous change of the pendulum length, the swing of the simple pendulum can be gradually reduced, but the method of continuously changing the pendulum length is not efficient. Moving the turning point of the single pendulum to reduce the swing is mostly used in the field of automatic control. Although the automatic attenuation of the swing can be realized through closed-loop control, it cannot achieve high efficiency. Contents of the invention [0003] (1) Technical problems to be solved [0004] Aiming at the technical problem of low a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G3/06F16F7/10G06F17/50
CPCF03G3/06F16F7/1005G06F30/20G06F2111/10
Inventor 李朝峰张子健乔瑞环申增闯杨青玉仲秉夫
Owner NORTHEASTERN UNIV LIAONING
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