摘要
针对一类具有介质访问约束和信号量化的网络化控制系统动态输出反馈控制问题,考虑介质访问约束和信号量化的影响,提出一种具有介质访问约束的网络化控制系统控制策略。采用对数量化器对控制输出信号进行量化,将信号量化误差处理为扇形有界的不确定性,并根据通信介质随机访问机制将系统建模为离散时间马尔可夫跳变系统;借助李雅普诺夫稳定性理论和线性矩阵不等式技术推导出系统稳定的充分条件,在此基础上设计动态输出反馈控制器,使网络化系统渐近稳定;最后,通过仿真算例对文中所提策略的正确性和有效性进行验证。结果表明,文中设计的控制器可使系统快速达到稳定状态,且具有良好的动态性能。
Aiming at the problem of dynamic output feedback control for a class of networked control systems with medium access constraints and signal quantization,considering the influence of medium access constraints and signal quantization,a control strategy for networked control system with medium access constraints was proposed.the control output signal was quantized by logarithmic quantizer,and the quantization error was treated as sector bounded uncertainty.According to the random access mechanism of communication medium,the networked system was modeled as the discrete-time Markov jump system.In such a framework,the sufficient conditions of system stability were derived by means of Lyapunov stability theory and linear matrix inequality technique,and a dynamic output feedback controller was designed,which guarantees the networked systems asymptotically stable.Finally,a simulation example was given to verify the correctness and effectiveness of the proposed strategy.The results show that the controller designed in this paper can make the system reach stable status quickly,and has good dynamic performance.
作者
祝超群
党泽坤
ZHU Chaoqun;DANG Zekun(School of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Gansu Advanced Control for Industrial Processes,Lanzhou University of Technology,Lanzhou 730050,China;National Demonstration Center for Experimental Electrical and Control Engineering Education,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《安徽工业大学学报（自然科学版）》
CAS
2021年第1期67-75,共9页
Journal of Anhui University of Technology（Natural Science）
基金
国家自然科学基金项目(61563031,61863026)
甘肃省高等学校产业支撑引导项目(2019C-05)
甘肃省工业过程先进控制重点实验室开放基金项目(2019KFJJ03)。
关键词
网络化控制系统
介质访问约束
对数量化器
动态输出反馈
networked control system
medium access constraints
logarithmic quantizer
dynamic output feedback
