Momentum wheel simulator based on self-adaptive friction moment model

Abstract

The invention provides a momentum wheel simulator based on a self-adaptive friction moment model. The momentum wheel simulator comprises a friction moment parameter correction module, a switch command acquisition module, a direction definition acquisition module, a control moment acquisition module, a rotation speed signal generation module, an indicator light control module, a power supply telemetry generation module, a motor current telemetry generation module, a bearing temperature telemetry generation module and a momentum wheel simulator control module. According to the invention, the momentum wheel simulator is based on the structure of a CPCI bus and a VxWorks real-time operating system; the modules can be freely increased or decreased according to demands; fidelity simulating is carried out on the timing characteristic and the electrical characteristic of all signals of a momentum wheel; a momentum wheel motion mathematical model based on the self-adaptive friction moment model is used; the momentum wheel simulator can automatically select an appropriate moment torque model according to test conditions; and the characteristic of the friction moment, which changes with rotation speed, of the momentum wheel can be accurately reflected.

Description

technical field [0001] The invention relates to a momentum wheel simulation technology, in particular to a momentum wheel simulator based on an adaptive friction moment model. Background technique [0002] The momentum wheel is the key actuator of the satellite control subsystem, which is generally driven by electric energy and does not require additional fuel. Momentum wheel simulators can replace real components to participate in the development and test tasks of satellites. Compared with the research work on real momentum wheel components, there are less researches on momentum wheel electrical performance simulators. The existing research on the design of the momentum wheel simulator mainly focuses on two aspects: (1) the design of the hardware architecture; (2) the establishment of the friction torque model of the momentum wheel. [0003] At present, the design methods of the hardware architecture of the momentum wheel simulator mainly include the single-board design ba...

AI Technical Summary

Problems solved by technology

Momentum wheels can be divided into four different areas according to the rotational speed: static friction area, boundary lubrication area, partial liquid lubrication area, and full liquid lubrication area. The dynamic friction characteristics of each area are different, but the existing momentum friction torque model technology uses Linear fitting cannot accurately simulate the friction characteristics of the momentum wheel, especially when the momentum wheel simulator is required to simulate the instantaneous change of the speed, the error caused by the linear fitting will bring obvious errors to the closed-circuit test of the momentum wheel application system, so it is necessary A More Accurate Momentum Wheel Simulation Technique or Model

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