Method for producing disturbing torque to satellite using equivalent simulation of flexible accessory vibration by flywheel

An equivalent simulation and interference torque technology, which is applied in the simulation devices of space navigation conditions, space navigation equipment, transportation and packaging, etc., can solve the problems of satellite parameter equivalence, satellite interference, space environment differences, etc. Small, low-cost, easy-to-achieve effects

Inactive Publication Date: 2009-08-05
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that the existing flexible satellite attitude semi-physical simulation method is difficult to be equivalent to the real satellite parameters and has a large difference from the space environment, the invention proposes a method of using a flywheel to equivalently simulate the vibration of the flexible accessory to the satellite. Disturbance torque method

Method used

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  • Method for producing disturbing torque to satellite using equivalent simulation of flexible accessory vibration by flywheel
  • Method for producing disturbing torque to satellite using equivalent simulation of flexible accessory vibration by flywheel
  • Method for producing disturbing torque to satellite using equivalent simulation of flexible accessory vibration by flywheel

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specific Embodiment approach 1

[0016] Specific implementation mode one: this implementation mode consists of the following steps:

[0017] Step 1: Measure the moment of inertia of the single-axis air bearing table;

[0018] Step 2: According to the established dynamic model, the flexible coupling coefficient matrix of the vibration of the flexible attachment to the rotation of the satellite is obtained;

[0019] Step 3: Obtain the angular velocity and angular acceleration of the turntable according to the angle measurement system on the single-axis air bearing table;

[0020] Step 4: Calculate the flexibility according to the dynamic model of the flexible accessory, and obtain the displacement, velocity and acceleration of the modal coordinates of the accessory;

[0021] Step 5: According to the displacement, velocity and acceleration of the accessory modal coordinates obtained in Step 4, the equivalent moment of flexible disturbance loaded on the single-axis air bearing table is obtained;

[0022] Step 6...

specific Embodiment approach 2

[0061] Specific implementation mode two: see figure 1On the basis of Embodiment 1, this embodiment further defines that there are three flywheels for generating torque on the turntable of the single-axis air bearing table, and the three flywheels are evenly distributed on the turntable of the single-axis air bearing table.

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Abstract

The invention provides a method for generating interfering moment to a satellite by using flywheels to equivalently simulate the vibration of a flexible accessory, and relates to the method for generating the interfering moment to a satellite body by using the flywheels to equivalently simulate the vibration of the flexible accessory on a single-shaft air bearing table so as to solve the problems that the satellite simulation parameters are difficult to be equivalent to the real satellite parameters, and the environment has large difference from the environment of astrospace existing in the prior flexible satellite gesture semi-physical simulation method. The method utilizes the single-shaft air bearing table to simulate a spacecraft body, the control moment is provided by one flywheel arranged on the air bearing single-shaft table, and flexible interfering moment is equivalently provided by another two flywheels. When the single-shaft air bearing table simulates the spacecraft to run on a track and in particular the satellite gesture is driven, the flexible accessory has large interference to the satellite body. The interfering moment needs to be loaded on the single-shaft air bearing table during simulating. The method is applicable to simulating the situation that the spacecraft with the flexible accessory runs on the track and can reduce the technical difficulty and the cost of ground simulation validation of the spacecraft with the flexible accessory.

Description

technical field [0001] The invention relates to a semi-physical simulation verification method, in particular to a method for equivalently simulating the vibration of a flexible accessory by using a flywheel on a single-axis air bearing platform to generate disturbance torque on a satellite body. Background technique [0002] Semi-physical simulation of satellite control system is a unique simulation method in the process of satellite development. It uses a single-axis air-floor table as a motion simulator, also known as air-floor table simulation. The semi-physical simulation of the satellite control system uses a single-axis air bearing table to simulate the satellite body as the control object, and the control system uses the satellite control system for simulation. When a space vehicle performs semi-physical simulation, it is necessary to simulate important space environments such as weightlessness or no resistance on the ground. [0003] The single-axis air-bearing pla...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G7/00
Inventor 耿云海陈雪芹叶东王峰兰盛昌杨正贤董晓光张锦绣
Owner HARBIN INST OF TECH
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