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arXiv 1306.1486math.OCcs.SYeess.SYmath.CO
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线性时变系统的强结构可控性与可观测性

Strong Structural Controllability and Observability of Linear Time-Varying Systems

University of the Federal Armed Forces Munich(德国联邦国防军慕尼黑大学)

Gunther Reissig, Christoph Hartung, Ferdinand Svaricek

AI总结:

本文研究了系数矩阵非精确已知的连续和离散时间系统,基于非零模式特性,推导了保证可控性和可观测性的条件,发现时变离散系统与时不变系统条件一致,而连续时间系统条件更严格。

摘要:

本文考虑连续时间系统x'(t) = A(t)x(t) + B(t)u(t),y(t) = C(t)x(t) + D(t)u(t),以及离散时间系统x(t+1) = A(t)x(t) + B(t)u(t),y(t) = C(t)x(t) + D(t)u(t),其中系数矩阵A、B、C和D不完全已知。更确切地说,仅知道系数矩阵中的非零模式,即非零元素的位置。本文分别刻画了保证所有非零时间函数在模式定义的矩阵位置上可控性和可观测性的模式,扩展了Mayeda和Yamada对时不变系统的结果。结果表明,当底层时间区间足够长时,时不变和时变离散系统的模式条件一致。相比之下,时变连续时间系统的模式条件比时不变情况更严格。

英文摘要:

In this note we consider continuous-time systems x'(t) = A(t) x(t) + B(t) u(t), y(t) = C(t) x(t) + D(t) u(t), as well as discrete-time systems x(t+1) = A(t) x(t) + B(t) u(t), y(t) = C(t) x(t) + D(t) u(t) whose coefficient matrices A, B, C and D are not exactly known. More precisely, all that is known about the systems is their nonzero pattern, i.e., the locations of the nonzero entries in the coefficient matrices. We characterize the patterns that guarantee controllability and observability, respectively, for all choices of nonzero time functions at the matrix positions defined by the pattern, which extends a result by Mayeda and Yamada for time-invariant systems. As it turns out, the conditions on the patterns for time-invariant and for time-varying discrete-time systems coincide, provided that the underlying time interval is sufficiently long. In contrast, the conditions for time-varying continuous-time systems are more restrictive than in the time-invariant case.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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