Development of a novel piezoelectric-actuated inertial pump using bionic valve

Ding, Junjun; Yi, Cao; Chen, Quanqu; Dong, Jing; Xu, Zhi; Tian, Dayue; Zhang, Bowen; Zeng, Ping; Wu, Yue; Yang, Zhigang

doi:10.1177/1045389x20978285

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…A piezo stack-based valve to resolve drawbacks of the hydraulic buck converter causing undesirable fluctuating forces was proposed where an active noise control technique using Filtered-X mean square algorithm was adopted to attenuate unwanted cancellate noises [22]. A simple inertial pump consisting of a cantilevered beam with the piezoelectric actuator and bionic valve made of silicone was proposed for the possible application to a heart valve with small flow resistance and large flow area [23]. The energy consumption of a four-way digital piezo stack-based valve was studied and demonstrated that a huge reduction of the electrical energy consumption during motion of switching and holding was achieved compared to other hydraulic on/off valves [24].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Spool Displacement Control to the Flow Rate in the Piezoelectric Stack-Based Valve System Subjected to High Operating Temperature

et al. 2021

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This work investigates the effect of spool displacement control of the piezoelectric stack actuator (PSA) based valve system on the flow motion of the pressure drop and flow rate. As a first step, the governing equations of the structural parts of the displacement amplifier and spool are derived, followed by the governing equation of the fluid part considering control volume and steady flow force. Then, an appropriate size of the valve is designed and manufactured. An experimental apparatus to control the spool displacement is set up in the heat chamber and tracking control for the spool displacement is evaluated at 20 °C and 100 °C by implementing a proportional-integral-derivative (PID) feedback controller. The tracking controls of the spool displacement associated with the sinusoidal and triangular trajectories are realized at 20 °C and 100 °C. It is demonstrated that the tracking controls for the sinusoidal and triangular trajectories have been well carried out showing the tracking error less than 3 μm at both temperatures. In addition, the flow motions for the pressure drop and the flow rate of the proposed valve system are experimentally investigated. It is identified from this investigation that both pressure drop and flow rate evaluated 20 °C have been decreased up to 18% at 100 °C. This result directly indicates that the temperature effect to control performance of the structural part and fluid part in the proposed PSA based valve system is different and hence careful attention is required to achieve the successful development of advanced valve systems subjected to a wide range of the operating temperature.

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Section: Introductionmentioning

confidence: 99%

The Effect of Spool Displacement Control to the Flow Rate in the Piezoelectric Stack-Based Valve System Subjected to High Operating Temperature

et al. 2021

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“…Moradi-Dastjerdi et al [28] proposed a single chamber piezoelectric micropump with passive valves, and used a diaphragm made of passive polymeric membrane reinforced by nanoclay particles as the substrate bonded to the piezo-actuator to improve flow rate and back pressure of pump and the results showed that increasing the volume fraction of the nanoclay leads to the simultaneous increase in back pressure and flow rate of the pump. Ding et al [29] proposed a piezoelectric-actuated inertial pump, which was consisted of a cantilever beam piezoelectric actuator, a hard tube and a bionic valve made of silicon, and the results shows that the maximum flow rate of the pump was 170.25 mL min −1 under driving voltage with amplitude of 98 V and frequency of 24.5 Hz. He et al [30] proposed a single chamber piezoelectric micropump with passive valves with high output pressure and when the amplitude and frequency of the driving voltage was 220 V and 85 Hz respectively, its maximum output pressure was 27.41 kPa.…”

Section: Introductionmentioning

confidence: 99%

A novel multi-channel silicon-based piezoelectric micropump with active piezoelectric valve array

Peng¹,

Wang²

2022

Smart Mater. Struct.

