Method for setting the parameters of a control of a pressure supply system of a hydraulic system and method for controlling a pressure supply system of a hydraulic system

The method enhances hydraulic system control by dynamically adjusting parameters based on system characteristics, improving accuracy and stability through a control algorithm with estimation and parameter setting, addressing suboptimal performance in existing systems.

WO2026131090A1PCT designated stage Publication Date: 2026-06-25ROBERT BOSCH GMBH
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ROBERT BOSCH GMBH
Filing Date
2025-12-02
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing hydraulic systems lack effective methods for adapting control algorithms to dynamically adjust parameters based on system characteristics, leading to suboptimal performance and stability issues, especially during changes or commissioning.

Method used

A method for parameter setting and control of hydraulic systems using a control algorithm with adjustable parameters, involving an estimation procedure to determine hydraulic capacity and setting time constants, and adjusting controller parameters based on these values to enhance control accuracy and stability.

Benefits of technology

The method improves control accuracy and stability by adapting the control algorithm to the hydraulic system's dynamics, ensuring robustness and efficient operation during changes or commissioning.

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    Figure EP2025085051_25062026_PF_FP_ABST
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Abstract

The invention relates to a method for setting the parameters of a control of a pressure supply system of a hydraulic system, wherein the pressure supply system has a motor (4) and a hydraulic machine (2) that are controlled with a manipulated variable, wherein the control (160) is implemented by a control algorithm, wherein the control algorithm is parameterised by one or more parameters that can be set or changed during operation, the method comprising: carrying out (110), during operation of the hydraulic system, an estimation method based on a physical model in order to determine an estimated value for at least one characteristic variable of the hydraulic system, wherein the at least one characteristic variable includes a hydraulic capacity of the hydraulic system; determining (120) an adjustment time constant as equal to or greater than a target time constant, by means of which a maximum pressure build-up rate of the hydraulic system is achieved, which is determined by the estimated value for the hydraulic capacity and a maximum volumetric flow rate of the hydraulic machine; setting (150) at least one parameter of the one or more parameters, wherein the at least one parameter is determined (130, 140) by a respective function dependent on the setting time constant.
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