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Simulation method for influence of rotation part on flexible dynamics

A technology of rotating parts and simulation methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as non-existence, achieve accurate positioning, and ensure normal flight and business operations.

Active Publication Date: 2014-03-05
SHANGHAI SATELLITE ENG INST
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  • Description
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Problems solved by technology

However, there is no such method in the prior art

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  • Simulation method for influence of rotation part on flexible dynamics
  • Simulation method for influence of rotation part on flexible dynamics
  • Simulation method for influence of rotation part on flexible dynamics

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] refer to figure 1 , the method of the present invention comprises the following steps:

[0021] Step 1), analyzing the characteristics of the large rotating part, and establishing a dynamic model of the large rotating part.

[0022] Rotating parts are generally balanced when they leave the field, but there will still be residual static unbalance and residual dynamic unbalance. The residual static unbalance and residual dynamic unbalance are important indicators for evaluating the dynamic performance of rotating parts. . The disturbance torque of the rotating part can be caused by the residual static unbalance and the residual dynamic unbalance. Therefore, the dynamic model of the rotating part for outputting the disturbance torque can be created from the residual static unbalance and the residual dynamic unbalance. The residual static...

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Abstract

The invention discloses a simulation method for influence of a rotation part on flexible dynamics, comprising the steps of analyzing characteristic of the large rotation part, building a dynamics model of the large rotation part; analyzing structural dynamics of a flexible attachment of the rotation part; after modal truncation, generating a described vibration model under a linear modal coordinate; building a multi-body dynamics model with the flexible attachment by combining a rigid dynamics model; building a model of the flexible satellite attitude dynamics and a control system on the base of the built model; and using the model to perform simulation. The method can be used for checking a design result during the attitude and orbit control and dynamics design, and judging fault and inverting during the rail operation. The method solves an actual engineering problem of the rotation part for the dynamics influence analysis and achieves the benefice effects of improving stability and reliability of a platform.

Description

technical field [0001] The present invention relates to structural dynamics and dynamics, and more particularly, to a method for simulating the influence of rotating parts on flexible dynamics. Background technique [0002] With the development of modern technology, the requirements for satellite pointing accuracy and stability, as well as long life and high reliability are increasing day by day. The modeling and analysis of flexibility dynamics has become an important topic in the field of aerospace research. [0003] During the flight and control process, the disturbing force (moment) and control force (torque) will not only cause the change of position and attitude, but also arouse the elastic vibration of the flexible attachment in the rotating parts, and the elastic vibration of the flexible attachment will further It affects the control accuracy of the satellite and the stability of the payload imaging. Especially when the periodic torque generated by the rotating pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 吕旺薛孝补杨立峰朱海江
Owner SHANGHAI SATELLITE ENG INST
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