Two-delay robust digital control and its applications-avoiding the problem on unstable limiting zeros
Two-delay robust digital control and its applications-avoiding the problem on unstable limiting zeros
复制标题
二延迟鲁棒数字控制及其应用——避免极限零点不稳定问题
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
H. Numasato
中科院分区：
文献类型：
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作者：
T. Mita;Y. Chida;Y. Kaku;H. Numasato
在线性控制系统的设计中，不稳定零点的存在使许多控制系统的构造变得困难。当采用通常的数字控制方案时，即使连续时间对象是最小相位，由于极限零点的存在，离散时间模型中也会出现不稳定的零点。为了避免这种不稳定的零点问题，提出了两种新的数字控制方案，即双延迟输出控制和双延迟输入控制。证明了这些控制系统没有有限个零点。利用双时滞输出控制，设计了渐近逆系统、极点可配置未知输入观测器和具有环路恢复特性的输出反馈控制器。利用双时滞输入控制，设计了可调零控制系统和模型匹配控制系统。>；
In the design of linear control systems, the existence of unstable zeros makes it difficult to construct many control systems. When the usual digital control scheme is used, unstable zeros appear in the discrete-time model due to the existence of limiting zeros even though the continuous-time plant is minimal phase. To avoid this unstable zero problem, two new digital control schemes, called two-delay output control and two-delay input control, are proposed. These control systems are proved to have no finite zeros. Asymptotic inverse systems, pole assignable unknown input observers, and output feedback controllers having the LTR (loop transfer recovery) property are developed using the two-delay output control. Zero assignable control systems and model matching control systems are developed using the two-delay input control. >