arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.03423eess.SYcs.SY
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具有滞环反馈的线性动态系统的稳定性

On stability of linear dynamic systems with hysteresis feedback

Michael Ruderman

摘要:

研究了具有反馈滞环的线性动态系统的稳定性。虽然无记忆非线性的绝对稳定性(称为Lure问题)可以通过众所周知的圆准则来证明,但多值速率无关滞后对反馈系统构成了重大挑战,特别是对于证明收敛到相应的平衡状态。考虑了顺时针输入输出滞环的耗散行为,在两种边界情况下,在反转周期处有能量损失。对于最大滞回线的上边界情形,给出了闭环系统的等效变换。这允许应用绝对稳定性的圆准则。不变集作为滞后的后果进行了讨论。给出了几个数值例子,包括一个反馈控制的双质量谐振子,该谐振子具有一个稳定极点和一个不稳定极点。

英文摘要:

The stability of linear dynamic systems with hysteresis in feedback is considered. While the absolute stability for memoryless nonlinearities (known as Lure's problem) can be proved by the well-known circle criterion, the multivalued rate-independent hysteresis poses significant challenges for feedback systems, especially for proof of convergence to an equilibrium state correspondingly set. The dissipative behavior of clockwise input-output hysteresis is considered with two boundary cases of energy losses at reversal cycles. For upper boundary cases of maximal (parallelogram shape) hysteresis loop, an equivalent transformation of the closed-loop system is provided. This allows for the application of the circle criterion of absolute stability. Invariant sets as a consequence of hysteresis are discussed. Several numerical examples are demonstrated, including a feedback-controlled double-mass harmonic oscillator with hysteresis and one stable and one unstable poles configuration.

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