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Single shaft air floating table balance adjusting method and system

An air floating platform and balancing technology, which is applied to static/dynamic balance testing, measuring devices, instruments, etc., can solve the problems of low balance adjustment accuracy, and achieve the effect of high adjustment balance accuracy, simple structure and operation

Active Publication Date: 2016-10-26
哈尔滨工大瑞驰高新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing air-floating platform balancing technology can only be adjusted for specific devices and the accuracy of balancing is low, the present invention further proposes a single-axis air-floating platform balancing method and system, Specifically include the following technical solutions:

Method used

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  • Single shaft air floating table balance adjusting method and system
  • Single shaft air floating table balance adjusting method and system
  • Single shaft air floating table balance adjusting method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] First, the formula for calculating the unbalanced mass value is derived:

[0079] Tilt the single-axis air bearing platform at an angle θ, such as Figure 9 As shown, when the load plate rotates due to inclination, its unbalanced mass provides a moment to make the load plate perform a simple pendulum motion. According to the moment balance, the following calculation formula is obtained:

[0080] Jα=Gsinθsin x L (1)

[0081] Among them, J represents the moment of inertia of the load plate, α represents the angular acceleration of the load plate, G represents the gravity of the unbalanced mass block, θ represents the inclination angle of the single-axis air bearing platform, and x represents the current position of the load plate to balance when it is doing a single pendulum motion. Angle of position.

[0082] Use the following calculation formula to calculate the period of simple pendulum motion:

[0083] J d ...

Embodiment approach 1

[0114] In the process of deriving the calculation formula of the unbalanced mass value, for the convenience of derivation, sinx≈x is taken, so the larger the degree x is, the greater the period error of the pendulum calculated in the calculation formula is, so try to change the swing angle during each test process Keep it within 20°, so that the accuracy of calculating the unbalanced mass value can be improved.

Embodiment approach 2

[0116] In the step of adjusting the balance, the cycle of the simple pendulum of the load plate can be measured multiple times, so that the accuracy of the measurement cycle can be increased, and the accuracy of calculating the unbalanced mass can be improved. The test process should be conducted in a closed environment as much as possible to avoid the impact of wind resistance and other environmental influences on the measurement results.

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Abstract

The invention provides a single shaft air floating table balance adjusting method and system, and belongs to the technical field of air floating table balance adjusting. The method includes the following steps: tilting a single shaft air floating table with a loading disk at a first preset angle; determining a position when a unbalance quality on the loading disk reaches the maximum motion speed as a balance position, and stopping the load disk to a balance position; rotating the loading disk with a second preset angle so as to enable the loading disk to swing freely, and determining a first single pendulum period; determining a first unbalance quality value of the loading disk under the second preset angle condition, placing a first quality block corresponding to the first unbalance quality value to a position where the loading disk has maximum height with respect to a horizontal plane; if the first single pendulum period of the loading disk is greater than a first critical single pendulum period, then considering that the single shaft air floating table is adjusted to balance. According to the invention, the method can adjust the balance of all types of air floating tables, and is advantaged by simple structure and operation and high precision in adjusting balance.

Description

technical field [0001] The invention relates to a single-axis air-floating platform balancing method and system, and belongs to the technical field of air-floating platform balancing. Background technique [0002] The single-axis air bearing simulation system is mainly used for the verification of high-precision and high-stability attitude control technology of spacecraft in orbit. The formed air film counteracts the gravity effect of the platform and the load, and at the same time allows the air bearing platform to rotate freely around the rotation axis approximately without friction. Through this full physical simulation, the purpose of simulating the free rotation of a certain axis when the satellite is in orbit is realized. Analyze and verify the effect of spacecraft attitude control with high precision and high stability. [0003] The problem that should be paid attention to when simulating the movement of satellite attitude on the ground is that the center of mass of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/32
CPCG01M1/32
Inventor 孟祥瑞马广程王常虹夏红伟葛占富
Owner 哈尔滨工大瑞驰高新技术有限公司
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