Iterative Learning-Based Negative Effect Compensation Control of Disturbance to Improve the Disturbance Isolation of System

Li, Xiantao; Wang, Lu; Xia, Xianqi; Liu, Yuzhang; Bao, Zhenan

doi:10.3390/s22093464

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…According to the DOB principle, to ensure robustness, the higher the bandwidth of the low-pass filter, the stronger the disturbance suppression ability [ 30 ]. Because of the existence of dynamic coupling, when disturbance compensation is performed on one DOF, unnecessary inputs can be generated for other DOFs.…”

Section: Methodsmentioning

confidence: 99%

High-Precision Positioning Stage Control Based on a Modified Disturbance Observer

Wang,

Li,

Zhou

et al. 2024

Sensors

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High-precision positioning systems play a crucial role in various industrial applications. This study focuses on improving the performance of a high-precision multi-degrees-of-freedom (DOF) stage. In terms of the controller design, the following two key challenges must be addressed: the cross-decoupling of different DOFs and the impact of external disturbances. To address these problems, a self-tuning approach is proposed for simultaneous decoupling and disturbance suppression. Initially, the stage undergoes static decoupling using a data-based approach, facilitating feedback control for each DOF through single-input, single-output controllers. Addressing dynamic coupling and external disturbance challenges, we introduced a comprehensive evaluation index and a self-tuning multi-input, multi-output disturbance observer. This approach enabled the evaluation and optimization of the disturbance compensation for all DOFs, ensuring optimal positioning accuracy. Finally, we tested the proposed method using a high-precision multi-DOF stage with a real-time control platform. The results demonstrated a significant reduction in the standard deviations of positioning errors in the rx, ry, and z directions by 46%, 58%, and 6%, respectively. The approach used in this study opens avenues for advancements in the design and control of complex multi-DOF systems.

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Section: Methodsmentioning

confidence: 99%

High-Precision Positioning Stage Control Based on a Modified Disturbance Observer

Wang,

Li,

Zhou

et al. 2024

Sensors

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“…Offline iterative control is widely used in automated production [33] in industrial fields such as robot motion planning [34] and process control systems [35]. It optimizes production processes through a pre-set control strategy and automatically adjusts parameters without manual intervention to improve production efficiency and product quality.…”

Section: Introductionmentioning

confidence: 99%

Proposed Feedback-Linearized Integral Sliding Mode Control for an Electro-Hydraulic Servo Material Testing Machine

Sun,

Li,

Tan

et al. 2024

Machines

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High-precision tracking of an electro-hydraulic servo material testing machine’s force control system was achieved using a proposed integral sliding mode control method based on feedback linearization to improve the machine’s force control performance and anti-interference ability. First, the electro-hydraulic servo system’s nonlinear mathematical model was established, and its input–output linearization was realized using differential geometry theory. Second, integral sliding mode control was introduced into the controller and the feedback-linearized integral sliding mode controller was designed. The controller’s stability was proven based on the Lyapunov stability principle. Finally, a simulation model of the electro-hydraulic servo material testing machine’s force control system was established using AMESim/Simulink software. The designed controller was simulated and verified, and the control effects of the system’s different amplitudes and frequency signals were analyzed. The results showed that the feedback-linearized integral sliding mode control algorithm could effectively improve the system’s force tracking accuracy and parameter adaptability, yielding better robustness and a better control effect.

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“…Moreover, NECOD method does not depend on the fixed system model but only on the control frequency of the servo loop. e higher the control frequency, the stronger the disturbance suppression ability of NECOD [28].…”

Section: Introductionmentioning

confidence: 99%

Negative Effect Compensation of Disturbance for High-Precision Voice Coil Fast Steering Mirror

Wang

et al. 2022

Mathematical Problems in Engineering

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In order to further improve the stability of the composite axis aviation photoelectric stabilization platform, a control method of negative effect compensation of disturbance (NECOD) is proposed and applied to the voice-coil fast steering mirror adjusting the optical path of the platform. The experimental results show that the control accuracy and closed-loop bandwidth of the voice-coil fast steering mirror based on NECOD have been greatly improved, while its advantages of large stroke are not possessed by piezoelectric fast mirror. The experimental results of high-frequency turntable and vibration table show that NECOD proposed in this paper has better antidisturbance performance than DOB and ARC, and its parameters are less and easy to adjust. It is proved that the robustness of NECOD is very strong in the presence of 20% parameter perturbation. The final LOS stabilization accuracy experiment shows that the NECOD voice-coil fast steering mirror proposed in this paper fully meets the performance requirements of high-precision aviation photoelectric stabilization platform, and has high practical value for improving the antidisturbance performance of the control system of aviation photoelectric stabilization platform.

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Iterative Learning-Based Negative Effect Compensation Control of Disturbance to Improve the Disturbance Isolation of System

Cited by 4 publications

References 19 publications

High-Precision Positioning Stage Control Based on a Modified Disturbance Observer

High-Precision Positioning Stage Control Based on a Modified Disturbance Observer

Proposed Feedback-Linearized Integral Sliding Mode Control for an Electro-Hydraulic Servo Material Testing Machine

Negative Effect Compensation of Disturbance for High-Precision Voice Coil Fast Steering Mirror

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