General routine of suppressing single vibration mode by multi-DOF tuned mass damper: Application of three-DOF

Ma, Wenshuo; Yang, Yiqing; Yu, Juebang

doi:10.1016/j.ymssp.2018.11.010

Cited by 35 publications

(9 citation statements)

References 27 publications

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“…A possible solution to address this issue consists of adding a notch filter at the location of the internal resonances [14,6]. Another way is to passively damp the spurious resonance using tuned mass dampers [15][16][17] or dynamic vibration absorbers [18]. A major drawback of these solutions is that they require a good knowledge of the plant and the location of the spurious resonance.…”

Section: Introductionmentioning

confidence: 99%

Virtual sensor fusion for high precision control

Verma

Dehaeze

Zhao

et al. 2021

Mechanical Systems and Signal Processing

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High performance control requires high loop gain and large control bandwidth. However, the spurious resonances at the higher frequencies can limit the performance of such type of systems. This drawback can be overcome by using sensor fusion technique. In sensor fusion, two or more sensors are combined in synergy such that good performance is achieved at lower frequencies while ensuring robustness of the system at higher frequencies. This paper presents a new technique, termed as ''virtual sensor fusion", in which only one of the sensors is physically installed on the system while the other sensor is simulated virtually. The virtual sensor is selected based on desired high frequency response. The effectiveness of the proposed technique is demonstrated numerically for a case of active seismic isolation. A robustness analysis of virtual sensor fusion is also carried out in order to study its stability in the presence of spurious resonances. Finally, the technique is experimentally verified on active isolation of pendulum system from ground motion. The results obtained demonstrate good isolation performance at lower frequencies and robustness to plant uncertainties (spurious resonances) at higher frequencies. This technique can be effectively used for high precision control of sensitive instruments.

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Section: Introductionmentioning

confidence: 99%

Virtual sensor fusion for high precision control

Verma

Dehaeze

Zhao

et al. 2021

Mechanical Systems and Signal Processing

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“…Further study leads to passive optimization and active control algorithm design along with optimization of sensors placement, type, and count. According to Ma et al (2019), at most three of all the six spatial DoFs of the damping mass are available for controlling the single translational vibration mode of the main structure. Therefore, the 2D simulation model of the robot arm and 3-DoF absorber is being used to optimize properties of such an absorber.…”

Section: Introductionmentioning

confidence: 99%

“…One of the main questions for an n -DoF mechanical resonator is whether to design n single-DoF absorbers ( n autonomous active spring–mass systems) or one n -DoF absorber with n (or more) active spring elements. From the recent literature, let us point to the passive multi-DoF tuned absorber investigated in Ma et al (2019) where 2-DoF and 3-DoF mass absorbers are tested on the experimental demonstrator. This study supports the theory that the passive multi-DoF absorber is more capable of vibration suppression than multiple single-DoF absorbers with equal mass.…”

Section: Introductionmentioning

confidence: 99%

Mechatronic robot arm with active vibration absorbers

Kraus

Šika

Beneš

et al. 2020

Journal of Vibration and Control

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Serial robots are typically able to cover large workspace, but their mass/stiffness ratio does not allow combining high accuracy and high dynamic of the end effector operations. Widely spread usage of serial robots, even for tasks such as drilling, leads to high accuracy demands through its workspace. Absolute measurement of the end point for position feedback can be challenging due to objects or even a workpiece in the workspace. Moreover, inbuilt motors of the serial robot cannot response in the frequency range high enough as vibration of the end point. Instead, an additional spring–mass system is attached to the robot to suppress vibrations. The narrow frequency range of a passive dynamic absorber can be extended with active elements between the robot and absorber. An active approach is also necessary because of robots eigenfrequencies and eigenmodes variability. The study deals with a planar flexible robot equipped with a three-degree-of-freedom planar active absorber. The absorber is tuned passively to one value of multiple eigenfrequency. The linear-quadratic regulator control with a state observer has been designed as an active absorber control algorithm. Feedback inputs are absorber body acceleration, end effector acceleration, and relative motions in three absorber actuators realized by voice coils. The end effector vibration suppression along the robot trajectory is achieved using gain scheduling of local controller’s outputs.

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“…Jang et al described a novel method for selecting the parameters of a 2DOFs TMD with translational and rotational degrees of freedom [29]. Ma and Yang et al presented a design of a multi-DOFs TMD to alleviate the dominant mode of the work piece/fixture assembly in milling [30][31][32].As the DOF increases, by only selecting the appropriate DOFs and tuned frequencies, the TMDs can reach the best vibration control of the primary structure. Therefore, designing a TMD with expected DOFs and natural frequencies becomes an urgent problem.…”

mentioning

confidence: 99%

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confidence: 99%

A Multi-Degree of Freedom Tuned Mass Damper Design for Vibration Mitigation of a Suspension Bridge

et al. 2020

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This paper proposes a synthetic approach to design and implement a two-degree of freedom tuned mass damper (2DOFs TMD), aimed at damping bending and torsional modes of bridge decks (it can also be applied to other types of bridges like cable-stayed bridges to realize the energy dissipation). For verifying the effectiveness of the concept model, we cast the parameter optimization of the 2DOFs TMDs conceptual model as a control problem with decentralized static output feedback for minimizing the response of the bridge deck. For designing the expected modes of the 2DOFs TMDs, the graphical approach was introduced to arrange flexible beams properly according to the exact constraints. Based on the optimized frequency ratios, the dimensions of 2DOF TMDs are determined by the compliance matrix method. Finally, the mitigation effect was illustrated and verified by an experimental test on the suspension bridge mock-up. The results showed that the 2DOFs TMD is an effective structural response mitigation device used to mitigate the response of suspension bridges. It was also observed that based on the proposed synthetic approach, 2DOFs TMD parameters can be effectively designed to realize the target modes control.

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General routine of suppressing single vibration mode by multi-DOF tuned mass damper: Application of three-DOF

Cited by 35 publications

References 27 publications

Virtual sensor fusion for high precision control

Virtual sensor fusion for high precision control

Mechatronic robot arm with active vibration absorbers

A Multi-Degree of Freedom Tuned Mass Damper Design for Vibration Mitigation of a Suspension Bridge

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