Device and method for adjusting mass characteristic of aircraft-simulated air bearing table

A technology for aircraft simulation and quality characteristics, which is applied in the field of aircraft simulation air bearing platform quality characteristic adjustment devices, can solve problems such as no implementation method given, and achieve the effects of easy maintenance, simple calculation principles, and easy realization

Active Publication Date: 2016-01-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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) The automatic balancing device of the three-axis air bearing table is given theoretically, but no specific implementation method is given

Method used

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  • Device and method for adjusting mass characteristic of aircraft-simulated air bearing table
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  • Device and method for adjusting mass characteristic of aircraft-simulated air bearing table

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Effect test

Embodiment 1

[0037] Such as Figure 1-2 As shown, a device for adjusting the mass characteristics of an aircraft simulated air bearing platform includes a base 1, an air bearing pair 2, a load table 3, an inertia ring 4, a coarse adjustment balance mechanism 5, two fine adjustment balance mechanisms 6, and a pad iron 7 and hydraulic jack adjustment pad iron 8; the air bearing pair 2 is installed on the base 1, the load table 3 is installed on the air bearing pair 2, the inertia ring 4 is installed on the outside of the load table 3, and the coarse adjustment balance mechanism 5 is installed on On the inertia ring 4, the fine-tuning balance mechanism 6 is installed under the load table 3, and the bottom of the base 1 is supported on the foundation through the pad iron 7 and the hydraulic jack adjustment pad 8; the opposite side of the unbalanced position on the load table is corresponding Add a coarse adjustment mass block of the same mass to the coarse adjustment balance mechanism 5, the c...

Embodiment 2

[0039] Adopt a kind of aircraft simulation air bearing platform mass characteristic adjustment device as shown in embodiment 1, draw a kind of aircraft simulation air bearing platform quality characteristic adjustment and measuring method, as follows:

[0040] Step 1: After the air bearing table is installed, power on the system, first move the two mass sliders of the fine-tuning balance mechanism to the middle position of its stroke, and then lift the air bearing table upwards with a hydraulic jack at the bottom of the base Height c, make the air bearing platform tilt angle θ relative to the horizontal plane;

[0041] Step 2: Due to the imbalance of the system, the load table rotates. When the load table stops rotating, the part with the largest mass will rotate to the bottom of the table. At this time, manually rotate the turntable by an angle, and use the angle measuring element to measure the angle. x, after letting go, the turntable will do a single pendulum motion, use t...

Embodiment 3

[0065] Regarding the judgment of the balance of the air bearing system, in theory, the turntable can be stopped at any position, which means that the system is balanced. However, the ideal situation cannot be achieved in actual engineering. The following methods can be used to illustrate the system balance:

[0066] After the fine-tuning mass is adjusted, the turntable will perform a slow single pendulum motion. The speed of the turntable at the initial moment is 0. This moment is taken as the initial moment. When the angle measuring element is used to measure the speed of the turntable to be 0 again, the swing of the turntable is calculated. The half period corresponds to time t, and the entire period 2t is used to compare with the pendulum period T corresponding to the unbalanced torque allowed by the system. If the pendulum period is greater than T seconds, it means that the balance accuracy requirements of the system are met.

[0067] When the system is unbalanced, the tes...

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Abstract

The invention provides a device and method for adjusting mass characteristic of an aircraft-simulated air bearing table. The adjusting device comprises a base, an air bearing pair, a loading platform surface, an inertia ring, a coarse-adjusting balancing mechanism, two fine-adjusting balancing mechanisms, a shim plate and a hydraulic jack adjusting shim plate, wherein the loading platform surface is mounted on the air bearing pair; the inertia ring is mounted on the external side of the loading platform surface; the coarse-adjusting balancing mechanism is mounted on the inertia ring; the fine-adjusting balancing mechanisms are mounted under the loading platform surface; and the bottom of the base is supported on the foundation through the shim plate and the hydraulic jack adjusting shim plate. The smaller the unbalance mass is, the larger the single pendulum period is; therefore, the balance degree of the system can be judged through the amplitude of the single pendulum period; and moreover, the time when the system can finish the coarse-adjusting process to perform the fine-adjusting process can be calculated by using the single pendulum period. The invention is advantaged in that the calculating principle is simple and the adjusting processes are easy to realize in engineering and easy to maintain.

Description

technical field [0001] The invention relates to measurement technology, in particular to a device and method for adjusting quality characteristics of an aircraft simulated air bearing platform. Background technique [0002] The full physical ground simulation test of the space vehicle is of great significance to the development of the space vehicle. In its core equipment—the air-flotation simulation system based on the air-bearing bearing, high-pressure air forms an air film between the shaft and the bearing seat so that the simulation platform The object floats, so as to realize the simulation test of the mechanical environment with little disturbance torque in the outer space. A very key issue in realizing this kind of mechanical environment is the adjustment of the quality characteristics of the platform body, which is directly reflected in the comprehensive disturbance torque of the platform body. , so the research on the adjustment of the mass characteristics of the air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G7/00
Inventor 王常虹夏红伟马广程曾庆双任顺清
Owner HARBIN INST OF TECH
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