In order to solve the obstacle avoidance problem of mobile robot in unknown environments

adopt multisensor information fusion method

through multi-ultrasonic sensors acquire information of obstacles. The input variables and output variables of fuzzy controller are set reasonably. Fuzzing obstacles distance information through fuzzy reasoning

establish fuzzy rules and then defuzzification

to achieve obstacle avoidancs of mobile robot successfully. By constructing model of mobile robot motion

design simulation platform and get experimental results

which shows the algorithm is feasible.