Yang Yekai, Niu Yugang, Zhang Zhina
Key Laboratory of Advanced Control and Optimization for Chemical Process (East China University of Science and Technology), Ministry of Education, Shanghai, 200237, China.
Key Laboratory of Advanced Control and Optimization for Chemical Process (East China University of Science and Technology), Ministry of Education, Shanghai, 200237, China.
ISA Trans. 2021 Apr;110:53-62. doi: 10.1016/j.isatra.2020.10.035. Epub 2020 Oct 16.
This paper addresses the issue of sliding mode control(SMC) for a class of interval type-2(IT2) fuzzy system subject to the fading channel. For relieving the transmission burden, a dynamic event-triggered mechanism is introduced to determine the transmission of the measurement signals via the sensor-to-controller(S/C) channel. In the communication channel, the transmitted signal may suffer from fading in wireless communication networks. By means of known bounds of the membership functions (MFs) in IT2 fuzzy model, both the fuzzy state observer and the fuzzy SMC law are designed to ensure the reachability of the sliding mode dynamics. Meanwhile, stability conditions involving the fading parameter are obtained to guarantee that the input-to-state practical stability in mean square of the closed-loop systems. Finally, the proposed control scheme under the fading communication is verified by virtue of the numerical simulation and the tunnel diode circuit.
本文研究了一类受衰落信道影响的区间二型（IT2）模糊系统的滑模控制（SMC）问题。为减轻传输负担，引入了一种动态事件触发机制，以确定测量信号通过传感器到控制器（S/C）通道的传输。在通信通道中，传输信号可能会在无线通信网络中遭受衰落。借助IT2模糊模型中隶属函数（MFs）的已知边界，设计了模糊状态观测器和模糊SMC律，以确保滑模动态的可达性。同时，获得了涉及衰落参数的稳定性条件，以保证闭环系统的输入到状态均方实际稳定性。最后，通过数值模拟和隧道二极管电路验证了衰落通信下所提出的控制方案。
