The Method of State Space Description for Flight Process of Manned Spacecraft

Abstract

As is well known, manned spacecraft has the following characteristics: complicated system configuration, large numbers of parameters, multi-mode controls, complex mission operations, rapid state transitions, etc. Facing this kind of spacecraft, how to describe and express its flight process in order to predict and monitor its states and then to diagnose its failures in a space mission is a difficult problem, which is the basis and the precondition of implementing the flight control on spacecraft. The idea and method of state space description for flight process of manned spacecraft was introduced to solve this problem. Firstly, the basic idea of state space description for flight process of manned spacecraft was introduced. Secondly, the universal and discrete state space model of manned spacecraft was built, and the orthogonal decomposition and the six-layer decomposition framework of the state space were discussed. Thirdly, the types, the characteristics and the essentials of state transition function and state transition matrix were probed into, and the general form of state transition matrix for manned spacecraft was given. Finally, the application of this method and several important conclusions were presented. Keyword: state space description, state space model, state transition function, state transition matrix, manned spacecraft, flight process