System orientation control system the spacecraft about the center of mass

UDC 629.7.05

System orientation control system the spacecraft about the center of mass
E: S. Petrenko, student of350 group
National aerospace university named after N. Ye. Zhukovsky “KhAI”

The purpose of the work is to develop system of orientation of the spacecraft about the center of mass.The problem of the developed system of orientation is to increase the accuracy, reliability, improve quality, safety and increase the damping of oscillations.Automatic orientation of the spacecraft “Chibis-M” on three axes is performed by creating a magnetic, control moments when a deviation from the sensor measures the spacecraft magnitude and direction of the magnetic induction (magnetometer) and desired direction occurs.In this work we developed a functional diagram of the automatic orientation, which is formed on the basis of the block diagram.

On the structural scheme we transfer functions of open and closed system with respect control and disturbances. With the help of these step responses were built have been built transition. Having analyzed transition and defining quality of the orientation system, it was concluded that the original system does not meet the required specification. On this basis it was concluded that in the system controller must be added, which will allow the system to adjust. Accordingly, model control law is selected to calculate coefficients regulator exercising the law. It was also conducted computer simulations of the automatic orientation and analysis of the quality control system of automatic orientation correction and synthesis of digital systems orientation. Comparing the results with the original, it was noted that the work of the orientation system has improved. Stage concludes this work was to seminatural simulation orientation system using a laboratory bench. This result meets the required specification.

* Scientific advisor c.t.s., associated prof. dep. 301 V.F. Symonov