Uniaxial air bearing table balance adjustment method

A technology of balance adjustment and air flotation table, applied in the field of measurement, can solve problems such as difficult engineering applications and no implementation methods given, and achieve the effect of no electromagnetic interference, low cost, and simple principle

Inactive Publication Date: 2009-08-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Yanbin, Baotou Steel, Wang Zuwen, Lu Yandong, etc. in the paper "Dynamic Modeling of Automatic Balance System of Three-DOF Air Bearing Platform" (see "Chinese Journal of Inertial Technology", 2005, Volume 13, Issue 5, Pages 83-87) Theoretically, the automatic balancing device of the three-axis air flotation table is given, and the specific implementation method is not given, which is difficult for engineering application
And the above methods are all for three-axis air flotation table, not suitable for uniaxial air flotation table, and the effective balance method data for uniaxial air flotation table has not been reported yet

Method used

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  • Uniaxial air bearing table balance adjustment method
  • Uniaxial air bearing table balance adjustment method
  • Uniaxial air bearing table balance adjustment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, combining figure 1 , figure 2 , the method for adjusting the balance of the uniaxial air bearing platform of the present invention, the steps are as follows:

[0018] Step 1: Adjust the single-axis air bearing table to not level, measure the angle between the plane of the air bearing table and the local horizontal line with a spirit level, and record it as α;

[0019] Step 2: Make the single-axis air bearing table swing back and forth under the action of gravity, and record the amplitude and period of the swing;

[0020] Step 3: Calculate the actual eccentricity L of the center of gravity of the single-axis air bearing table and the center of rotation of the single-axis air bearing table according to the swing period;

[0021] Step 4: Place corresponding counterweights on the centerline of the recorded swing angles on both sides of the single-axis air bearing table to adjust the balance; Step 5: Repeat the above steps until the eccentricity is zero or s...

Embodiment 2

[0027] Example 2, combined with figure 1 , figure 2 , image 3 , Figure 4 , the balance adjustment method of the uniaxial air bearing platform of the present invention, the calculation method is as follows:

[0028] First, tilt the single-axis air bearing table at a certain angle. The specific operation is that there are feet or ground feet installed under the base of the single-axis air bearing table. The number is usually 3 (or more). The purpose of tilting the single-axis air bearing table can be achieved by adjusting any one of the feet up or down (if there are more than one, select any adjacent several pads to adjust up or down).

[0029] Then use a level to measure the angle of inclination α, and the specific steps are: (1) put the level on the uniaxial air bearing table, such as Figure 4 As shown, the level should be close to the outer edge of the single-axis air bearing table; (2) Record the degree of the level, denoted as a 1 , turn the single-axis air bearing...

Embodiment 3

[0032] Example 3, combined with image 3 , the balance adjustment method of the uniaxial air bearing platform of the present invention, the balance weight is selected and placed as follows:

[0033] When determining the swing period and amplitude of the air bearing table, it is carried out on the downhill side, or on the heavier side, so the weight should be added to the lighter side, that is, the eccentric point and the center of rotation contralateral position, such as image 3 shown. In addition, when placing weights, place the lightest weight first, and if it does not meet the requirements, replace it with a heavier weight, and so on, step by step. When the counter weight is placed, if the test equipment has been installed on the placement point, the operator needs to be flexible at this time, that is: if the test equipment allows weights to be placed, the weights are placed on the equipment. According to the inventor With many years of operating experience, there is al...

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Abstract

The invention aims to provide a single axle air bearing table balancing adjustment method with simple principle, low cost and convenient operation. The balancing adjustment method includes the following steps: step 1: the single axle air bearing table is adjusted to be not horizontal and a gradienter is used to measure an angle Alpha between the plane of the air bearing table and the local horizontal line; step 2: the air bearing table is caused to sway to-and-fro under the action of gravity and the swaying amplitude and cycle are recorded; step 3: the actual eccentricity L of the gravity and a revolving center of the single axle air bearing table are calculated according to the swaying cycle; step 4: a corresponding balance weight is arranged on a central line of recorded swaying angles at two sides of the air bearing table to adjust the balance; and step 5: the above steps are repeated until the eccentricity is zero or small enough to meet engineering requirements. The balancing adjustment method has simple principle, convenience, practicability, low cost and no electromagnetic interference to the single axle air bearing table.

Description

(1) Technical field [0001] The invention relates to measurement technology, specifically a method for adjusting the balance of a single-axis air bearing platform. (2) Background technology [0002] The air bearing table relies on the air film formed between the air bearing and the bearing seat by compressed air to make the simulated table body float, so as to realize the relative motion condition of approximately frictionless, so as to simulate the satellite in the outer space with a small disturbance moment. Mechanics environment. As a satellite motion simulator, the use of a single-axis air bearing table can simulate the operating characteristics of a certain axis. The full physical simulation through the air bearing table plays an important role. It is an indispensable tool for program demonstration and functional verification. Simulation practice has proved that the use of air bearing platform for simulation not only plays an important role in the verification of satell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/32
Inventor 马广程夏红伟王常虹温奇咏解伟男
Owner HARBIN INST OF TECH
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