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

A technology of interference torque and equivalent simulation, which is applied to simulation devices of space navigation conditions, space navigation equipment, attitude control and other directions, and can solve the problems of satellite parameter equivalence, satellite interference, and differences in space environment, and achieves a small amount of calculation. , low cost, easy to achieve effect

Inactive Publication Date: 2010-09-15
HARBIN INST OF TECH
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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

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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 embodiment 1: This embodiment 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, obtain the flexible coupling coefficient matrix of the vibration of the flexible accessory to the satellite rotation;

[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 accessory's modal coordinates;

[0021] Step 5: According to the displacement, velocity and acceleration of the accessory modal coordinates obtained in Step 4, obtain the flexible interference and other effective moments loaded on the single-axis air bearing table;

[0022] Step 6: According to the flexible interference equival...

specific Embodiment approach 2

[0061] Specific implementation manner 2: see figure 1 On the basis of the first embodiment, this embodiment further defines that the turntable of the single-axis air bearing table has three flywheels that generate torque, 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 problemsthat 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 using a flywheel to equivalently simulate the vibration of a flexible accessory on a single-axis air bearing platform to generate an interference torque on a satellite body. Background technique [0002] Semi-physical simulation of the satellite control system is a unique simulation method in the process of developing satellites. It uses a single-axis air bearing table as a motion simulator, also known as air bearing table simulation. The semi-physical simulation of the satellite control system adopts a single-axis air bearing platform to simulate the satellite body as the control object, and the control system adopts the actual object of the satellite control system for simulation. When a spacecraft performs semi-physical simulation, it is necessary to simulate important space environments such as weightlessness or no resistance on the ground. [0003] The...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/08B64G7/00
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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