Spacecraft thermal control function system health assessment modeling method

The invention relates to a spacecraft thermal control function system health assessment modeling method, which comprises the following steps: a, dividing a spacecraft into different function systems,and performing function system layer modeling according to each function system; b, performing component layer modeling according to each component in each functional system of the spacecraft; c, distributing the health state of each part to different indexes, and carrying out index layer modeling; and d, performing parameter layer modeling according to each index. According to the model constructed by the invention, the testability design and the health assessment are directly associated by the bottom layer parameters; the testability design and the health assessment form a closed-loop relationship, so that the health assessment is associated with the reliability design, the testability design and the health management at the same time, the whole stage and all directions of the health management are integrated, a