Method for adjusting a pressure medium supply for at least one hydraulic actuator, and hydraulic system

A knowledge-based decision system optimizes hydraulic actuator operations by setting speed and displacement volume setpoints, addressing energy consumption and dynamic behavior challenges in hydraulic systems.

EP4505080B1Active Publication Date: 2025-07-23PARKER HANNIFIN EMEA SARL +1
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Patent Information

Application Number
EP2024714162
Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2023-03-22
Filing Date
2024-03-20
Publication Date
2025-07-23
Estimated Expiration
2044-03-20

AI Technical Summary

Technical Problem

Existing hydraulic systems face challenges in optimizing energy consumption and dynamic behavior due to the complexity of operating systems with adjustable displacement units and variable-speed drives, and existing optimization methods require additional system parameters.

Method used

Implementing a knowledge-based decision system, such as fuzzy logic or a neural network, to set speed and displacement volume setpoints, optimizing these parameters based on expert knowledge, simulations, and experiments to improve energy consumption and dynamic behavior.

Benefits of technology

The method enhances energy efficiency and improves dynamic performance by optimizing speed and displacement volume adjustments using a knowledge-based system, reducing energy consumption and enhancing system responsiveness.

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Abstract

The present invention relates to a method for adjusting a pressure medium supply for at least one hydraulic actuator (1), wherein the actuator (1) is supplied with a pressure medium by a displacement unit (2) adjustable in its displacement volume, the displacement unit (2) is driven by a variable-speed drive (3) and a quantity of pressure medium to be supplied to the actuator is predetermined by a size profile (4), wherein a speed setpoint value of the drive (3) and / or a setpoint value for the displacement volume of the displacement unit (2) is set taking into account a knowledge-based decision system. The invention also relates to a hydraulic system.
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Citation Information

Patent Citations

  • Intelligent control system and method for bivariate electro-hydrostatic actuator

    CN112196843A