Design and Experimental Performance of a Novel Piezoelectric Inertial Actuator for Magnetorheological Fluid Control Using Permanent Magnet

Wang, Renming; Hu, Yili; Shen, Dezhu; Ma, Jijie; Wen, Jianming; Li, Jian Ping

doi:10.1109/access.2019.2907365

Cited by 15 publications

(7 citation statements)

References 29 publications

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“…ey agree well, which illustrates the accuracy of the proposed method. Figure 4 plots the samples of generalized displacement Q 1 of optimally controlled and uncontrolled system (10), from which the response reduction of our proposed method can be observed intuitively. Figures 5 and Shock and Vibration 6 show the mean value E[H] of total energy and mean square value E[Q 2 1 ] of generalized displacement varying with the intensity of random excitation.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Shao et al [9] proposed a new type of inertial piezoelectric actuator which has a miniaturization structure and dynamic performance of high precision and high load capacity. Wang et al [10] obtained an actuator with stable linear motion performance using integrated piezoelectric vibrator and MRF control structure. e traditional piezoelectric inertia actuator can only bear the force in the axial direction.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Stochastic Optimal Control Using Piezoelectric Stack Inertial Actuator

Lü

Wang

et al. 2020

Shock and Vibration

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An optimal control strategy for the random vibration reduction of nonlinear structures using piezoelectric stack inertial actuator is proposed. First, the dynamic model of the nonlinear structure considering the dynamics of a piezoelectric stack inertial actuator is established, and the motion equation of the coupled system is described by a quasi-non-integrable-Hamiltonian system. Then, using the stochastic averaging method, this quasi-non-integrable-Hamiltonian system is reduced to a one-dimensional averaged system for total energy. The optimal control law is determined by establishing and solving the dynamic programming equation. The proposed control law is analytical and can be fully executed by a piezoelectric stack inertial actuator. The responses of optimally controlled and uncontrolled systems are obtained by solving the Fokker–Planck–Kolmogorov (FPK) equation to evaluate the control effectiveness of the proposed strategy. Numerical results show that our proposed control strategy is effective for random vibration reduction of the nonlinear structures using piezoelectric stack inertial actuator, and the theoretical method is verified by comparing with the simulation results.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear Stochastic Optimal Control Using Piezoelectric Stack Inertial Actuator

Lü

Wang

et al. 2020

Shock and Vibration

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“…In addition to the above two methods, in recent years, researchers have also used smart materials to reduce drawback [33]- [34]. Wang et al proposed an inertial piezoelectric actuator that used magnetorheological fluid to adjust friction, achieving the goal of no drawback, the prototype resolution reached 0.0204 μm [33]. This type of actuator also requires complex control signals, and the performance of the smart material itself needs to be studied.…”

Section: Introductionmentioning

confidence: 99%

A Piezoelectric Linear Actuator Controlled by the Reversed-Phase Connection of Two Bimorphs

Jiang

et al. 2021

IEEE Access

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A linear actuator controlled by the reversed-phase connection of two piezoelectric bimorphs is proposed in this study to solve the problem of drawback in the existing piezoelectric linear actuators. The actuator is driven by one excitation signal, the two piezoelectric bimorphs will always bend in opposite directions by the reversed-phase connection, so the directions of the force output by the two piezoelectric bimorphs are opposite. Because of the length difference of the clamping blocks, the two forces outputted by each bending is different in magnitude, and always have a resultant force in the same direction to make the actuator move forward two steps in one cycle without drawback. A series of experiments were conducted to evaluate the performance of the actuator provided. The starting voltage is 40 Vp-p, resolution can reach 1.16μm without load. The load capacity of the actuator is 450 g with a 100 Vp-p voltage, a 2-Hz frequency, and the average step displacement in this case is 0.725 μm. The prototype has high linearity and good repeatability. Experiments have proved that the actuator controlled by reversed-phase connection can eliminate drawback in principle, and can move forward two steps in one cycle. The resolution of the prototype by the reversedphase connection is much higher than the in-phase connection, and it is a new method to improve the driving performance of piezoelectric actuators.

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“…The parallel-type stick-slip actuators mainly in rod type mean the motion direction of the stator is parallel to the motion direction of the slider whose normal force is generally constant. The normal force which is independent of gravity is produced by an additional mechanism, such as permanent magnets (Hunstig et al, 2013a; Neuman et al, 2015; Wang et al, 2019c), metal springs (Cheng et al, 2017b; Dubois et al, 2016; Lee et al, 2011), or rubber rings (Hunstig et al, 2016). Therefore, the tangential stiffness of a parallel-type stick-slip actuator is usually rather small, resulting in a smaller load capacity along the axial direction.…”

Section: Introductionmentioning

confidence: 99%

Design, modeling, and performance of a bidirectional stick-slip piezoelectric actuator with coupled asymmetrical flexure hinge mechanisms

Gao

et al. 2020

Journal of Intelligent Material Systems and Structures

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A stick-slip piezoelectric actuator with bidirectional motion is proposed and measured, which uses coupled asymmetrical flexure hinge mechanisms and symmetrical indenter to generate controllable tangential displacement. The operating principle of the proposed stick-slip actuator is illustrated, and the normal force variation between the stator and slider is analyzed. A dynamic model based on the method of dimensionality reduction is established to simulate the displacement and load capacity. In order to obtain improved actuator properties, the design rules of the coupled flexure hinge mechanisms are discussed, and the tangential and normal displacements of the indenter are investigated by the finite element method. A prototype is fabricated, and the experiment investigation of the actuator characteristics is presented. Testing results indicate that the actuator achieves the maximum output velocity of 10.14 mm/s and its maximum load reaches 1.5 N under a voltage of 100 Vp–p and a frequency of 850 Hz in the positive x-direction. The maximum efficiency of the actuator is 0.57% with a load of 90 g, a locking force of 5 N, and the actuated velocity of 5.48 mm/s. In addition, experimental results confirm the feasibility of the presented model by comparing numerical simulation results.

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Design and Experimental Performance of a Novel Piezoelectric Inertial Actuator for Magnetorheological Fluid Control Using Permanent Magnet

Cited by 15 publications

References 29 publications

Nonlinear Stochastic Optimal Control Using Piezoelectric Stack Inertial Actuator

Nonlinear Stochastic Optimal Control Using Piezoelectric Stack Inertial Actuator

A Piezoelectric Linear Actuator Controlled by the Reversed-Phase Connection of Two Bimorphs

Design, modeling, and performance of a bidirectional stick-slip piezoelectric actuator with coupled asymmetrical flexure hinge mechanisms

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