摘要
动态输出反馈D-保性能控制是线性系统的重要控制方法。针对一类由动态输出反馈D-保性能控制器构成的闭环线性系统,提出了用硬件冗余方式解决系统传感器信号增益误差问题。考虑传感器信号增益误差模型,提出了传感器信号增益误差的容忍区间,容忍因子和硬件冗余度的概念。通过求解具有线性矩阵不等式(linear matrix inequality,LMI)约束的优化问题,给出了传感器信号增益误差的容忍区间,容忍因子和硬件冗余度的求解算法。工程师可以根据传感器各通道硬件冗余度的大小进行传感器的硬件冗余设计。一个某型飞机着陆过程的实例仿真说明了所提方法的有效性。
Dynamic output-feedback D-guaranteed cost control is an important method for linear control system. For a class of closed- loop linear systems with dynamic output-feedback D -guaranteed cost controllers, hardware redundancy mode is proposed for sensor- signal gain error. Considering mathematical model of sensor - signal gain error, we present concepts of sensor-signal gain - error toler- ate interval, tolerate factor and hardware redundancy rate. An algorithm is given to determine the tolerate interval, the tolerate factor and the hardware redundancy rate via optimization problems with linear matrix inequality （LMI） constraints. Engineers can design the sensor hardware redundancy according to the hardware redundancy rate of each sensor channel. An example of a plane＇s landing process is also given to illustrate the effectiveness of the proposed method.
出处
《控制工程》
CSCD
北大核心
2013年第4期676-679,683,共5页
Control Engineering of China
基金
辽宁省自然科学基金(20120217)
辽宁省教育厅一般项目(L2011236)
关键词
可靠控制
硬件冗余度
线性矩阵不等式
极点配置
保性能控制
reliable control
hardware redundancy
linear matrix inequality （LMI）
pole placement
guaranteed cost control
