Study on the Performance and Control of a Piezo-Actuated Nozzle-Flapper Valve with an Isothermal Chamber

Kamali, Mohammadreza; Jazayeri, Seyed Ali; Najafi, Farid; Kawashima, Kenji; Kagawa, Toshihiro

doi:10.5545/sv-jme.2015.3339

Cited by 6 publications

(5 citation statements)

References 14 publications

(31 reference statements)

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“…Substituting Equations ( 11) and (12) to Equation ( 15), the transient and steady flow force can be rewritten as follows by considering the shape of the proposed spool valve.…”

Section: Modeling Of Valve Systemmentioning

confidence: 99%

“…A nozzle-flapper valve driven by the piezo stack actuator was introduced to accurately control both the pressure and flow rate. The sliding mode control was adopted to evaluate the steady and unsteady pressure under the isothermal chamber [12]. A nonlinear model and sliding mode control of the hydraulic engine valve regulated by an innovative piezo-hydraulic valve spool were studied.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Substituting Equations ( 11) and (12) to Equation ( 15), the transient and steady flow force can be rewritten as follows by considering the shape of the proposed spool valve.…”

Section: Modeling Of Valve Systemmentioning

confidence: 99%

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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“…The working principle of an isothermal chamber is to fill a certain density of high thermal conductivity metal porous material inside the chamber to make the discharge process approximate to an isothermal process, thereby transforming a flow item that is difficult to accurately measure into a pressure item that is easy to measure. Therefore, isothermal chamber has a wide range of applications in the flow measurement of pneumatic field (Funaki et al, 2007;Kamali et al, 2016;Kato et al, 2009;Kawashima et al, 2003;Peng et al, 2015). However, in the actual application process, the air temperature inside the isothermal chamber is not strictly isothermal, and there is a certain amount of temperature change.…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of the discharge process of isothermal chamber to determine the isothermal characteristic

Yang

Meng

2022

JTST

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Isothermal chamber is filled with a certain density of high thermal conductivity porous material, which has a wide range of applications in the flow measurement of pneumatic field, and its isothermal characteristic is critical to its application results. In this paper, in order to improve the numerical calculation accuracy of the isothermal characteristics during discharge process, a discharge model of isothermal chamber with fractal effective thermal conductivity (ETC) for determining the isothermal characteristic is reported. Firstly, the stuffer in isothermal chamber is considered as porous random fiber bundle, and an ETC prediction model of anisotropic porous random fiber bundle in both vertical and horizontal directions is established by fractal theory. This model with two directions is in good agreement with the experimental results, and the relative root mean square errors (RRMSE) are 3.94% and 9.85%, respectively. Secondly, the discharge model with fractal ETCs is built, and the isothermal characteristics of isothermal chambers with three different porosities are determined by numerical simulation. Finally, experiments to determine the isothermal characteristic are carried out. The numerical simulation results are in good agreement with the experimental results, and the relative errors are less than 3%. It could be concluded that accurately determining the ETC of the stuffer in isothermal chamber can improve the numerical calculation accuracy of the isothermal characteristic. Moreover, compared with the experimental method, numerical method is energy-saving and timesaving.

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“…Their high integrative power [5,6], low heat [7,8], and low noise levels [9,10] can provide relatively large efforts, high reliability, and biocompatibility [11][12][13][14]. Because of these benefits, the piezoelectric actuator has been widely used in a variety of industries, including space exploration [15,16], active shutters, pulsed jets [17][18][19], vibration control [20][21][22][23][24], optical path control [25][26][27][28], micro-motorization of instruments [29,30], valves and pumps for implants [31][32][33][34][35][36], magnetic resonance imaging (MRI) [37,38], microsurgery [39][40][41][42], and other micro-displacement techniques [43][44][45][46][47][48]. Position control is severely hindered by the unique piezoelectric actuator structure, nonlinear hysteresis behaviors, and additional sources of positioning precision loss, such as creep drift and temperature effects…”

Section: Introductionmentioning

confidence: 99%

Hybrid Approach Control of Micro-Positioning Stage with a Piezoelectric Actuator

Ounissi¹,

Kaddouri²,

Abdessemed³

2022

JISC

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For a class of system with nonlinear hysteresis, this paper presents an adaptive hybrid controller based on the hybrid backstepping-sliding mode, and describes the controller analytically by the LuGre model. Both backstepping and the sliding mode techniques are based on the Lyapunov theory. Drawing on this common point, the authors developed a new controller combining the two control techniques with a recursive design. The design aims to achieve two effects: assuring the stability of the closed loop system, and improving the continuous performance of the tracking position trajectory. The performance of the proposed hybrid controller was verified by implementing the identified Piezo model. The results show that our controller can track the system output desirably with the reference trajectory.

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Study on the Performance and Control of a Piezo-Actuated Nozzle-Flapper Valve with an Isothermal Chamber

Cited by 6 publications

References 14 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

Modeling and simulation of the discharge process of isothermal chamber to determine the isothermal characteristic

Hybrid Approach Control of Micro-Positioning Stage with a Piezoelectric Actuator

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