Methods for Investigation of Relay System for Spacecraft Stabilization with Internal Feedback

The relay system of the angular spacecraft stabilization without using angular speed sensors is considered. The internal feedback embracing a relay regulator is applied for ensuring the economic self-oscillation mode. In the 1970s, the specialists of the "NPO Mashinostroeniya" enterprise and of the department created by academician V.N. Chelomei at the Bauman Moscow Higher Technical School carried out theoretical studies of relay systems, in which aperiodic links were used as internal feedback. At the same time a problem of investigation of these systems did not lose its urgency. The existing methodical approach causes problems especially in synthesis of internal feedback. The critical analysis of the applied methods has shown the combination of analytical studies and computer technologies is promising. A technique is proposed for choosing the system parameters that allow the economic modes of spacecraft stabilization to be ensured. The analytical study results are verified by numerical simulation. It is shown that this technique offering the visualization and convenience of using in the engineering practice provides a good accuracy.

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