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研究具有丢包的量化反馈系统的鲁棒预测控制器设计问题。所考虑的系统采用对数量化器,并给出了量化密度选择方法;网络中的丢包现象采用Bernoulli过程描述。主要目的是对控制信号进行量化,同时考虑量化后数据在网络传输过程中的丢包问题。设计了基于线性矩阵不等式(LMI)方法的鲁棒预测控制算法求解控制器,使得闭环系统渐近稳定,并满足一定的预测性能指标。最后通过仿真研究验证了所提出方法的有效性。
The robust predictive controller design problem of a quantized feedback system with packet loss is studied. The system considered is a logarithmic quantizer, and gives a method to choose the quantization density. The phenomenon of packet loss in the network is described by the Bernoulli process. The main purpose is to quantify the control signal, taking into account the packet loss problem of the quantized data in the network transmission process. A robust predictive control algorithm based on Linear Matrix Inequality (LMI) is proposed to solve the controller, which makes the closed-loop system asymptotically stable and satisfies certain predictive performance. Finally, the simulation results show the effectiveness of the proposed method.