In this paper, a novel Type–2T-S fuzzy control scheme is proposed for a class of nonlinear systems with uncertain parameters. In this scheme, the fuzzy controller with biological characteristics is firstly constructed by taking the niche equality index function as the consequent of type-2 fuzzy rules, which combines the adaptive characteristics of biological evolution with type-2 fuzzy control. Then, the gradient descent method is used to optimize the parameters of the consequent and adaptive laws are obtained. Furthermore, the stability and convergence of the system are analyzed. Finally, the simulation results from an example show the effectiveness of the proposed method. Obviously, the proposed method is better than the Type-1. This method can reflect the organism being adaptive, self-development ability, the degree of development, and the utilization of biological environment (i.e., a physical background of fuzzy control is given).

本文针对一类不确定参数的非线性系统，提出了一种新颖的Type-2T-S模糊控制方案。在该方案中，首先以生态位等式指标函数为第二类模糊规则的结果，构造了具有生物特征的模糊控制器，将生物进化的自适应特性与第二类模糊控制相结合。然后，使用梯度下降法对结果的参数进行优化，得到自适应定律。此外，分析了系统的稳定性和收敛性。最后，通过实例仿真结果表明了该方法的有效性。显然，所提出的方法优于Type-1。这种方法可以反映生物体的适应能力，自我发展能力，发展程度，