Unlock instant, AI-driven research and patent intelligence for your innovation.

Intelligent adjustment method of center of mass of three-axis air bearing platform based on empirical mode method

An empirical mode method and intelligent adjustment technology, applied in the direction of control using feedback, can solve the problems of low adjustment accuracy and poor stability, and achieve the effect of shortening the observation time

Active Publication Date: 2016-12-07
HARBIN INST OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is to solve the problem of low adjustment accuracy and poor stability of the existing air flotation platform centroid signal adjustment method, and proposes an intelligent adjustment method for the center of mass of the three-axis air flotation platform based on the empirical mode 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
  • Intelligent adjustment method of center of mass of three-axis air bearing platform based on empirical mode method
  • Intelligent adjustment method of center of mass of three-axis air bearing platform based on empirical mode method
  • Intelligent adjustment method of center of mass of three-axis air bearing platform based on empirical mode method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the method for intelligent adjustment of the center of mass of a three-axis air bearing platform based on the empirical mode method described in this embodiment, the specific steps of the method are:

[0032] Three sets of center-of-mass adjustment mechanisms are used to adjust the center of mass of the three-axis air flotation table. Each set of center-of-mass adjustment mechanisms includes a motor and a mass block. The motor is used to drive the mass block to move. The three sets of center-of-mass adjustment mechanisms are evenly distributed and installed on the three-axis air flotation table. On the loading platform, and each group of center-of-mass adjustment mechanisms can move up and down;

[0033] Step 1, using an electronic inclinometer to measure the angle information x(t) of the X-axis direction of the three-axis air bearing platform loading platform, and perform step 2; where t is ...

specific Embodiment approach 2

[0046] Specific embodiment two, combine figure 2 , image 3 and Figure 4 Describe this embodiment. This embodiment is a further description of the intelligent adjustment method for the center of mass of the three-axis air bearing table based on the empirical mode method described in the first specific embodiment. Step 2 obtains the x-axis direction of the three-axis air bearing platform. The oscillation period c xn (t) method and step 22 to obtain the oscillation period c of the y-axis direction of the three-axis air bearing platform loading platform yn (t) and steps 2 and 3 to obtain the oscillation period c in the z-axis direction of the three-axis air bearing platform loading platform zn The method of (t) is the same, and the oscillation period c in the x-axis direction of the three-axis air bearing platform is obtained. xn (t) The specific steps of the method are:

[0047] Step 2 Obtain the oscillation period c of the X-axis direction of the three-axis air bearing p...

specific Embodiment approach 3

[0058] Specific embodiment three. This embodiment is a further description of the method for intelligent adjustment of the center of mass of the three-axis air bearing table based on the empirical mode method described in the second specific embodiment. The condition of the eigenfunction described in step 4 is:

[0059] Condition 1: The sum of the local maximum value and the local minimum value is equal to or differs from the number of zero-crossing points of the signal by one;

[0060] Condition 2: At any time, the average value of the upper envelope formed by fitting the local maximum through the cubic spline interpolation function and the lower envelope formed by fitting the minimum point through the cubic spline interpolation function is zero .

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

No PUM Login to View More

Abstract

The invention discloses an intelligent adjustment method for the mass center of a three-axis air bearing table based on the empirical mode method. The intelligent adjustment method solves the problems that an existing method for adjusting the mass center of the air bearing table is low in adjustment accuracy and poor in stability. According to the intelligent adjustment method, three mass center adjustment mechanisms are used for adjusting the mass center of the three-axis air bearing table, each mass center adjustment mechanism comprises a motor and a mass block, the motors are used for driving the mass blocks to move, the three mass center adjustment mechanisms are evenly distributed and installed on a carrying platform of the three-axis air bearing table, and each mass center adjustment mechanism can move vertically; an electronic inclinometer is used for measuring the angle information of the carrying platform of the three-axis air bearing table in the X-axis direction and the Y-axis direction, an industrial personal computer is used for controlling the motors to move, and then adjustment of the mass center of the three-axis air bearing table is realized. The intelligent adjustment method is suitable for adjustment of the mass center of the three-axis air bearing table.

Description

technical field [0001] The invention belongs to the field of full physical simulation on the ground, and in particular relates to a method for adjusting the center of mass of a three-degree-of-freedom air flotation simulation experiment platform system. Background technique [0002] With people's exploration of outer space, it has become a necessary step to develop and launch satellites by placing the developed satellites on the air flotation simulation platform for simulation tests, so as to reduce research costs and improve the success rate of satellite missions. The three-axis simulation platform is mainly used to simulate the attitude movement of aircraft and other equipment in a certain environment. The development of control technology and computer technology, as well as the development and application of new materials, make the simulation platform smaller in size, stronger in stiffness and higher in carrying capacity. In addition, the advancement of science and techn...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12
Inventor 刘杨李宗哲付振宪陈兴林周乃新强盛李欣马晔陈震宇王伟峰
Owner HARBIN INST OF TECH