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Vertical air pressure control system of air bearing table and control method thereof

A technology of air pressure control and air flotation platform, which is applied in space navigation equipment, simulation device of space navigation conditions, transportation and packaging, etc. The effect of convenient control, simple structure and strong operability

Inactive Publication Date: 2015-11-25
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor simulation effect caused by the poor vertical motion freedom of the existing air flotation platform. The present invention provides a vertical air pressure control system of the air flotation platform and its control method

Method used

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  • Vertical air pressure control system of air bearing table and control method thereof
  • Vertical air pressure control system of air bearing table and control method thereof
  • Vertical air pressure control system of air bearing table and control method thereof

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specific Embodiment approach 1

[0022] Specific implementation mode one: combine figure 1 , 2 and image 3 Describe this embodiment, the vertical air pressure control system of an air bearing platform described in this embodiment, the control system includes a displacement sensor 3, a pressure sensor 4 and a controller 8;

[0023] The air flotation platform of this implementation includes an upper platform body 1, an air chamber 2, a gas source 5, an air intake valve 6 and a proportional pressure regulating valve 7; the gas source 5 adopts high-pressure nitrogen to improve the quality of the gas. It regulates the pressure of the gas entering the air chamber 2 through the inlet valve 6 . The proportional pressure regulating valve 7 is used as the exhaust valve of the air cavity 2 . The air cavity drives the upper platform body 1 to move vertically.

[0024] The displacement sensor 3 is installed on the inner side of the air cavity 2 of the air bearing platform, and is used to measure the displacement of t...

specific Embodiment approach 2

[0031] Specific embodiment two: a control method for the vertical air pressure control system of the air bearing platform described in this embodiment,

[0032] The method is realized through the control of the controller 8, and the working process of the controller 8 includes:

[0033] Step 1: Control the intake valve 6, so that the gas in the gas source 5 enters the air cavity 2, so that the upper platform 1 moves;

[0034] Step 2: Randomly set an effective value within a stroke range, control the proportional pressure regulating valve 7 according to the effective value, and adjust the air pressure of the air chamber 2;

[0035] Step 3: Collect the displacement measurement value of the displacement sensor 3 in real time, subtract the displacement measurement value from the target displacement value, and judge whether the obtained difference is less than the set control accuracy. At this time, the speed is basically zero. If so, then real-time Collect the pressure measuremen...

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Abstract

The invention discloses a vertical air pressure control system of an air bearing table and a control method thereof and belongs to the field of aero-spatial physical simulation tests. The vertical air pressure control system of the air bearing table aims at solving the problem that an existing air bearing table is low in vertical motion freedom degree and accordingly the simulation effect is poor. The control system comprises a displacement sensor, a pressure sensor and a controller. The displacement sensor is installed on the inner side of an air cavity of the air bearing table and used for measuring moving displacement of an upper table body on the air bearing table. The pressure sensor is installed between the air cavity and the external environment and used for differential measurement of the pressure in the air cavity. The controller is used for controlling a proportional pressure regulation valve and an air inlet valve of the air bearing table according to data measured by the displacement sensor and the pressure sensor, regulating the air pressure of the air cavity to form closed-loop control, achieving displacement control and constant pressure control and achieving vertical freedom degree of the upper table body. The vertical air pressure control system is used for a vertical air pressure control mechanism of the air bearing table. An accurate initial pressure value is obtained through displacement control, then the vertical freedom degree of the air bearing table is ensured through a pressure tracking link, and the simulation effect is ensured.

Description

technical field [0001] The invention belongs to the field of physical simulation tests in the direction of aerospace. Background technique [0002] At present, countries around the world are actively developing aerospace equipment and seizing space resources. Before the spacecraft is officially put into use, it must go through ground physical simulation, so as to find defects as early as possible and ensure the successful launch of the spacecraft. How to design a physical simulation environment to simulate the operation of spacecraft in outer space to the greatest possible extent is a problem that all workers in the aerospace field must consider. [0003] The problem of poor simulation effect caused by the poor vertical motion freedom of the existing full-physics simulation test equipment. Contents of the invention [0004] The object of the present invention is to solve the problem of poor simulation effect caused by the poor vertical motion freedom of the existing air-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G7/00
Inventor 王一光王尔馥肖宇刘启循
Owner HEILONGJIANG UNIV
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