Aircraft structural part positioning unit in-place method based on hybrid control

A hybrid control technology for aircraft structural parts, applied in the direction of program control, computer control, general control system, etc., can solve the problems of complex structure and cumbersome steps, and achieve the effects of simple and fast operation, reduced assembly stress, and accurate positioning

Active Publication Date: 2021-01-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method and device for accurate positioning of large aircraft parts in the above-mentioned patents have the following disadvantages: the hand-held craft ball head is put into the ball holder of the locator and used as the initial positioning calibration value, the steps are cumbersome, and the structure is relatively complicated

Method used

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  • Aircraft structural part positioning unit in-place method based on hybrid control
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  • Aircraft structural part positioning unit in-place method based on hybrid control

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Embodiment Construction

[0045] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0046] Embodiments of the present patent are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are only used for explaining the patent, and should not be construed as limiting the patent.

[0047] In the description of this patent, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the des...

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Abstract

The invention discloses an aircraft structural part positioning unit in-place method based on hybrid control, and relates to the technical field of digital assembly of large structural parts. The problem that a traditional locating method is not high in locating precision is solved. The method specifically comprises the following steps: measuring the pose of an aircraft structural part through a laser tracker, and determining hybrid control parameters by constructing a transmission model of a force control shaft; enabling a ball socket to move along the X/Y direction, and enabling the positions of the ball head and the ball socket to coincide as much as possible in the X/Y direction; running the ball socket run in a Z direction until the ball socket is in contact with the ball socket; andlifting the ball socket along the Z axis from the motion stage through mixed control until the ball head completely enters the ball socket; the positioning unit comprises a servo motor, a ball screw nut, a linear guide rail and a sliding platform. The positioning unit performs force control in the horizontal direction, so that the ball socket can be adaptively close to the ball head, the safety ofthe in-place process is ensured, the assembly stress is reduced, and the operation is simple and quick.

Description

technical field [0001] The invention relates to the technical field of digital assembly of large-scale structural parts, in particular to a positioning unit positioning method for aircraft structural parts based on hybrid control. Background technique [0002] In the digital assembly system of aircraft structural parts, the modular positioning unit is usually used as the actuator to realize the pose adjustment of aircraft structural parts. The positioning unit supports and adjusts the attitude of the aircraft structure through a spherical joint composed of a ball head and a ball socket. After the aircraft structural parts are transported to the assembly workshop by AGV, etc., the process of driving the positioning unit to make the ball head accurately fall into the ball socket is called positioning unit positioning. In order to improve the attitude adjustment accuracy, the gap between the ball head and the ball socket is very small, which exceeds the measurement accuracy of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/402B23P19/10
CPCG05B19/402B23P19/10G05B2219/37404
Inventor 李泷杲黄翔褚文敏李根曾琪周蒯李航宇楼佩煌钱晓明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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