Vertical air pressure control system of air bearing table and control method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
View PDF6 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more