Double-motor automatic balancing method of triaxial satellite simulator

Abstract

The invention discloses a double-motor automatic balancing method of a triaxial satellite simulator, wherein the double-motor automatic balancing method belongs to the technical field of satellite gesture control. According to the double-motor automatic balancing method, after artificial balancing is performed and stable airjet control gesture is realized, automatic balancing is performed by means of a stepping motor and an ultrasonic motor, wherein automatic balancing comprises the steps of firstly estimating a disturbance torque through establishing an air floating table kinetic model; then balancing an air floating table kinetic equation for determining the to-be-moved distance of a mass block in an actuating mechanism, then calculating the swinging period of the air floating table according to the vector of the mass center of the simulator which comprises a stepping motor mass block, estimating the disturbance torque according to the swinging period and determining an eccentric distance; and finally driving the stepping motor or the ultrasonic motor according to a comparison result between the eccentric distance precision and 0.01mm. According to the double-motor automatic balancing method, fine balancing is performed on the triaxial satellite simulator by means of the ultrasonic motor for compensating a defect of no enough precision in coarse balancing; furthermore balancing precision of the simulator is improved; and subsequent simulator tests are well ensured.

Description

technical field [0001] The invention discloses a dual-motor automatic balancing method for a three-axis satellite simulator, belonging to the technical field of satellite attitude control. Background technique [0002] With the continuous development of micro-satellites, the accuracy requirements for satellite simulators are becoming more and more stringent. How to provide a micro-gravity and micro-friction environment for satellite simulators under the influence of ground gravitational disturbance torque has become the focus of researchers' research. There is a large gravitational disturbance moment in the satellite simulator without trimming. If the simulator is used directly in the experiment, it may cause unreliable or invalid experimental data. This will not only consume manpower and material resources, but also fail to achieve our goals required requirements. During the trimming process of the satellite simulator, since the accuracy of manual trimming is not very high...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is aimed at the deficiencies of the above-mentioned background technology, and provides a dual-motor automatic balancing method for a three-axis satellite simulator, which uses the precision of the ultrasonic motor to compensate the unreachable precision of the stepping motor, and improves the trimming accuracy of the simulator. Solved the technical problem of poor trimming accuracy of stepper motors

Images