New low-cost satellite three-axis attitude time-sharing decoupling high multiplexing jet control method

Abstract

The invention discloses a novel low-cost satellite three-axis attitude time-sharing decoupling and high-multiplexing jet control method, which comprises the following steps: through layout design of four thrusters, the satellite has three-axis control moment output capability under low-cost and simple configuration condition; the satellite has three-axis control moment output capability under low-cost and simple configuration condition. The moment distribution pulse width modulation algorithm from three axes command control torque to four thrusters pulse width is established, and the command torque is transformed into concrete jet pulse. Under the condition that the output three-axis control moments of four thrusters are highly multiplexed and strongly coupled, a time-sharing three-axis time-sharing decoupling jet control algorithm is established to realize the three-axis decoupling control. As that layout design of the four thrust is adopted, A torque distribution pulse width modulation algorithm from three axes command control torque to four thrusters pulse width is established, A time-sharing three-axis decoupling jet control algorithm is proposed, which realizes the three-axisdecoupling control under the condition of high multiplexing and strong coupling of three-axis control torque, and meets the requirements of satellite three-axis control torque output capability and low-cost attitude jet control mission.

Description

technical field [0001] The invention relates to space vehicle dynamics and control technology, in particular to a novel low-cost satellite three-axis attitude time-sharing decoupling high-multiplex jet control method. Background technique [0002] In recent years, various low-cost small satellites have developed rapidly. Generally speaking, the long-term control of satellites in orbit uses reaction flywheels, momentum wheels, magnetic torque devices, etc. as actuators. However, due to the small output torque of this type of angular momentum device, the control response is slow. In the early stage of orbiting, it is necessary to quickly eliminate the separation angular velocity and complete the sun capture through the fast-response jet control system to ensure the energy supply on the planet. Therefore, there is an urgent need for a low-cost and easy-to-configure jet control system for satellite attitude control. Through the layout design of the jet control system with sim...

AI Technical Summary

Problems solved by technology

The jet control system composed of 4 thrusters has the characteristics of high three-axis control coupling and high reuse rate for the same thruster. The traditional control algorithm design cannot output the control torque normally, and the attitude diverges.

[0003] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

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