Force and position control of the integrated electro-hydraulic servo-drive

Dindorf, R.; Woś, P.

doi:10.1109/carpathiancc.2019.8765986

Cited by 13 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…В позиційних приводах, які ґрунтуються на методі управління (М1) [1,2], блок формування команд реалізується на основі слідкуючого або пропорційного розподільника (Рис. 2).…”

Section: блок формування команд в приводах що ґрунтуються на методі у...unclassified

Quantitative evaluation of properties of structural solutions of electrohydraulic positioning actuators

Li¹,

Uzunov²

2022

Mech. Adv. Technol.

View full text Add to dashboard Cite

Based on the analysis of known electro-hydraulic positioning actuators, its generalized scheme was given, which includes: control unit, command formation unit for reaching given position, executive mechanism, position sensor, and hydraulic energy supply unit. It was determined that the main difference between the actuators lies in the command formation unit, the structural solutions of which are based on four control methods: analog control of fluid supply to reach preset position; discrete control the time of fluid supply to reach preset position; discrete control of fluid supply to reach preset fixed position; discrete control of portioned fluid supply to reach preset position. For various structural solutions of actuators, the influence of the main parameters on their effectiveness in achieving the basic properties was analysed. A quantitative evaluation was proposed, which made it possible to reveal the relationship between the structure and properties of the actuators. The obtained results can be used to develop new effective positional actuators.

show abstract

Section: блок формування команд в приводах що ґрунтуються на методі у...unclassified

Quantitative evaluation of properties of structural solutions of electrohydraulic positioning actuators

Li¹,

Uzunov²

2022

Mech. Adv. Technol.

View full text Add to dashboard Cite

show abstract

“…The main drawback of electrohydraulic proportional valves is their poor pressure-compensation stability, which cannot meet the operational requirements of modern agricultural equipment in complex and dynamic field environments. This significantly hinders the development of high-end hydraulic components [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An Analysis of the Static and Dynamic Behavior of the Hydraulic Compensation System of a Multichannel Valve

Xu¹,

Li²,

Cheng³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

Electro-hydraulic proportional valve is the core control valve in many hydraulic systems used in agricultural and engineering machinery. To address the problem related to the large throttling losses and poor stability typically associated with these valves, here, the beneficial effects of a triangular groove structure on the related hydraulic response are studied. A mathematical model of the pressure compensation system based on the power-bond graph method is introduced, and the AMESim software is used to simulate its response. The results show that the triangular groove structure increases the jet angle and effectively compensates for the hydrodynamic force. The steady-state differential pressure at the valve port of the new pressure compensation structure was 0.65 MPa. Furthermore, experimental results show that the pressure difference at the main valve port is 0.73 MPa, and that the response time is less than 0.2 s. It is concluded that the new compensation structure has good pressure compensation response characteristics.

show abstract

“…In Ref. [27], the authors presented the control of integrated electrohydraulic servo-drivers via conventional structures of PI and PD in order to separately control effort and position, respectively. The stability proof was not given.…”

Section: Introductionmentioning

confidence: 99%

Automation of a Hybrid Control for Electrohydraulic Servo-Actuators with Residual Dynamics

2022

View full text Add to dashboard Cite

In this paper, a hybrid position/force controller for electrohydraulic servo-actuators is designed in the presence of residual dynamics. The purpose is to apply a cycle of movement that is mostly used in industrial fatigue test applications, which consists in imposing a specified force on a flexible load after a movement to some position. This cycle can be repeated several times with different magnitudes and frequencies of force and position trajectories. Some damages could occur at switching times, especially in the presence of some residual dynamics. To avoid any damages at switching times, a force trajectory generator is designed. Then, our contribution defines a method to automatically generate the switching signal in order to commute between two controllers with any abrupt change of state. To show the effectiveness of the proposed approach, several simulation tests are carried out on the electrohydraulic system.

show abstract

Force and position control of the integrated electro-hydraulic servo-drive

Cited by 13 publications

References 5 publications

Quantitative evaluation of properties of structural solutions of electrohydraulic positioning actuators

Quantitative evaluation of properties of structural solutions of electrohydraulic positioning actuators

An Analysis of the Static and Dynamic Behavior of the Hydraulic Compensation System of a Multichannel Valve

Automation of a Hybrid Control for Electrohydraulic Servo-Actuators with Residual Dynamics

Contact Info

Product

Resources

About