An odor source search algorithm employing multi-robots with limited space perception in a turbulence environment is presented. In this algorithm, an approximate expression of the inferred position of the odor source is established, and the moving directions of robots are given by minimization of a free energy separately. The robots are coordinated with sharing their path each other. An internal temperature allows active control on the exploration/exploitation
balance during the search. Simulation results show the effectiveness of the proposed method.