To service the internal payload of communication satellite

according to the main frame structures and main bearing structures of traditional satellite platforms

six kinds of repetitive variable configuration truss-type satellite platform structures is proposed

and the main indexes

including mass

inertia change rate

utilization rate of fairing area

deployed surface area ratio

vibration frequency in folded and deployed state

equipment layout effect and complexity of deployable mechanism

for evaluating the performance of variable configuration satellite platform are put forward. Then the main indexes of those six satellite platform structures are analyzed

the weights of those indexes are obtained by analytic hierarchy process method

and a scheme with better comprehensive performance is selected using fuzzy synthetic evaluation method. The mobility of the deployable mechanism of the optimal scheme is 1. The satellite platform structure of the optimal scheme is detailed designed

and a prototype is manufactured to demonstrate the process of variable configuration.