Hi Reza Darbanian, it sounds like you want to design a MIMO fuzzy system for a MIMO plant. Take a path-tracking differential drive two-wheeled mobile robot for example, the fuzzy system takes inputs from multiple sensors to generate the output velocities for the left and right wheels.
Article MIMO Fuzzy Control for Autonomous Mobile Robot
You should provide as many details as possible in the explanation field so other researchers have enough information to answer your question meaningfully.
Hi Reza Darbanian, since your building model is a linear system, you can decouple the differential equations using the matrix eigendecomposition technique. Once the system is in canonical form (assuming the system is fully-actuated), then you can design the non-fuzzy feedback control laws fairly easy before progressing to the fuzzy control design based on Mr. Tejas Turakhia