Energy Dissipation Mechanism and Control Model of a Digital Hydraulic Damper

Wang, Chenglong; Qiu, Zhiwei; Zeng, Qingliang; Liu, Yanxi; Miao, Gen-Yuan

doi:10.1155/2019/1432910

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the construction industry, the effectiveness of installing semiactive hydraulic dampers along the diagonal direction of the rectangular frame of a main structure has been verifed to reduce the damage to buildings and bridges caused by earthquakes [14][15][16]. In addition, magnetorheological (MR) dampers, which use a magnetic feld, have been developed to improve the performance of cylinder-type hydraulic dampers, and several research results have been published [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Development of an Impact Energy Absorption Structure by an Arc Shape Stroke Origami Type Hydraulic Damper

Guan,

Yao,

Zhao

et al. 2023

Shock and Vibration

View full text Add to dashboard Cite

Cylindrical hydraulic dampers used to reduce impacts and vibrations typically have linear strokes. In this study, a new arc-shaped stroke-type origami hydraulic damper with a nonlinear damping performance was proposed. By examining the damping effect of the origami hydraulic damper, the damping force was found to be proportional to the square of the motion velocity. A nonlinear dynamics governing equation was established using the derived formula for the damping force of the origami hydraulic damper, and a numerical analysis using the Runge–Kutta method was established. An impact test device with an arc-shaped stroke was developed, and the error between the numerical analysis value of the impact displacement and the measured experimental value was confirmed to be sufficiently small. An impact verification experiment confirmed that the damping effect of the origami hydraulic damper increases with the input energy of the impact. By varying the diameter of the orifice hole, which is an important design factor for an origami hydraulic damper, the damping effect of the origami hydraulic damper was found to increase as the diameter of the orifice hole decreased. To examine the effect of the type of hydraulic oil inside the origami hydraulic damper, water and edible oil were used to conduct impact verification experiments, and it was found that the effect on the impact damping effect was relatively small.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of an Impact Energy Absorption Structure by an Arc Shape Stroke Origami Type Hydraulic Damper

Guan,

Yao,

Zhao

et al. 2023

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…EHSs mainly consist of a servo valve, a hydraulic cylinder, and different kinds of detection sensors and other auxiliary parts [4,5]. An electrohydraulic system (EHS), which includes a position servo control system and a force servo control system, is a typical closed-loop torque control system [6,7], and EHSs also are multidomain energy system integrating characteristic of the mechanics, pattern recognition, digital technology, and control engineering [8,9].…”

Section: Introductionmentioning

confidence: 99%

Improved Beetle Antennae Search Algorithm-Based Lévy Flight for Tuning of PID Controller in Force Control System

Fan

Shao

Sun

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

To enhance the anti-interference capability of an electrohydraulic force servo control system and increase the efficiency of the PID controller, this paper proposes a LBAS-PID controller. In LBAS, the random step created by the Lévy flight trajectory was used in the original algorithm to enhance the diversity of the population and convergence speed. In the force servo control system, LBAS-PID can enhance the performance of the system. First, the basic mathematical model of an electrohydraulic force servo control system was built based on theoretical analysis. The transfer function model was obtained by identifying the system parameters. Second, the introduced Lévy flight beetle antennae search algorithm was introduced and applied to ten benchmark functions, and the results were compared with those of other algorithms. Then, the proposed algorithm was applied in the PID controller to tune PID parameters in the force servo control system. To comprehensively evaluate performances of an electrohydraulic force servo control system that is controlled by the LBAS-PID controller, the frequency response analysis and temporal response analysis were obtained. The numerical analysis results indicate that an electrohydraulic force servo control system with an LBAS-PID controller could substantially increase the control characteristics of the system and restrain the external disturbances when different interference signals are examined.

show abstract

Study on Hydraulic Dampers Using a Foldable Inverted Spiral Origami Structure

Guan

Zuo

Wang³

et al. 2022

Vibration

View full text Add to dashboard Cite

Hydraulic dampers for the vibration damping of industrial machinery and building structures are typically cylindrical. This study proposes a novel, axially free-folding hydraulic damper of the origami type to improve the structural characteristics of the conventional cylinder shape with restricted effective stroke in relation to the overall length. First, the basic design equation of the proposed origami hydraulic damper was derived by demonstrating that the fold line cylinders on the sidewalls will always meet the foldable condition of the origami hydraulic damper, that is, α=π/n and π/2n≤β≤π/n. Next, the fluid flow characteristics inside the origami hydraulic damper and in the flow path were analyzed; it was determined that the actual damping force exerted on the origami damper was proportional to the square of the velocity of motion. Equations of motion were developed considering the derived damping force equation, and a vibration analysis method using the Range–Kutta numerical analysis technique was established. A validation test system with an origami hydraulic damper in a mass-spring vibration system was developed, and vibration tests were performed with actual seismic waves to verify the damping characteristics and effectiveness of the origami hydraulic damper. Furthermore, the orifice hole diameter at the end of the origami structure as well as the type of internal fluid, were varied in the vibration tests. The effect of the main components of the origami hydraulic damper on the damping effect was analyzed, revealing that the orifice hole diameter had a more significant effect than the internal fluid.

show abstract

Energy Dissipation Mechanism and Control Model of a Digital Hydraulic Damper

Cited by 3 publications

References 4 publications

Development of an Impact Energy Absorption Structure by an Arc Shape Stroke Origami Type Hydraulic Damper

Development of an Impact Energy Absorption Structure by an Arc Shape Stroke Origami Type Hydraulic Damper

Improved Beetle Antennae Search Algorithm-Based Lévy Flight for Tuning of PID Controller in Force Control System

Study on Hydraulic Dampers Using a Foldable Inverted Spiral Origami Structure

Contact Info

Product

Resources

About