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In order to only use one piezoelectric micropump to simultaneously drive and control multi-channel flow fluids of complex microfluidic systems in biological, chemical and medical applications, and then improve the integration and reduce the size of systems, principle and structure of a multi-channel silicon-based piezoelectric micropump with active piezoelectric valve array are proposed and realized. The micropump is composed of one pumping unit and four active piezoelectric valves with annular boundaries, which form active piezoelectric valve array by uniformly distributing around pumping unit. All valves are connected to pumping unit by corresponding fluid channels and they can realize bidirectional fluid flowing. Therefore, pump can suck fluid from any one or more valves through pumping unit and can discharge fluid to the other one or more valves, which form its six working modes. Silicon-based pump body is processed by photoetching and the micropump is fabricated by fixing circular piezoelectric unimorph actuators on the silicon-based pump body. Flow rate model is established, the flow characteristics under each working mode are experimentally tested. Results show that the micropump can realize simultaneously multi-channel fluid input and output, when it works under three-in and single-out, it has the maximum flow rate and output pressure; the flow rate model can predict its flow rate, the maximum relative error between experimental test result and numerical simulation result is 9.99%; the micropump has high flow control accuracy, when amplitude of driving voltage varies from 35 V to 36 V with step of 0.1 V, it has the minimum change of flow rate of 1 μL/min, the maximum flow rate deviation of 5 μL/min and the maximum relative standard deviation of flow rate control of 0.175%. Therefore, the micropump provide feasible scheme for piezoelectric micropumps to be applied in complex microfluidic systems with multi-channel flow fluids, such as lab-on-chip.

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“…When the frequency reaches a certain critical value, the piezoelectric pump has a dynamic balance, and the pump flow is reduced to zero, resulting in the phenomenon named known as “pump lagging of valve”. Valve-based piezoelectric pumps include: flexible-valve piezoelectric pumps [ 16 ], bionic-valve piezoelectric pumps [ 24 ], self-priming-valve piezoelectric pumps [ 25 ], etc. A special flow channel is employed in valve-less piezoelectric pumps to replace the valve structure in valve piezoelectric pumps, in which the pump-lagging of the valve is effectively avoided.…”

Section: Introductionmentioning

confidence: 99%

Working Mechanisms and Experimental Research of Piezoelectric Pump with a Cardiac Valve-like Structure

Zhou

Sun²,

Fu³

et al. 2022

Micromachines

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In this study, based on the working principle of the cardiac valve structure that prevents blood from flowing back, a piezoelectric pump with a cardiac valve-like structure (PPCVLS) is designed. The operating principles of cardiac-valve-like structures (CVLSs) are introduced. Furthermore, the closure conditions of the CVLSs on both sides of the flow channel are explored. The principle behind the working-state conversion between “valve-based” and “valve-less” of PPCVLS is also analyzed. A high-speed dynamic microscopic image-analysis system was utilized to observe and verify the working-state conversion between “valve-based” and “valve-less” PPCVLSs. The resonant frequency of the piezoelectric pump was measured by Doppler laser vibrometer, and the optimal working frequency of the piezoelectric vibrator was determined as 22.35 Hz. The prototype piezoelectric pump was fabricated by the 3D printing technique, and the output performance of the piezoelectric pump was also evaluated. The experimental results show that the piezoelectric pump is valve-based when the driving voltage is greater than 140V, and the piezoelectric pump is valve-less when the driving voltage is less than 140 V. Furthermore, the maximum output pressure of the piezoelectric pump was 199 mm H2O when driven by the applied voltage of 220 V at 7 Hz, while the maximum flow rate of the piezoelectric pump was 44.5 mL/min when driven by the applied voltage of 220 V at 11 Hz.

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Development of a novel piezoelectric-actuated inertial pump using bionic valve

Cited by 8 publications

References 27 publications

The Effect of Spool Displacement Control to the Flow Rate in the Piezoelectric Stack-Based Valve System Subjected to High Operating Temperature

The Effect of Spool Displacement Control to the Flow Rate in the Piezoelectric Stack-Based Valve System Subjected to High Operating Temperature

A novel multi-channel silicon-based piezoelectric micropump with active piezoelectric valve array

Working Mechanisms and Experimental Research of Piezoelectric Pump with a Cardiac Valve-like Structure

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