Output characteristics of a horizontal type electro-hydraulic excitation system with inertial loading: Modeling and experimentation

Ren, Yan; Ji, Xiancheng; Ruan, Jian

doi:10.1007/s12206-019-1004-8

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…Leakage variation of the fully-rotary valve (FRV) that is the key part of the device caused by pressure difference and geometric parameters is investigated. Ren et al 25 enhanced the 2D rotary valve in the horizontal type electro-hydraulic excitation system, analyzed the output characteristics, derived the analytical expressions for the operating frequency and excitation waveform, and proved that analytical expressions were consistent with the experimental data. Liu et al 26 proposed a novel wave generation device for electro-hydraulic exciter using rotary valve control and established a mathematical model of the wave generation device.…”

Section: Introductionmentioning

confidence: 89%

Characterization of rotary valve control vibration system for vibration stress relief applications

Zhou,

Zhao,

Wang

2024

Sci Rep

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To enhance the vibration system characteristic distortion and pressure loss, we propose a novel rotary valve control vibration system. The paper presents the designed structural composition and generation mechanism of the rotary valve control vibration system. It also derives the mathematical model for the rotary valve distribution process and the overall system. The flow field inside the rotary valve is dynamically simulated using the multiple reference frame model, allowing for the determination of the change rule of the rotary valve’s output characteristics. An AMESim model was developed to analyze the vibration characteristics of the rotary valve control system. The effects of parameters such as inlet pressure, motor speed, and oil supply pump displacement were investigated. A rotary valve control vibration system experimental bench was constructed to experimentally verify the output characteristics of the rotary valve and the vibration characteristics of the system. The results indicate that the characteristic curve of the designed vibration system closely resembles a sinusoidal wave. Additionally, the rotary valve exhibits low pressure loss, making it more suitable for vibration stress relief applications. By appropriately increasing the inlet pressure and decreasing the motor speed, the vibration characteristics of the system can be improved.

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Section: Introductionmentioning

confidence: 89%

Characterization of rotary valve control vibration system for vibration stress relief applications

Zhou,

Zhao,

Wang

2024

Sci Rep

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“…Wang et al [16] proposed double rotary valve controlled electro-hydraulic vibration exciter to increase the vibration amplitude by studying the variation rule of the exciter's vibration frequency and amplitude under the control of the flow area based on the control equation of vibration waveform. Yan et al [17] detailed modeling of 2D valve controlled electro-hydraulic vibration exciter, studied the vibration waveform and resonance characteristics through numerical analysis and experimental tests, proved the hydraulic resonance as an important factor affecting the excitation waveform distortion and summarized the influence law of coupling relationship between working frequency and resonant frequency on waveform distortion. Wang et al [18] designed high frequency rotary valve controlled electrohydraulic vibration exciter with three kinds of value spool oil port shapes such as rectangular, triangular, and semicircular, analyzed vibration amplitude characteristics of the three typical oil ports, proposed to evaluate the vibration waveform using harmonics theory, and designed valve core oil port shape.…”

Section: Introductionmentioning

confidence: 99%

Study on Vibration Characteristics of Electro-Hydraulic Excitation System Controlled by Alternating Flow Distribution Rotary Valve

Zhao,

Yin,

Zhou

et al. 2023

IEEE Access

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Taking advantage of the superiority of valve controlled electro-hydraulic excitation system with wide vibration frequency and adjustable amplitude, a rotary valve controlled electro-hydraulic excitation system is proposed. The structural composition of system and the excitation principle of alternating flow distribution due to rotary valve are formulated. The system mathematical model is derived and a simulation model is constructed based on Matlab/Simulink, and the accuracy of the simulation model is verified by prototype experiments. In accordance with this model, the influence law of main structural parameters of rotary valve and excitation hydraulic cylinder on the vibration characteristics of electrohydraulic excitation system are indicated. The results reveal that the system vibration waveform obtained from model simulation and prototype experiment are almost identical with only 8.97% error. The effective length of spool groove and the spool radius increased, the system vibration displacement improved. The number of oil grooves increased, the system vibration frequency expanded. With the increase of the spool radius, the vibration displacement of the system increases greatly and the vibration characteristics of the system has affected significantly. The effective working area of hydraulic cylinder piston and equivalent mass increased, the system vibration displacement decreased. The vibration characteristics of the system have remarkable adjustability and prominent working output characteristics.

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Experimental and numerical study on pressure oscillation in a combustor with rotary valve

Wang

et al. 2021

Chinese Journal of Aeronautics

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Output characteristics of a horizontal type electro-hydraulic excitation system with inertial loading: Modeling and experimentation

Cited by 4 publications

References 29 publications

Characterization of rotary valve control vibration system for vibration stress relief applications

Characterization of rotary valve control vibration system for vibration stress relief applications

Study on Vibration Characteristics of Electro-Hydraulic Excitation System Controlled by Alternating Flow Distribution Rotary Valve

Experimental and numerical study on pressure oscillation in a combustor with rotary valve

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