Fluid-dynamic analysis and multi-objective design optimization of piezoelectric servo valves

Gui, Suyao; Zhang, Shishuang; Fu, Bo; Ling, Mingxiang

doi:10.1016/j.flowmeasinst.2022.102157

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…At the same time, it reduces the impact on the slide valve wall, achieving the expected effect of reducing the peak flow force. Gui [69,70] also studied this method and proposed a hydrodynamic optimization design for the spool valve of a piezoelectric servo valve. Figure 5 shows the spool valve structure, while Figure 6 shows the optimization of the control room.…”

Section: Structural Design Of Spool Valvesmentioning

confidence: 99%

“…This design ensures that the compensation profile can guide fluid to the orifice of the valve sleeve, which corresponds to ports A and B under different spool valve openings. Table 2 and Figure 7 [69] show the effect of optimized structure on steady-state flow force. The results indicate that optimization has a significant impact on the flow force.…”

Section: Structural Design Of Spool Valvesmentioning

confidence: 99%

“…From Figure 7, as the valve port pressure increases, the optimization design has a more significant effect on reducing the flow force, and the smaller the valve port opening, the better the optimization effect. Gui [69,70] also studied this method and proposed a hydrodynamic optimization design for the spool valve of a piezoelectric servo valve. Figure 5 shows the spool valve structure, while Figure 6 shows the optimization of the control room.…”

Section: Structural Design Of Spool Valvesmentioning

confidence: 99%

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Review of the Research on and Optimization of the Flow Force of Hydraulic Spool Valves

Sun

et al. 2023

Processes

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As one of the important factors affecting the stability of slide valves, the analysis and research of flow force are of great significance. In recent years, more and more experts and scholars have conducted research in this field, attempting to find methods to reduce or utilize the flow force of hydraulic spool valves. Flow force includes steady-state flow force and transient flow force, with steady-state flow force having the most significant impact on spool valves. The influencing factors of flow force are complex and diverse, including the cavitation phenomenon, shape of the throttling groove, and jet angle. At present, the main ways to reduce flow force are to design the structure of the spool valve, the structure of the valve sleeve, and the flow channel of the valve body. This article mainly reviews the definition, calculation methods, influencing factors, and methods for reducing the flow force of slide valves. This provides a new approach to reducing the flow force in hydraulic spool valves.

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Section: Structural Design Of Spool Valvesmentioning

confidence: 99%

Section: Structural Design Of Spool Valvesmentioning

confidence: 99%

Section: Structural Design Of Spool Valvesmentioning

confidence: 99%

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Review of the Research on and Optimization of the Flow Force of Hydraulic Spool Valves

Sun

et al. 2023

Processes

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“…He applied and optimized a damping flange, achieving a 93% reduction in the axial that was verified through laboratory experiments. Similarly, Liu [13] designed a novel cartridge valve core structure to compensate for the negative effect of flow forces on valve characteristics by reducing the compensation coefficient by 40 to 64%, depending on the degree of valve opening, while Gui [14] proposed a methodology for the fluid-dynamic optimization of a piezoelectric servo valve spool geometry, achieving a dynamic bandwidth increase of approx. 26%.…”

Section: Introductionmentioning

confidence: 99%

Adjustment of Proportional Control Valve Characteristics via Pressure Compensation Using Flow Forces

Lisowski,

Filo,

Rajda

2024

Energies

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This article concerns flow analysis through a multi-section proportional control valve. In valves of this type, the flow rate is adjusted through an electromagnet current. However, for a fixed control signal value, the flow rate changes as the pressure in the system increases, which is an unfavorable phenomenon. Compensation for pressure influence is usually achieved using additional valves. In this work, the valve characteristics were modified to achieve a possibly steady flow rate by compensating for the pressure using flow forces without the necessity of correction valves. For this purpose, the geometry of the spool throttling slots was designed by making precise cuts. Moreover, the parameters of the return springs were adjusted accordingly. The changes were introduced in such a way as to adjust the direction of the fluid stream and thus influence the balance of forces acting on the spool. Simulation tests were performed using the CFD method. In turn, laboratory experiments were carried out using the PONAR WREM10 valve with a prototype spool in two neutral position flow configurations: closed (E) and open (W). The results confirmed the valve’s ability to maintain a quasi-constant flow rate in a wide pressure range. The maximum obtained non-uniformity in the flow rate for the fixed control signal in the whole studied pressure range, p = 5–30 MPa, was 6.3% except for the lowest current intensity, I=0.6A, when it raised to 13.6%. Moreover, high consistency between simulation results and laboratory experiments was achieved. The difference in the obtained flow rate did not exceed 8–10% in the case of low current intensity values I=0.6–0.75 A, and it fell below 5% at higher ones.

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“…Many researchers have studied the valve spool design through CFD simulations. Gui et al [ 1 ] optimized the valve spool structures to minimize the steady flow force and the mass of the main spool. CFD simulations were carried out to evaluate the flow force.…”

Section: Introductionmentioning

confidence: 99%

Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates

Chen,

Wang,

2023

Heliyon

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Fluid-dynamic analysis and multi-objective design optimization of piezoelectric servo valves

Cited by 13 publications

References 21 publications

Review of the Research on and Optimization of the Flow Force of Hydraulic Spool Valves

Review of the Research on and Optimization of the Flow Force of Hydraulic Spool Valves

Adjustment of Proportional Control Valve Characteristics via Pressure Compensation Using Flow Forces

Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates

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