Based on fuzzy logic systems and prescribed performance technology, this paper investigated the stable tracking problem of a class of nonlinear systems with unknown dead-zone inputs. Firstly, the original system is transformed into an equivalent system. Then, a Nussbaum-type function is added in the predefined performance controller to estimate the unknown control direction, and the boundedness of all signals in the closed-loop system is guaranteed. In addition, tracking errors will always remain within the prescribed performance boundaries. Finally, a comparative simulation example shows the effectiveness of the method proposed in this paper.

中文翻译：

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具有规定性能和未知死区输入的一类非线性系统的模糊自适应控制

基于模糊逻辑系统和规定的性能技术，研究了一类未知死区输入的非线性系统的稳定跟踪问题。首先，将原始系统转换为等效系统。然后，在预定义的性能控制器中添加一个Nussbaum型函数，以估计未知的控制方向，从而确保闭环系统中所有信号的有界性。另外，跟踪误差将始终保持在规定的性能范围内。最后，通过一个比较仿真实例验证了本文提出方法的有效性。