Novel flexible cable rigidity measuring method and system

Abstract

The invention provides a novel flexible cable rigidity measuring method and system. The method comprises the steps that: a weightless environment is simulated; in the weightless environment, a motioncabin is continuously excited through a non-contact actuating mechanism; a motion monitoring system is established, and the rotation angle and displacement of the motion cabin relative to a fixed cabin are measured; the kinetic model of the motion cabin is established, and periodic excitation kinetic information is outputted; periodic excitation motion information is separated from non-periodic excitation motion information in measurement information according to a motion separation algorithm; a stability controller is established, and it is guaranteed that the motion cabin does not collide with the fixed cabin during movement; a non-contact actuator force and torque distribution model is established, and steady-state control force, torque and periodic excitation are outputted to the motion cabin; and the force and moment of the cable end of the fixed cabin are collected, and a flexible cable rigidity coefficient matrix is obtained through calculation according to a spring model. According to the method and system of the invention, a reference basis and a calculation model are provided for subsequent selection and interference analysis of the inter-cabin cable of a double-super satellite model.

Description

technical field [0001] The invention relates to a composite control technology for a load compartment of a satellite platform with ultra-high pointing accuracy and ultra-high stability (double ultra), in particular to a method and system for measuring the stiffness of a novel flexible cable. Background technique [0002] The requirements for attitude 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 adopted, and the dynamic characteristics of the two are deeply coupled, which makes it difficult to achieve the double-exceeding index of the load. Although the active and passive micro-vibration suppression methods have achieved certain results, the defects of the limited fixed-connection design, It is difficult to achieve double super indicators. [0003] The "Shuangchao" satellite platform breaks the traditional fixed connection des...

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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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