Design and damping performance analysis of a multistage meandering hybrid valved magnetorheological damper

Zhu, Jiehong; Yang, Xiaolong; Xie, Guojin; Cao, Zhiqiang

doi:10.1088/1402-4896/ad31ed

Cited by 2 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Large wind turbines utilize pitch-control technology to achieve reliable power regulation [1]. Electro-hydraulic servo systems are commonly employed in pitch systems for their better power density and various benefits [2][3][4][5][6]. At present, the wind turbine pitch control system mainly uses two forms of electro-hydraulic servo devices: servo valve control and servo pump control.…”

Section: Introductionmentioning

confidence: 99%

Electro-Hydraulic Servo-Pumped Active Disturbance Rejection Control in Wind Turbines for Enhanced Safety and Accuracy

Zhang,

Yu,

et al. 2024

Processes

View full text Add to dashboard Cite

Aiming at the high accuracy and high robustness position control of servo pump control in the pitch system of a wind turbine generator, this paper proposes an active disturbance rejection controller (ADRC). The ADRC considers pitch angular velocity and acceleration limits. According to the kinematics principle of the pump-controlled pitch system, the relationship between the pitch angular velocity and acceleration limit and the displacement of the hydraulic cylinder is established. Through the method of theoretical analysis, the nonlinear relationship expression between pitch angle and hydraulic cylinder displacement is obtained, and the linearization of pitch angular velocity control is realized; the formula for b0 (the estimated value of the input gain of the system) of the pump-controlled pitch system is obtained by the method of modeling and analysis, b0 is the key parameter for the design of the ADRC; the stability of the controller parameters is proved through the stability analysis and simulation analysis, and the design of the self-immobilizing controller with pitch angular velocity and acceleration limitation is the completed ADRC design. Finally, a joint simulation platform of AMESim and MATLAB as well as a physical experiment platform of electro-hydraulic servo pump-controlled pitch control is constructed, and the effectiveness of the proposed control method is verified through simulation and experiment. The results show that compared with the unrestricted ADRC and PID, the velocity-acceleration-limited ADRC can effectively improve the control effect of the angular velocity and acceleration of the paddle, smooth the startup process, improve the safety of the system, and have better position control accuracy and anti-jamming ability.

show abstract

Section: Introductionmentioning

confidence: 99%

Electro-Hydraulic Servo-Pumped Active Disturbance Rejection Control in Wind Turbines for Enhanced Safety and Accuracy

Zhang,

Yu,

et al. 2024

Processes

View full text Add to dashboard Cite

show abstract

“…As a type of semi-active damper, the MRD can regulate the damping characteristics by adjusting excitation current [1][2][3], possessing advantages such as fast response speed, a wide adjustable range of damping force, and low power consumption [4][5][6][7]. It has a promising prospect in the field of vibration control and has been widely applied in fields such as vehicle suspension [8][9][10][11], human exoskeletons [12][13][14], buildings [15][16][17] and bridges [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Multi-condition adaptive detail characterization model of magnetorheological dampers and experimental verification

Lei,

Li,

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

The theoretical model for predicting the damping characteristics of magnetorheological dampers (MRDs) is significant for enhancing the design efficiency of the control algorithm. However, some existing theoretical models face limitations in characterizing MRD damping characteristics simultaneously in terms of nonlinear detail characterization and adaptability to variable working conditions. Therefore, this paper proposed the Composite Double-Boltzmann (CDB) model combining the Double-Boltzmann (DB) function widely used in the field of biology and chemistry for its strong nonlinear characterization capability. Utilizing this model to fit the sinusoidal vibration testing data of the MRD prototype under variable combination working conditions, obtaining quantitative relationships between the undetermined parameters in the CDB model and the excitation current, vibration frequency, and amplitude to enable the model to address both the nonlinear details characterization of MRDs and adaptability to variable working conditions. Subsequently, the validity of the quantitative relationships were verified by comparing the calculated parameter values using the quantitative relationships with the original accurate parameter values. In order to verify the validity of the CDB model, extensive unknown working condition vibration tests were conducted on the MRD prototype under variable excitation currents, vibration frequencies, amplitudes and random excitation working conditions, employing the CDB and Tanh models to predict the damping characteristics, to compare to demonstrate the CDB model’s capability of adapting to variable working conditions while accurately characterizing the nonlinear details of MRD damping characteristics.

show abstract

Design and damping performance analysis of a multistage meandering hybrid valved magnetorheological damper

Cited by 2 publications

References 25 publications

Electro-Hydraulic Servo-Pumped Active Disturbance Rejection Control in Wind Turbines for Enhanced Safety and Accuracy

Electro-Hydraulic Servo-Pumped Active Disturbance Rejection Control in Wind Turbines for Enhanced Safety and Accuracy

Multi-condition adaptive detail characterization model of magnetorheological dampers and experimental verification

Contact Info

Product

Resources

About