High-integration high-precision servo control device for control moment gyros

Abstract

The invention discloses a high-integration high-precision servo control device for a control moment gyros, and is applied to the satellite attitude control executing mechanism. A slave controller FPGA acquires frame angular position signals of two frame motors through two frame position acquisition circuits respectively in real time, and acquires angular velocity signals of two flywheel motors through two hall signal acquisition circuits respectively in real time, and the signals are sent to a master controller DSP through an address / data / control bus to serve as respective velocity feedback values; the master controller DSP respectively acquires current values of the two frame motors and the two flywheel motors through two U / V phase current acquisition circuits and two busbar current acquisition circuits to serve as respective current feedback values; the master controller DSP carries out double closed-loop control over the velocity and current of the four sets of motors by combining with a corresponding servo control algorithm according to respective velocity and current feedback values, to produce a PWM instruction, the slave controller FPGA produces PWM according to the instruction, and high-precision servo control over the four sets of motors is realized.

Description

technical field [0001] The invention relates to a highly integrated and high-precision control torque gyroscope group servo control device, which is used for the servo control of two sets of control torque gyroscopes, and is suitable for high-integration, high-precision small and medium-sized agile satellite attitude control actuators. Background technique [0002] As a small and medium-sized agile satellite attitude control actuator, the control moment gyroscope can output dozens of times the torque of the traditional flywheel under the same power consumption, volume and mass by using its "torque amplification" feature, which greatly shortens the satellite maneuvering time. Realize multiple push-broom and splicing imaging of wide-format targets within a single track. The control moment gyro has been successfully applied in the WorldView-1 / 2 and Pleiades satellites, which greatly enhanced the maneuverability of the satellites and improved the agility of the satellites. [0...

AI Technical Summary

Problems solved by technology

[0004] The servo control of the control torque gyro is usually divided into the servo control of the frame motor and the flywheel motor, that is, the frame motor and the flywheel motor are servo-controlled based on their respective circuit systems, which will increase the power consumption, volume, quality and cost, the system integration is low

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