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Updated: Sep 10, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

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基于估计器的非线性系统的第二阶梯滑动模式控制设计,输入延迟不明

Jinlin Sun, Mengyi Zhang, Li Ma

    IEEE transactions on cybernetics
    |August 26, 2025
    PubMed
    概括

    这项研究引入了一种新型的第二阶滑动模式 (SOSM) 控制器,用于具有未知的输入延迟和不确定性的非线性系统. 新的控制器提高了稳定性和性能,

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    In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
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    Second Order systems I01:20

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    A servo system exemplifies a second-order system, featuring a proportional controller and load elements that ensure the output position aligns with the input position. The relationship between these components is described by a second-order differential equation. Applying the Laplace transform under zero initial conditions yields the transfer function, showing how inputs are converted to outputs in the system.
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