Design and control of a piezoactuated microfeed mechanism for cell injection

Yu, Shuanghe; Xie, Mingyang; Wu, Hongtao; Ma, Jien; Wang, Ruobing; Kang, Shengzheng

doi:10.1007/s00170-019-04515-2

Cited by 16 publications

(10 citation statements)

References 33 publications

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“…The flexure hinge can obtain the maximum displacement magnification and the highest natural frequency to ensure strength. Refer to [27] for the optimal design of BTDAM. Although the mechanical structure of BTDAM is highly complex, 3D printing technology is suitable for rapid prototyping.…”

Section: Mechanical Structure Design Of Cpmmentioning

confidence: 99%

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Precise robust motion control of cell puncture mechanism driven by piezoelectric actuators with fractional-order nonsingular terminal sliding mode control

Xie

et al. 2020

Bio-des. Manuf.

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A novel robust controller is proposed in this study to realize the precise motion control of a cell puncture mechanism (CPM) driven by piezoelectric ceramics (PEAs). The entire dynamic model of CPM is constructed based on the Bouc-Wen model, and the nonlinear part of the dynamic model is optimized locally to facilitate the construction of a robust controller. A model-based, nonlinear robust controller is constructed using time-delay estimation (TDE) and fractional-order nonsingular terminal sliding mode (FONTSM). The proposed controller does not require prior knowledge of unknown disturbances due to its real-time online estimation and compensation of unknown terms by using the TDE technology. The controller also has finite-time convergence and high-precision trajectory tracking capabilities due to FONTSM manifold and fast terminal sliding mode-type reaching law. The stability of the closed-loop system is proved by Lyapunov stability theory. Computer simulation and hardware-in-loop simulation experiments of CPM verify that the proposed controller outperforms traditional terminal sliding mode controllers, such as the integer-order or model-free controller. The proposed controller can also continuously output without chattering and has high control accuracy. Zebrafish embryo is used as a verification target to complete the cell puncture experiment. From the engineering application perspective, the proposed control strategy can be effectively applied in a PEA-driven CPM.

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Section: Mechanical Structure Design Of Cpmmentioning

confidence: 99%

“…In SMC, the displacement error and its derivatives are taken as the current state of the system [27]. The structure of the system continuously changes along with the current state and moves according to the predetermined "sliding mode" state trajectory [28].…”

Section: Introductionmentioning

confidence: 99%

Precise robust motion control of cell puncture mechanism driven by piezoelectric actuators with fractional-order nonsingular terminal sliding mode control

Xie

et al. 2020

Bio-des. Manuf.

Self Cite

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“…Sliding mode control is one of the important discoveries in modern control theory and is an effective tool for solving nonlinear system control problems [15]. Sliding mode control is insensitive to model uncertainty, parameter changes, and external disturbances [16]. Terminal sliding mode (TSM) [17] is proposed to improve the convergence speed of the sliding mode control.…”

Section: •3•mentioning

confidence: 99%

Practical Tracking Control of Piezoelectric Actuators with Time-delay Estimation and Nonsingular Terminal Sliding Mode

Lin

Gu²,

et al. 2020

Preprint

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A novel type of nonlinear robust control strategy is proposed in view of uncertain nonlinear factors, such as hysteresis, creep, and high-frequency vibration, of piezoelectric actuators (PEAs). This strategy can be used for the precise trajectory tracking of PEAs. The Bouc–Wen dynamic model is reasonably simplified to facilitate engineering application. The hysteresis term is summarized as an unknown term to avoid its nonlinear parameter identification. The controller robustness is achieved due to the nonsingular terminal sliding mode control, and the online estimation of unknown disturbances is realized because of the delay estimation technology; thus, no prior knowledge of the unknown boundary of the system is required. The precision robust differentiator is used to estimate the speed and acceleration signals in real time on the basis of the obtained displacement signals. The closed-loop stability of the system is proved by the Lyapunov criterion. Experimental results show that the proposed control strategy performs better than the traditional time-delay estimation control in terms of control accuracy and energy conservation. Therefore, the proposed control strategy can play an important role in the micro/nanofield driven by PEAs.

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“…In the field of manufacturing and processing of micro and nano equipment, the piezoelectric nanopositioning stage is widely used, due to its advantages of large driving force and fast response speed. On the basis of this nanopositioning stage, many kinds of highprecision engineering studies can be carried out, such as scanning probe microscope [1] and cell injection [2]. It is well known that the proportional-integral (PI) control scheme is already widely applied in the piezoelectric nanopositioning stage, due to its relative simple implementation [3,4].…”

Section: Introductionmentioning

confidence: 99%

Design of Composite Disturbance Observer and Continuous Terminal Sliding Mode Control for Piezoelectric Nanopositioning Stage

et al. 2021

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The nonlinearities of piezoelectric actuators and external disturbances of the piezoelectric nanopositioning stage impose great, undesirable influences on the positioning accuracy of nanopositioning stage systems. This paper considers nonlinearities and external disturbances as a lumped disturbance and designs a composite control strategy for the piezoelectric nanopositioning stage to realize ultra-high precision motion control. The proposed strategy contains a composite disturbance observer and a continuous terminal sliding mode controller. The composite disturbance observer can estimate both periodic and aperiodic disturbances so that the composite control strategy can deal with the disturbances with high accuracy. Meanwhile, the continuous terminal sliding mode control is employed to eliminate the chattering phenomenon and speed up the convergence rate. The simulation and experiment results show that the composite control strategy achieves accurate estimation of different forms of disturbances and excellent tracking performance.

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Design and control of a piezoactuated microfeed mechanism for cell injection

Cited by 16 publications

References 33 publications

Precise robust motion control of cell puncture mechanism driven by piezoelectric actuators with fractional-order nonsingular terminal sliding mode control

Precise robust motion control of cell puncture mechanism driven by piezoelectric actuators with fractional-order nonsingular terminal sliding mode control

Practical Tracking Control of Piezoelectric Actuators with Time-delay Estimation and Nonsingular Terminal Sliding Mode

Design of Composite Disturbance Observer and Continuous Terminal Sliding Mode Control for Piezoelectric Nanopositioning Stage

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