Impact Force Analysis in Inertia-Type Piezoelectric Motors

Koç, Burhanettin; Delibas, Bülent

doi:10.3390/act12020052

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…The piezo-stacks are driven by saw-tooth waveform voltages. In [ 23 ], Koc et al proposed a two-phase inertial piezoelectric motor. Through two-phase voltage driving in the ultrasonic frequency band, the hysteresis nonlinearity of each of the two piezoelectric stacks is offset by the other, ensuring that the forward and reverse speeds stay consistent and high.…”

Section: Comparison and Discussionmentioning

confidence: 99%

A Compact Piezo-Inertia Actuator Utilizing the Double-Rocker Flexure Hinge Mechanism

Sun

Lei

et al. 2023

Micromachines

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With a simple structure and control method, the piezo-inertia actuator is a preferred embodiment in the field of microprecision industry. However, most of the previously reported actuators are unable to achieve a high speed, high resolution, and low deviation between positive and reverse velocities at the same time. To achieve a high speed, high resolution, and low deviation, in this paper we present a compact piezo-inertia actuator with a double rocker-type flexure hinge mechanism. The structure and operating principle are discussed in detail. To study the load capacity, voltage characteristics, and frequency characteristics of the actuator, we made a prototype and conducted a series of experiment. The results indicate good linearity in both positive and negative output displacements. The maximum positive and negative velocities are about 10.63 mm/s and 10.12 mm/s, respectively, and the corresponding speed deviation is 4.9%. The positive and negative positioning resolutions are 42.5 nm and 52.5 nm, respectively. In addition, the maximum output force is 220 g. These results show that the designed actuator has a minor speed deviation and good output characteristics.

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Section: Comparison and Discussionmentioning

confidence: 99%

A Compact Piezo-Inertia Actuator Utilizing the Double-Rocker Flexure Hinge Mechanism

Sun

Lei

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…As one actuator expands and the other shrinks, their respective hysteretic nonlinearities are canceled. The method alleviates the backward movement to a certain extent [ 35 ]. To sum up, the above studies have achieved the goal of reducing the backward motion of moving actuator to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of a Clamping-Drive Alternating Operation Piezoelectric Actuator

2023

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In recent years, piezoelectric actuators, represented by inertial and inchworm actuators, have been widely applied because of their high accuracy and excellent responsiveness. Despite the development of various piezoelectric actuators, there remain some flaws in this technology. The sticking point is that the piezoelectric actuators based on the friction driving principle are prone to unwanted backward motion when outputting stepping motion. It is thus urgent to explore solutions from the perspectives of principle and structure. In this paper, a clamping-drive alternating operation piezoelectric actuator is proposed, the two feet of which are driven by two piezoelectric stacks, respectively. Due to double-foot alternate drive guide movement, backward movement is prevented in theory. By adopting the double-layer stator structure, integrated processing and assembly are facilitated. Meanwhile, a double flexible hinge mechanism is installed in the stator to prevent the drive foot from being overturned due to ineffectiveness and premature wear. In addition, the stator is equipped with the corresponding preload mechanism and clamping device. After the cycle action mechanism of one cycle and four steps is expounded, a model is established in this study to further demonstrate the principle. With the prototype produced, a series of experiments are performed. In addition, the amplitude of actuation of the stator is tested through amplitude experiment. The performance of the stator is evaluated by conducting experiments in the alternating step and single step actuation modes. Finally, the test results are analyzed to conclude that the actuator operating in either of these two modes can meet the practical needs of macro and micro actuation.

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“…However, the working modes of existing piezoelectric motors are typically fixed and should be simultaneously excited [13][14][15][16][17][18][19][20]. Furthermore, the chosen vibrational modes can normally be electrically excited by only one method [21][22][23][24][25][26][27][28][29][30]. The actuated vibrational modes generate either standing wave or superimposed traveling wave in stator body.…”

Section: Introductionmentioning

confidence: 99%

Research on interactions between different operating modes of piezoelectric motors

Li,

Chen

2023

Smart Mater. Struct.

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This paper explores interactions between multiple operating modes of piezoelectric motors. The developed motor can operate in the second-order in-plane bending modes (I), the third-order in-plane bending modes (II) and the first-order out-of-plane bending modes (III). These working modes excited separately and simultaneously, can be manipulated electronically. Each of the vibrational modes can both be driven by applying single-phase and two-phase voltages to piezoelectric ceramic plates. In order to produce all the vibration states, the structural parameters of stator were strictly designed to harmonize two eigenfrequencies of each type of vibrational modes by using finite element software ANSYS. Displacement characteristics of stator driving particles under all vibration states were calculated to evaluate mutual effects of different operating modes. Simulation results reveal that the superposition of I and II corresponds to a mode with lower resonance frequency and larger vibration amplitude in stator body. For the designed motor, the conjunction of modes I and II actually forms the first-order in-plane vibrational mode B01. Therefore, the response displacement of stator driving points reaches the maximum value when modes I and II are conjointly actuated by supplying single-phase excitation voltage under the premise of undistorted three-dimensional motion trajectory. The motor performances under that condition were also investigated experimentally. The dimension of the fabricated prototype motor is 10 mm × 10 mm × 20 mm. The stall torque is 0.2 N·m under 200 V single-phase excitation, when the motor operates in modes I and II simultaneously. The maximum no-load speed is 74 r min−1. Compared with separate actuation of vibrational modes I and II, mechanical properties of the prototype motor are significantly improved.

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Impact Force Analysis in Inertia-Type Piezoelectric Motors

Cited by 11 publications

References 27 publications

A Compact Piezo-Inertia Actuator Utilizing the Double-Rocker Flexure Hinge Mechanism

A Compact Piezo-Inertia Actuator Utilizing the Double-Rocker Flexure Hinge Mechanism

Design and Experiment of a Clamping-Drive Alternating Operation Piezoelectric Actuator

Research on interactions between different operating modes of piezoelectric motors

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