Fuzzy Control (FC) has supplanted conventional technologies in many applications. One major feature of fuzzy logic is its ability to express the amount of ambiguity in human thinking. Thus, when the mathematical model of the process does not exist, or exists but with uncertainties, FC is an alternative way to deal with the unknown process. In this paper, in order to eliminate the chattering problem, a fuzzy inference engine is used to remove the discontinuity of the sign function of the SMC at the reaching phase. Combining the FC with the adaptive SMC (18) results in developing the proposed FASMC methodology. The main advantage of this method is that the robust behavior of the system is guaranteed. The second advantage of the proposed FASMC is that the performance of the system in the sense of removing chattering is improved in comparison with the same SMC technique without using FC.