CAJ | 학술논문

设计了一类不确定非线性系统模糊自适应输出跟踪控制器。首先将一个时变参数引入到规则前件的高斯型隶属度函数中，形成一组带有时变参数的模糊规则，通过时变参数的变化改变高斯型隶属度函数的中心和宽度，进而改变原Mamdani型模糊逻辑系统的输出，形成新的带有时变参数的模糊逻辑系统。然后以这种改造后的模糊逻辑系统逼近系统的未知非线性项，构造时变参数和逼近精度的自适应律，设计相应的自适应输出跟踪控制器。这种方法的优越性在于充分利用原有的有限数目的模糊规则，合成具有较少自适应律的模糊自适应输出跟踪控制器。最后，通过Duffing的仿真算例验证了本文提出方法的可行性和有效性。
설계료일류불학정비선성계통모호자괄응수출근종공제기。수선장일개시변삼수인입도규칙전건적고사형대속도함수중，형성일조대유시변삼수적모호규칙，통과시변삼수적변화개변고사형대속도함수적중심화관도，진이개변원Mamdani형모호라집계통적수출，형성신적대유시변삼수적모호라집계통。연후이저충개조후적모호라집계통핍근계통적미지비선성항，구조시변삼수화핍근정도적자괄응률，설계상응적자괄응수출근종공제기。저충방법적우월성재우충분이용원유적유한수목적모호규칙，합성구유교소자괄응률적모호자괄응수출근종공제기。최후，통과Duffing적방진산례험증료본문제출방법적가행성화유효성。
In this paper, a fuzzy adaptive output tracking controller is designed for a class of uncertain nonlinear systems to track a given sign.First, a time-varying parameter is introduced into the Gaussian membership functions of the rule antecedent, so that a new set of fuzzy rules with a time-varying parame-ter is given.This implies that the update motion of time-varying parameter changes not only the centers and widths of Gaussian membership functions, but also the output of the previous Mamdani fuzzy logic system, and thus a new fuzzy logic system with a time-varying parameter is synthesized.And then the modified fuzzy logic system can be used to approximate the unknown nonlinear term of the system, and the adaptive laws of time-varying parameter and the estimated values of the fuzzy approximate accuracy can be constructed, accordingly the fuzzy adaptive output tracking controller of the system can be synthe-sized.The advantage of the proposed method in this paper is that by the full use of existing limited num-ber of fuzzy rules, the fuzzy adaptive output tracking controller can be synthesized with more fewer adap-tive laws.Finally, the Duffing system′s simulation example demonstrates that the proposed method in this paper is feasible and effective.