Non-momentum wheel satellite platform based on magnetic buoyancy device control system

Abstract

The invention discloses a non-momentum wheel satellite platform based on a magnetic buoyancy device control system. The non-momentum wheel satellite platform comprises a static cabin, a movable cabin and magnetic buoyancy devices, wherein a permanent magnet is arranged on each magnetic buoyancy device; the static cabin is connected with the magnetic buoyancy devices through the movable cabin; the static cabin comprises a load cabin body, a payload base, an attitude sensor, two gyroscopic sensors and a platform electronics sensor, wherein the load cabin body is fixed to the bottom of the static cabin; the platform electronics sensor is fixed to the static cabin; the two gyroscopic sensors are fixed to the surface of the load cabin body; and the attitude sensor is fixed to the right side of the load cabin body. The non-momentum wheel satellite platform based on the magnetic buoyancy device control system disclosed by the invention has the advantages of being low in cost, high in accuracy, long in life, and high in reliability; and the requirements of subsequent development of astronautical missions of comprehensive remote sensing to ground, communication, navigation, space science and the like can be better met.

Description

technical field [0001] The invention relates to a satellite platform and relates to a momentum wheel-free satellite platform based on a magnetic buoyancy device control system. Background technique [0002] In the future, high-performance aerospace equipment requires attitude pointing accuracy and stability to be two orders of magnitude higher than the current level. The vibration of flexible accessories such as large solar panels of traditional satellites and the micro-vibration of actuators such as flywheels and gyroscopes are important reasons for reducing the accuracy and stability of attitude pointing. [0003] Traditionally, there are mainly three suppression methods for the vibration of satellite flexible accessories and movable parts: passive vibration isolation, active vibration isolation and active-passive hybrid vibration isolation, but these methods cannot meet the requirements of ultra-high precision control of future spacecraft. A master-slave non-contact ultr...

AI Technical Summary

Problems solved by technology

However, while the platform meets the ultra-high-precision control requirements of the load compartment, the platform compartment still has momentum wheel actuators such as flywheels and control moment gyroscopes, and there are problems such as friction, resulting in low life and reliability of the platform.

[0004] At the same time, the unit price of momentum wheel actuators such as flywheels and control torque gyroscopes is relatively high. The unit price of ordinary flywheels exceeds 1.5 million yuan / unit, and the unit price of high-precision flywheels is higher. The unit price of control torque gyros exceeds 10 million yuan / unit, and they need to be installed in groups. , leading to extremely high cost of the entire platform and extremely high implementation cost

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