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Multi-shaft support air floatation platform leveling method

An air-floating platform and shaft support technology, which is applied in the directions of supporting machines, machine tables/brackets, and feedback control, etc., and can solve the problems of narrow application scope and limited leveling state of supporting platforms.

Active Publication Date: 2013-09-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of limited leveling state and narrow application range of the existing support platform, and to provide a leveling method for multi-axis support air bearing platform

Method used

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  • Multi-shaft support air floatation platform leveling method
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specific Embodiment approach 1

[0071] Specific implementation mode 1: the following combination Figure 1 to Figure 10 In this embodiment, the leveling method of the multi-axis support air floating platform in this embodiment will be described. The multi-axis support air floating platform includes a bearing platform 1, M supporting legs 2, M air floats 3, and M air feet. 4, M is 3, 4, 5, 6, 7 or 8,

[0072] The carrying platform 1 is a circular platform, the carrying platform 1 is supported by M supporting legs 2, and M connecting points between the M supporting legs 2 and the lower surface of the carrying platform 1 form a regular M polygon;

[0073] The end of each support leg 2 is connected with an air float 3, and the bottom end of each air float 3 is connected with an air foot 4 through an air float ball bearing;

[0074] The leveling method realizes leveling through a measurement control system of a multi-axis supporting air-floating platform. The measurement control system includes a load feedback unit 5, a...

specific Embodiment approach 2

[0101] Specific implementation manner 2: the following combination Picture 8 This embodiment will be described. This embodiment will further explain the first embodiment. In this embodiment, M is 3, and the controller 9 in step 6 and step 7 performs data fusion processing on all the feedback signals it reads to obtain The specific method of adjusting the amount of support leg 2 is:

[0102] Set the linear array CCD7-3 to consist of six CCDs. The six CCDs on the circular horizontal concrete base are numbered in the circumferential direction as ①, ②, ③, ④, ⑤ and ⑥, with No. ④ CCD and No. ① The center line of the CCD is used as the X-axis direction of the spatial rectangular coordinate system, which is located on the horizontal plane X-0-Y where the reference light of the linear light source 11 is located, and the Y-axis of the spatial rectangular coordinate system is defined according to the right-hand rule Direction and Z-axis direction, set the radius of the circular horizontal ...

specific Embodiment approach 3

[0122] Specific implementation manner 3: the following combination Figure 1 to Figure 10 This embodiment will be described. This embodiment will further explain the first or second embodiment. The radius of the carrying platform 1 in this embodiment is 2 meters, and the three supporting legs are equilateral formed by three connection points on the lower surface of the carrying platform 1 The distance between the vertex of the triangle and the center of the bearing platform 1 is 1.4 meters.

[0123] image 3 As shown, the support leg 2 of the multi-axis supporting air bearing platform and the three connection points A, B, and C on the lower surface of the bearing platform 1 form an equilateral triangle with a side length of L=2424 mm. The air foot 4 relies on compressed air to form an air film between the air float ball bearing and the ball sleeve to achieve a nearly frictionless motion to simulate the dynamic environment of the spacecraft in the outer space with extremely small d...

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Abstract

The invention discloses a multi-shaft support air floatation platform leveling method and belongs to the technical field of ultraprecise apparatus platforms. The multi-shaft support air floatation platform leveling method aims to solve the problem that existing support platforms are limited in leveling conditions and narrow in application range. The method includes that: an upper computer transmits a current working mode, a control command and an error parameter to a controller via the Ethernet; the controller transmits servo period starting signals for every 200microseconds to start a moving state working mode or a static state working mode; the controller performs data fusion on all feedback signals read by the same so as to acquire regulating amount of support legs, corrects driving signals of a servo voice coil motor by means of driving a servo voice coil motor driver, judges whether a bearing platform is in static state or not and whether levelness of the bearing platform reaches to a preset precision range or not, and if so, finishes the current servo period leveling and waits for the next servo period till all servo periods are finished. The multi-shaft support air floatation platform leveling method is used for leveling of the air floatation platform.

Description

Technical field [0001] The invention relates to a leveling method of a multi-axis supporting air-floating platform, and belongs to the technical field of ultra-precision instrument equipment platforms. Background technique [0002] In modern society, a platform with high flatness is often needed. For example, in full physical simulation experiments such as space junction and docking, ground measurement, navigation, network communication and formation control, it is necessary to support the entire ground simulator to provide a basic platform for ground simulation experiments ; Provide platform support for formation satellite ground test verification, control algorithm verification and analysis and other physical simulation tests. Since the platform may be in a tilted state due to the unevenness of the large-area horizontal base when it is in motion or at rest, it is not conducive to providing a work platform as horizontal as possible for the load to ensure accurate docking. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16M11/32G05D3/12
Inventor 陈兴林王伟峰吴勇超李聪刘杨
Owner HARBIN INST OF TECH
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