CAJ | 학술논문

研究了一类带有参数不确定性模糊T-S系统的状态反馈保成本控制问题。通过使用阶梯隶属度函数来近似模糊模型和控制器的隶属度函数，应用 Lyapunov 稳定性理论，得到了一组新的隶属度函数相关的系统渐近稳定充分条件，该条件可用线性矩阵不等式(LMIs)表示。最后通过仿真验证了该方法的有效性，结果表明，通过取得较小的阶梯宽度，系统可以具有更小的保守性和更好的动态性能。
연구료일류대유삼수불학정성모호T-S계통적상태반궤보성본공제문제。통과사용계제대속도함수래근사모호모형화공제기적대속도함수，응용 Lyapunov 은정성이론，득도료일조신적대속도함수상관적계통점근은정충분조건，해조건가용선성구진불등식(LMIs)표시。최후통과방진험증료해방법적유효성，결과표명，통과취득교소적계제관도，계통가이구유경소적보수성화경호적동태성능。
Guaranteed cost control via memory-less feedback controllers for a class of T-S fuzzy systems with parameter uncertainties has been studied in this paper. Staircase membership functions have been introduced to approximate the continuous membership functions of both of the fuzzy models and the fuzzy controllers. By using Lyapunov stability theory, a set of new LMIs sufficient conditions which can guarantee the stability of the closed-loop system have been derived. The effectiveness of the proposed method is demonstrated in the simulation results. By using a smaller staircase width, the less conservativeness and better performance can be gained for the system.