Flexible cable rigidity measurement test method and system and medium

Abstract

The invention provides a flexible cable rigidity measurement test method which comprises the following steps: a weightlessness simulation step: simulating a weightlessness environment to enable a motion cabin to move in a plane; an excitation step: carrying out periodic excitation on the motion cabin according to a set amplitude value; a motion monitoring step: measuring the rotation angle and thedisplacement of the motion cabin relative to the fixed cabin; a separation step: separating the measured excitation motion from the measured non-excitation motion to obtain the non-excitation motion;a steady-state control step: controlling the motion cabin not to collide with the fixed cabin in the motion period according to the non-excitation motion to obtain a steady-state control instruction;an execution step: controlling force and moment according to the periodic excitation and steady-state control instruction, and distributing the force and the moment to each actuator; and a calculation step: collecting the force and the moment of force of the cable end of the fixed cabin, and calculating to obtain a flexible cable rigidity coefficient matrix according to the amplitude of periodicexcitation. According to the invention, a reference basis and a calculation model are provided for subsequent selection and interference analysis of the inter-cabin cable of the double-super satellitemodel.

Description

technical field [0001] The invention relates to the technical field of composite control, in particular to a test method, system and medium for measuring the stiffness of a 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 design, and uses non-contact, high-precision, and time-delay displacement sensors to separate the load (cha...

AI Technical Summary

Problems solved by technology

[0004] At present, the wireless power supply and information transmission technology in the satellite is not yet mature, and the energy and information interaction between the two cabins needs to be realized through cabin cables.

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