Research on the disturbance generated by a solar array drive assembly driving a flexible system

Abstract

The present work is aimed at presenting the disturbance generated by a solar array drive assembly (SADA) driving a flexible system. Firstly, the vibration equation of SADA is obtained by simplifying and linearizing the electromagnetic torque. Secondly, the disturbance model of SADA driving a discrete flexible system is achieved based on the vibration equation established. Taking a two-dof flexible system as the study object, this disturbance model is simulated and analyzed. Lastly, a continuous flexible system, which is designed to simulate the solar array, is used to illustrate the simulation method of the disturbance emitted by SADA driving a continuous flexible system. All the achievements obtained from this project will provide a theoretical basis for the prediction of the disturbance emitted by the SADA driving solar array on the orbit.

Integrated modeling of microvibrations induced by Solar Array Drive Mechanism for worst-case end-to-end analysis and robust disturbance estimation

“…The first contribution of this paper is to propose a novel Linear Parameter-Varying (LPV) model of SADM inspired by [27,28] in TITOP framework.…”

“…where 𝛥𝜃 𝑟 represents the mechanical angle between the actual position on the rotor and the theoretical equilibrium position between two consecutive pulse signals. The condition to be satisfied not to lose any step is [27]:…”

Integrated modelling of microvibrations induced by Solar Array Drive Mechanism for worst-case end-to-end analysis and robust disturbance estimation

“…The first contribution of this paper is to propose a novel Linear Parameter-Varying (LPV) model of SADM inspired by [25,26] in TITOP framework.…”

“…where ∆θ r represents the mechanical angle between the actual position on the rotor and the theoretical equilibrium position between two consecutive pulse signals. The condition to be satisfied not to lose any step is [25]:…”

Reformulation of Frequency Based Substructuring Method Considering Elastic Joints According to Sherman-Morrison-Woodbury Formula

“…In pace with the rapid development of science and technology, the engineering structure, such as aircraft and spacecraft, is becoming increasingly complicated. Thus, instead of traditional finite element method (FEM), dynamic substructure method is more and more widely used to analyse the dynamic properties of the complex engineering structure, [1][2]. According to solution domain, the dynamic substructure method can be divided into component mode synthesis (CMS) in time domain and FBSM in frequency domain.…”