In this paper a concise overview of the work that has been done by various researchers in the area of type-2 fuzzy logic is analyzed and discussed. Type-2 fuzzy systems have been widely applied in the fields of intelligent control, pattern recognition and classification, among others. The overview mainly focuses on past, present and future trends of type-2 fuzzy logic applications. Of utmost importance is the last part, outlining possible areas of applied research in type-2 FL in the future. The major contribution of the paper is briefing of the most relevant work in the area of type-2 fuzzy logic, including its theoretical and practical implications. As well as envisioning possible future works and trends in this area of research. We believe that this paper will provide a good platform for people interested in this area for their future research work.

在本文中，简要分析并讨论了各种研究人员在类型2模糊逻辑领域所做的工作。类型2模糊系统已广泛应用于智能控制，模式识别和分类等领域。概述主要集中在类型2模糊逻辑应用程序的过去，现在和将来的趋势。最重要的是最后一部分，概述了未来2型FL应用研究的可能领域。本文的主要贡献是简要介绍了类型2模糊逻辑领域中最相关的工作，包括其理论和实践意义。以及展望该研究领域中可能的未来工作和趋势。