It is a fact that the approximation techniques, such as neural networks (NNs) or fuzzy logic systems (FLSs), can be used to model unknown nonlinear functions, which simplifies the design process of controllers to some extent. Hence, the attention on the adaptive NN and FLS control has been raised in recent years. A robust adaptive fuzzy control (AFC) problem of nonlinear systems is considered via small-gain and backstepping methods in [15] where the burdensome computation is lightened and the singularity issue is avoided. Two indirect AFC algorithms are derived for uncertain multi-input multi-output (MIMO) systems in [16], and the proposed adaptive controller relaxes the requirement of bounding parameter and does not depend on any parameter initialization conditions. In [17], a direct AFC method is discussed for strict-feedback systems and the presented controller only contains one adaptive parameter. An AFC technique is studied for non-strict feedback systems by a new scheme called variable separation in [18]. [19] and [20] focus on the adaptive control problems for non-strict-feedback stochastic nonlinear systems via NNs and FLSs, respectively. It is the first time that the restrictive conditions in [19] and [20] on unknown nonlinear functions are removed and the adaptive state-feedback controller and observer are designed in [21]. The direct AFC is applied to an under-actuated autonomous underwater vehicle, and a verticalplane trajectory tracking controller is designed in [22]. In [23], the decentralized adaptive state estimator is investigated for cyber-physical systems based on linear matrix inequality (LMI), and the proposed scheme is applied to the power network system. In [24]- [26], a new sufficient condition of the finite-time stability is provided with the aid of NNs or FLSs.