Novel Sliding Mode Vibration Controller With Simple Model-Free Design and Compensation for Actuator’s Uncertainty

Yonezawa, Ansei; Kajiwara, Itsuro; Yonezawa, Heisei

doi:10.1109/access.2020.3047810

Cited by 10 publications

(10 citation statements)

References 47 publications

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“…A virtual structure enables model-free vibration control of the actual controlled object. According to the previous studies [23][24][25][26][27], a two-degree-of-freedom (2-DOF) model in which a SDOF virtual structure is inserted between the actuator and the actual controlled object is considered (Fig. 3).…”

Section: Control System Design Using a Virtual Structurementioning

confidence: 99%

“…The controller designed in this way is denoted as K2. Previous studies [23][24][25][26][27] did not include a filter which focuses on the natural frequency of the proof-mass actuator in their model-free control system design. This combination of the notch filter and the model-free controller based on virtual structure is the technical novelty in this paper.…”

Section: Application Of a Notch Filter To Design A Model-free Control...mentioning

confidence: 99%

“…As mentioned above, the design process of the control system using most of the conventional model-free methods is complicated and requires a lot of time and preparation. On the other hand, a new approach to realize model-free vibration control based on the idea of a virtual structure was proposed by Yonezawa et al [23][24][25][26][27] This innovative method gives a model-free controller in a simpler manner without a complicated implementation process. The basic idea is to insert a properly designed single degree of freedom (SDOF) vibration model of a virtual structure between the proofmass actuator and the actual controlled object.…”

Section: Introductionmentioning

confidence: 99%

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Stability Improvement of Model-Free Control Based on a Virtual Structure Against the Resonance of a Proof-Mass Actuator

Sato

Yonezawa

et al. 2022

J. Vib. Eng. Technol.

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Purpose This study improves the robustness of the model-free controller based on a virtual structure. Additionally, the adverse interference between the proof-mass actuator resonance and a controlled object is investigated as it is not clarified in the previous studies. Methods and Results A virtual structure modeled as a SDOF system was inserted between the actuator and the actual controlled object. This achieved the indirect damping of the actual controlled object and model-free control. Vibration control simulations were conducted for various finite element models with a model-free $${H}_{\infty }$$ H ∞ controller based on a virtual structure. The results demonstrate that the actuator resonance adversely affects the stability of the control system when the controlled object has a mode whose natural frequency is too close to that of the actuator. Therefore, a notch filter was applied to the model-free $${H}_{\infty }$$ H ∞ controller design approach to suppress the resonance without affecting the damping performance. The improved controller with notch filter is more robust to the resonance of the actuator than the previous one. Conclusions The resonance of the proof-mass actuator adversely affects the stability of the control system composed of the previous model-free $${H}_{\infty }$$ H ∞ controller when the low-order vibration mode of the actual controlled object is too close to the natural frequency of the actuator. Introducing a notch filter into the model-free approach based on a virtual structure effectively reduces the negative impact due to the resonance of the actuator and improves the robustness of the control system.

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Section: Control System Design Using a Virtual Structurementioning

confidence: 99%

Section: Application Of a Notch Filter To Design A Model-free Control...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stability Improvement of Model-Free Control Based on a Virtual Structure Against the Resonance of a Proof-Mass Actuator

Sato

Yonezawa

et al. 2022

J. Vib. Eng. Technol.

Self Cite

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“…Moreover, the performance of an actuator can degrade due to long-term use. [44,45] Additionally, it is often that the actuators installed on structures are only periodically inspected/calibrated leading to poor performance. [46] The actuator uncertainty could be associated with instability and poor control performance [44,45] thus, it is crucial to also consider its effect within the simulation process.…”

Section: Introductionmentioning

confidence: 99%

“…[44,45] Additionally, it is often that the actuators installed on structures are only periodically inspected/calibrated leading to poor performance. [46] The actuator uncertainty could be associated with instability and poor control performance [44,45] thus, it is crucial to also consider its effect within the simulation process. This work is structured as follows: Sections 1.1 and 1.2 include an extended review of studies which dealt with parametric and input uncertainty, respectively.…”

Section: Introductionmentioning

confidence: 99%

Robust structural control of a real high‐rise tower equipped with a hybrid mass damper

Koutsoloukas

Nikitas

Aristidou

2022

Structural Design Tall Build

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In this paper, the robust control of a real high-rise tower is studied, using a newly proposed, in the structural control field, Robust Model Predictive Control scheme (RMPC). Two RMPC controllers were designed considering either displacement mitigation (RMPC 1 ) or power consumption efficiency (RMPC 2 ).The two controllers were compared to the benchmark, robustness-wise, H ∞ control scheme to demonstrate their relative performance. A number of stiffness and damping uncertainty scenarios were designed based on a broad study of the relevant literature, in order to estimate the robustness of each of the three controllers. In all scenarios, variable actuator uncertainty of AE5% was introduced. It was found that all controllers are effective in controlling the tower and demonstrate robustness against parametric and actuator uncertainties with different relative merits over each other. Indicatively, when considering root-mean-square (RMS) and peak displacement and acceleration reduction, the H ∞ had an average performance reduction of 24%, the RMPC 1 31% and the RMPC 2 28% against their uncontrolled equivalent.

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Parameter tuning technique for a model-free vibration control system based on a virtual controlled object

Yonezawa

Kajiwara

2022

Mechanical Systems and Signal Processing

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Novel Sliding Mode Vibration Controller With Simple Model-Free Design and Compensation for Actuator’s Uncertainty

Cited by 10 publications

References 47 publications

Stability Improvement of Model-Free Control Based on a Virtual Structure Against the Resonance of a Proof-Mass Actuator

Stability Improvement of Model-Free Control Based on a Virtual Structure Against the Resonance of a Proof-Mass Actuator

Robust structural control of a real high‐rise tower equipped with a hybrid mass damper

Parameter tuning technique for a model-free vibration control system based on a virtual controlled object

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