New flexible cable stiffness determination method and system

Abstract

The invention provides a new type of flexible cable stiffness determination method and system, including: simulating a weightless environment; in the weightless environment, continuously exciting a motion cabin through a non-contact actuator; establishing a motion monitoring system to measure the relative force of the motion cabin relative to the fixed cabin. Rotation angle and displacement; establish motion cabin dynamics model, output periodic excitation dynamic information; separate periodic excitation motion information and aperiodic excitation motion information in measurement information according to motion separation algorithm; establish stable controller to ensure motion cabin Do not collide with the fixed cabin during the movement; establish a force and moment distribution model of the non-contact actuator, and output the steady-state control force and moment and periodic excitation to the movement cabin; collect the force and moment of the cable end of the fixed cabin, and solve it according to the spring model The flexible cable stiffness coefficient matrix is ​​calculated; the invention provides a reference basis and a calculation model for the selection and interference analysis of the subsequent double-supersatellite model cabin cables.

Description

technical field [0001] The invention relates to a composite control technology with ultra-high pointing accuracy and ultra-high stability (double-super) satellite platform load compartment, in particular to a novel flexible cable stiffness determination method and system. Background technique [0002] The requirements for attitude and pointing accuracy and stability of future advanced spacecraft are two orders of magnitude higher than the current level. Traditionally, the fixed-connection design of the load and the platform is used, and the dynamic characteristics of the two are deeply coupled, which makes it difficult to achieve the double-overload index of the load. Double super indicators are difficult to achieve. [0003] The "Double Super" satellite platform breaks the traditional fixed design and adopts non-contact, high-precision, time-delay displacement sensors to separate the load (cabin) where only quiet parts are installed from the platform (cabin) where moving p...

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Problems solved by technology

[0005] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

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