Active suppression of milling chatter with LMI-based robust controller and electromagnetic actuator

Li, Xiaohu; Wan, Shaoke; Yuan, Jiansheng; Yin, Yanjing; Hong, Jun

doi:10.1016/j.jmatprotec.2021.117238

Cited by 22 publications

(4 citation statements)

References 33 publications

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“…Based on the structural stiffness of thin-walled components, modal finite element analysis, and eigensensitivity analysis, Tian et al [3] determined and optimized the distribution of allowances during semi-precision machining of thin-walled workpieces. Li et al [4] introduced a discrete output feedback robust controller based on Linear Matrix Inequality (LMI) to suppress chatter by applying the necessary active control force by using electromagnetic actuators. Yao et al [5] In actual machining, blade vibration (chatter) is prone to occur, which affects the quality of machining.…”

Section: Introductionmentioning

confidence: 99%

Study of optimization of blade non-uniform allowance process and chatter stability domain

Wu,

Han,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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In addressing the phenomenon of chatter during the machining of thin-walled components, a machining strategy involving the implementation of a continuous non-uniform toolpath has been proposed as a remedy for chatter suppression. The methodology commences with a meticulous determination of machining allowances, accomplished by utilizing fitting functions. Subsequently, the stiffness coefficients and natural frequencies inherent to the workpiece-tool system are extracted through modal analysis. A stability lobes diagram is formulated, employing the principles of regenerative chatter analysis. This diagram encompasses both uniform toolpath scenarios and non-uniform continuous toolpath scenarios, with the latter established via the least squares method. The resultant stability lobes diagram effectively delineates the boundaries within which chatter remains stable, under varying depths of cut. The stability lobes diagrams substantiate the effectiveness of the non-uniform continuous toolpath constructed via the least squares method in significantly augmenting the inherent stiffness coefficient of the workpiece-tool system, thereby mitigating chatter. This approach serves as a valuable guide for the manufacturing of intricate curved thin-walled components.

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Section: Introductionmentioning

confidence: 99%

Study of optimization of blade non-uniform allowance process and chatter stability domain

Wu,

Han,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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“…Tian W et al [3] determined and optimized the allowance distribution state in the semi-finishing processing of thin-walled workpieces based on eigenvalue sensitivity analysis methods. Li X et al [4,5] proposed a discrete output feedback robust controller based on linear matrix inequality (LMI), which utilized the electromagnetic actuator to exert the required active control force to suppress chatter. S. Sun and Y. Altintas [6] proposed a geometric smoothing algorithm for surface five-axis machining, mainly realized by smoothing the sharp points through multi-order derivatives.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation study on chatter stability region of an integral impeller with continuous non-uniform allowance

Wu,

Han,

Chen

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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Aiming at the chatter problem in the finishing processes of the integral impellers, a process optimization method of continuous non-uniform allowance chatter suppression based on the least square method was proposed: The least square method was used to fit the non-uniform allowance modeling. The stiffness coefficients and natural frequencies of the workpiece-tool system were obtained by modal analysis: According to the principles of regenerative chatter analysis, the limit deep lobe graphs of uniform and non-uniform continuous margin blades in the chatter stability region are established. It is proved by the stable lobe diagram that the non-uniform allowance blade based on the least square method can effectively improve the stiffness coefficient and natural frequency of the work-tool system. Finally, the effectiveness of the analysis is proved by the milling experiment of the integral impeller. It has a significant effect on chatter suppression and has an effective guiding role in practical integral impeller manufacturing.

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“…Active chatter suppression for milling process with sliding mode control and an electromagnetic actuator is also investigated by wan et al [22]. A discrete output feedback robust controller based on linear matrix inequality is developed for the chatter suppression in milling using an electromagnetic actuator [23]. Fallah and Motakef-Imani investigated the active control of a boring bar using an electrodynamic shaker [24].…”

Section: Introductionmentioning

confidence: 99%

Chatter Stability Improvement of a Slender Milling Tool via a Dynamics Variation Mechanism

Hayati

Golmohammadi²,

Valitabar³

et al. 2023

Preprint

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In this study, a milling tool with variable mass and stiffness is developed for chatter reduction. The proposed milling tool is hollow with a solid core threaded inside it. As the core is screwed in or out of the tool body, the equal mass and stiffness of the tool are changed. Therefore, the tool's frequency response function (FRF) is changed to affect the stability lobe diagram (SLD) position. Moving the SLDs can stabilize an unstable cutting process. With respect to the FRFs obtained from modal test, the idea is proven using an experimental and analytical approach. The optimum core position for every spindle speed is also presented. The developed tool stability is then investigated in a realistic cutting condition. The cutting process sound analysis and surface finish visual inspection results reveal the performance of the proposed system in chatter reduction of a slender milling tool.

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Active suppression of milling chatter with LMI-based robust controller and electromagnetic actuator

Cited by 22 publications

References 33 publications

Study of optimization of blade non-uniform allowance process and chatter stability domain

Study of optimization of blade non-uniform allowance process and chatter stability domain

Experimental and simulation study on chatter stability region of an integral impeller with continuous non-uniform allowance

Chatter Stability Improvement of a Slender Milling Tool via a Dynamics Variation Mechanism

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