Dual traveling wave rotary ultrasonic motor with single active vibrator

An, Dawei; Yang, Ming; Zhuang, Xiaoqi; Yang, Tianyue; Meng, Fan; Dong, Zixing

doi:10.1063/1.4979699

Cited by 24 publications

(9 citation statements)

References 24 publications

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“…The viscosity of the experimental water is inevitable, which also causes fluid flowing hysteresis. According to the literature [45,46] and the characteristics of the piezoelectric vibrator, another resonance may exist in the high-frequency region (around 1.8 kHz-2.1 kHz). By studying the amplitude of the piezoelectric vibrator, it was found that the amplitude decreases with the frequency increase, as shown in Figure 11, and the amplitude transformation period also decreases.…”

Section: Resultsmentioning

confidence: 99%

Design and Experimental Verification of a PZT Pump with Streamlined Flow Tubes

et al. 2019

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In this paper, a streamlined flow tube valveless piezoelectric pump (SLFT PZT pump) is proposed to modify the single flow trend and improve the fluid flow stability. Firstly, the structural and working principle of the streamlined flow tube, which accounts for changing the flow trend and improving the flow stability, were analyzed. The flow resistance and flow rate equations were established. Secondly, the pressure and velocity fields of the tube were simulated. These simulated results were consistent with the theoretical results. Thirdly, the flow resistance of the flow tube was tested with pressure differences of 1000 Pa, 1200 Pa, 1400 Pa and 1600 Pa respectively. The trend of the result curves was consistent with the simulated results. The amplitude-frequency relationship and the flow-rate-frequency relationship were also tested, both result curves highly corelate. The maximum amplitude was 0.228 mm (10 Hz, 120 V), and the maximum flow rate was 17.01 mL/min (10 Hz, 100 V). Finally, the theoretical flow rate of the SLFT PZT pump was calculated at 100 V and 120 V. These results roughly fitted with the experimental results. The streamlined flow tube could change the internal flow trend that remarkably improved the flow stability. Therefore, it promoted the application of the valveless PZT pump in living cells, biomedical and polymer delivery.

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Section: Resultsmentioning

confidence: 99%

Design and Experimental Verification of a PZT Pump with Streamlined Flow Tubes

et al. 2019

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“…The maximum torque and speed under Modes C and D are both much smaller than that under Modes A and B. Compared with prior piezoelectric motors [15][16][17][18][19][20][21], this motor can be flaky shape, and driven by a miniaturized circuit. The most significant difference between this design and the former ones is that the motor possesses different performances under variable excitation ways and vibration modes, and then has wider applicability.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, these piezoelectric motors are driven by out-of-plane bending modes [12][13][14][15]. The stator is developed with a slim and long configuration, which probably restricts its application in in-vivo [15][16][17]. To limit the height of piezoelectric motors, a compact motor operating in the d15 shear-mode was designed [15].…”

Section: Introductionmentioning

confidence: 99%

A Micro Piezoelectric Motor With Multiple Excitation Modes and Methods

2020

IEEE Access

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To widen the performance of piezoelectric motors, this paper demonstrates a micro piezoelectric motor having multiple driving ways. The stator includes a hollow polygon bar and two groups of PZT plates. PZT plates are symmetrically bonded onto a brass base, and used to actuate the vibration modes of the stator. The symmetrical design enables the motor to operate in two types of vibration modes. The working modes are the second/third-order in-plane bending modes, and can be excited by different ways. Elliptical motion of stator surface points is generated by superposition of two bending modes with the same order. To investigate the feasibility of multi-mode and multi-motivation mechanisms, vibration behaviors of stator driving particles are simulated using ANSYS software. The structural parameters of the stator are strictly designed to harmonize the eigenfrequencies of the vibration modes. The calculated results reveal that the motor performance can be adjusted by selecting different operating modes and excitation ways. The motor performances under various excitation ways and driving modes are also investigated experimentally to validate the proposed design. The dimension of the fabricated prototype motor is 8.3 mm ×7.2 mm×15.0 mm. The maximum torques are respectively 8.3 cN•m and 13.3 cN•m under single-phase and two-phase excitation voltages, when the motor operates in the second-order bending modes. The corresponding no-load speed are respectively 40 rpm and 47 rpm. The maximum torque and speed under the third-order bending modes are much smaller than that under the second-order bending modes.

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“…High-power piezoelectric systems (HPPSs) are used in a large range of applications, such as ultrasonic welding, cutting and actuators [1][2][3][4]. In high-power situations, it is crucial to effectively convert the electrical energy into the mechanical vibration in the piezoelectric transducers (PTs) [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A Driving and Control Scheme of High Power Piezoelectric Systems over a Wide Operating Range

Yang

Zhu

Fang

et al. 2020

Sensors

Self Cite

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Significant variation in impedance under a wide range of loads increases the difficulty of frequency tracking and vibration control in high-power piezoelectric systems (HPPSs). This paper proposed a wide operating range driving and control scheme for HPPSs. We systematically analyzed the impedance characteristics and deduced the load optimization frequency. In order to provide sufficient drive capability, the inverter combined with an LC matching circuit is configured. With the aid of a transformer ratio arm bridge (TRAB) combined with a proposed pulse-based phase detector (PBPD), the proposed scheme can control the vibration amplitude and keep parallel resonance status under a wide range of loads. Experiments conducted under actual operating conditions verify the feasibility of the proposed scheme under the modal resistance range from 7.40 to 500 Ω and the vibration range from 20% to 100%. Moreover, with the aid of a laser displacement sensor, our scheme is verified to have a vibration amplitude control accuracy better than 2% over a tenfold load variation. This research could be helpful for the driving and control of HPPSs operating in a wide range.

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Dual traveling wave rotary ultrasonic motor with single active vibrator

Cited by 24 publications

References 24 publications

Design and Experimental Verification of a PZT Pump with Streamlined Flow Tubes

Design and Experimental Verification of a PZT Pump with Streamlined Flow Tubes

A Micro Piezoelectric Motor With Multiple Excitation Modes and Methods

A Driving and Control Scheme of High Power Piezoelectric Systems over a Wide Operating Range

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