Highly precise speed mode control system for magnetic floating counteractive flywheel electromotor

Abstract

The utility model relates to a high precision velocity-mode control system of a magnetic levitation counteractive flywheel motor, which is used in a high precision attitude control executive device of a new-generation satellite with high-stability, namely the high precision velocity controlling of the magnetic levitation counteractive flywheel motor. The utility model mainly comprises a controller with a DSP as the core, a three-phase bridge power amplifier, a three-phase bridge drive circuit, an increment type shaft angle encoder, a three-phase permanent magnetic brushless direct current motor, a 28V steady direct current power supply, a +15V steady direct current power supply, a plus or minus 5V steady direct current power supply, a current checking part and Hall-effect rotor position sensor. Through the two channels of orthogonal encoding pulse signal of the increment type shaft angle encoder, the utility model provides the low-velocity controlling of the magnetic levitation counteractive flywheel motor with the velocity feedback when the velocity is in the electrically allowable rotational speed range of the increment type shaft angle encoder to realize the high precision velocity-mode controlling of the magnetic levitation counteractive flywheel motor; the signal of the Hall-effect rotor position sensor is used as the velocity feedback when the velocity is out of the electrically allowable rotational speed range of the increment type shaft angle encoder.

Description

technical field

[0001] The invention relates to a high-precision rate mode control system of a magnetic levitation reaction flywheel motor, which belongs to the field of aerospace control and is used to realize attitude control of a new generation of high-precision and high-stability satellites. Background technique

[0002] The new generation of satellite earth observation technology is becoming more and more perfect. It is a multi-layer, three-dimensional, multi-angle, all-round and all-weather, high, medium and low orbit combination, large, medium and small satellite coordination, coarse, fine and fine resolution Complementary global Earth observation systems are being formed. The high-precision and high-stability attitude control technology of the new generation of earth observation satellites is one of the key technologies that need a breakthrough.

[0003] The reaction flywheel is widely used as the executive part of satellite attitude control, and its average angular...

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