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Method, system and engineering machinery for improving arm frame movement stability

A motion stability, engineering machinery technology, applied in control/adjustment systems, non-electric variable control, position/direction control, etc., can solve problems such as boom vibration control and scarce trajectory control

Active Publication Date: 2013-04-24
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology

[0002] At present, there are very few researches on the vibration control and trajectory control of the boom during the movement process at home and abroad.

Method used

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  • Method, system and engineering machinery for improving arm frame movement stability
  • Method, system and engineering machinery for improving arm frame movement stability
  • Method, system and engineering machinery for improving arm frame movement stability

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0023] Since the stiffness of the boom changes greatly during the movement of the boom, the system cannot be simplified into a fixed dynamic equation by static structural modeling. For this reason, the present invention proposes a vibration control scheme during the movement of the jib based on the structural dynamics model of the variable attitude jib. The telescopic folding arm of a high-altitude fire truck is used as an example for illustration below. Of course, the present invention is not limited thereto, and the present invention is applicable to any jib that requires vibration control, stability control, and / or trajectory planning.

[0024] figure 1 It ...

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Abstract

The invention discloses a method, a system and engineering machinery for improving arm frame movement stability. The method for improving the arm frame movement stability comprises a step of receiving elastic deformation of an arm frame, and a step of reducing the speed of movement of the arm frame when the elastic deformation exceeds a preset range, in the process of controlling the arm frame to move along a track. The faster the arm frame moves, the larger dynamic load the arm frame bears. Therefore, according to the technical scheme, reducing the speed of movement of the arm frame is beneficial for reducing the elastic deformation of the arm frame and improving the stability of the arm frame.

Description

technical field [0001] The present invention relates to the field of construction machinery, in particular to a method and system for improving the stability of boom movement and construction machinery including the system Background technique [0002] At present, there are very few researches on the vibration control and trajectory control of the jib during the motion process at home and abroad. Universities and research institutions at home and abroad have carried out a lot of research work on the active control of piezoelectric smart materials applied to cantilever beams. The control method is to suppress the deformation of the structure through the direct and inverse piezoelectric effects of piezoelectric materials. In addition, Komatsu and foreign excavator companies have conducted research on the vibration control of the boom structure of the excavator. Magirus, a famous foreign fire truck company, has conducted trajectory control and simple vibration reduction treatme...

Claims

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Application Information

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IPC IPC(8): G05D3/00
Inventor 刘仰清曾亚平王曦鸣曾光王唯金
Owner ZOOMLION HEAVY IND CO LTD
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