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Open-loop anti-swing control device for bridge crane and time delay filter

A bridge crane and control device technology, applied in transportation and packaging, impedance network, adaptive network, etc., can solve problems such as endangering personal safety and reducing production efficiency

Inactive Publication Date: 2020-12-29
SHENZHEN HPMONT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a flexible system, the crane will swing to a certain extent during the displacement process under the action of acceleration and inertia, which may reduce production efficiency if it is light, and endanger personal safety if it is serious

Method used

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  • Open-loop anti-swing control device for bridge crane and time delay filter
  • Open-loop anti-swing control device for bridge crane and time delay filter
  • Open-loop anti-swing control device for bridge crane and time delay filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Please refer to figure 1 , is a structural diagram of a bridge crane, which includes a trolley 1, a trolley 2 and a hoisting rope 3 for connecting a load 4 to the trolley 1. Among them, the cart 2 can move back and forth along the guide rail of the cart, the trolley 1 can move left and right along the guide rail of the cart 2 perpendicular to the running direction of the cart 2, and the hoisting rope 3 is supported by the winding rope fixed on the cart 1 The control of the mechanism can carry out lifting or lowering actions to drive the load 4 to move up and down. Through the movement of the cart 2, the trolley 1 and the lifting rope 4, the bridge crane realizes the free movement of the load 4 in three-dimensional position.

[0065] Please refer to figure 2 , is a structural diagram of an open-loop anti-sway control device in an embodiment. The open-loop anti-sway control device for an overhead crane includes a crane controller 11 , a cart electric drive system 12 an...

Embodiment 2

[0120] The present application also discloses a time-delay filter, which is used in the electric drive system of a bridge crane. The time-delay filter signal of the time-delay filter is:

[0121]

[0122] Among them, A i Indicates the magnitude of the time-lag filter, t i Indicates the time lag filter amplitude A i The corresponding moment is the time delay parameter of the filter pulse, n represents the number of pulses of the time delay filter, and C(s) represents the time delay filter signal.

[0123] When the pulse number n of the time-delay filter is 2, the amplitude and time position of the time-delay filter signal are:

[0124] T 1 = 0;

[0125]

[0126]

[0127] Among them, T 1 is the time of the first pulse, T 2 is the time of the second pulse, A 1 is the amplitude of the first pulse, A 2 is the amplitude of the second pulse, ξ 0 is the system damping of the time-delay filter, ω n0 is the system oscillation frequency of the lag filter.

[0128] W...

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Abstract

An open-loop anti-swing control device for a bridge crane comprises a crane controller, a trolley electric dragging system and a large vehicle electric dragging system, wherein the trolley electric dragging system and the large vehicle electric dragging system respectively convert a trolley preset speed signal and a large vehicle preset speed signal sent by the crane controller into a trolley given speed signal and a large vehicle given speed signal with an anti-swing effect through a time delay filter and a frequency converter, and a trolley motor driving voltage and a large vehicle motor driving voltage are obtained according to the trolley given speed signal and the large vehicle given speed signal so as to drive a trolley motor and a large vehicle motor. Due to the fact that the trolley given speed signal and the large vehicle given speed signal have the anti-swing effect, load swing of the bridge crane is restrained.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to an open-loop anti-sway control device and a time lag filter for bridge cranes. Background technique [0002] Bridge crane is a widely used industrial lifting equipment. As a special large-scale mechanical equipment, there is a considerable demand for a series of automatic control technologies to ensure its safe, efficient and stable operation during use in various industrial environments. However, the contradiction between the long-term swing of the bridge crane during transportation and the working efficiency of the bridge crane has become increasingly prominent, which has seriously affected the working efficiency of the bridge crane. Therefore, the anti-sway control of bridge cranes, as a key technology to suppress load swing, has begun to attract a lot of attention from manufacturers and researchers. As a flexible system, the crane will swing to a certain extent during the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/06B66C13/22H03H21/00
CPCB66C13/063B66C13/22H03H21/00
Inventor 张晓燕张永超张宁
Owner SHENZHEN HPMONT TECH
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