Hydraulic Pressure Supply Control for Stable Mobile Machine Dynamics
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Solution Overview
Problem
Existing hydraulic pressure supply arrangements for mobile machines suffer from limited dynamic adjustability and stability, leading to jerky movements and inefficiencies due to fixed system dynamics, which are influenced by factors like pump pressure, temperature, and external interference forces.
Innovation Solution
A hydraulic pressure supply arrangement with a control system featuring a first and second control module connected via a data interface, allowing for adjustable hydraulic parameters such as maximum pressure gradient, torque, and flow volume to dynamically control the hydraulic machine's behavior, eliminating the need for hydromechanical damping measures and optimizing system dynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed system dynamics are used in hydraulic pressure supply arrangements, then device complexity is reduced, but stability deteriorates leading to jerky movements
Solution Approach 1:
The patent applies dynamics by making the system parameters adjustable in real-time. The control system allows dynamic adjustment of the maximum pressure gradient and flow volume based on operating conditions, transforming a fixed system into an adaptive one. This resolves the contradiction by enabling stability improvement through parameter adjustment without fundamentally increasing device complexity.
Solution Approach 2:
The patent changes physical parameters (maximum pressure gradient, flow volume) dynamically based on operating conditions. By allowing these parameters to be adjusted in real-time rather than being fixed, the system achieves better stability and responsiveness while maintaining relatively simple device architecture.
2Adaptability or versatility
If hydraulic parameters are dynamically adjustable, then system adaptability improves, but device complexity increases due to additional control modules
Solution Approach 1:
The control modules serve multiple functions: they monitor operating conditions, calculate optimal parameters, and control the hydraulic machine. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity while achieving high adaptability.
Solution Approach 2:
The patent replaces traditional mechanical damping measures with an electronic control system that adjusts hydraulic parameters. This substitution achieves the same stability improvement goal with greater flexibility and potentially lower complexity, as software-based control is more adaptable than mechanical adjustments.
3Productivity
If maximum pressure gradient is increased to improve response speed, then productivity increases, but stability deteriorates causing vibrations
Solution Approach 1:
The system dynamically adjusts the maximum pressure gradient based on real-time operating conditions. Rather than using a fixed high gradient that causes vibrations, the system optimizes the gradient level to achieve fast response when needed while maintaining stability during normal operation, resolving the productivity-stability trade-off.
Solution Approach 2:
The control system monitors operating conditions and uses this feedback to adjust the maximum pressure gradient appropriately. This feedback mechanism ensures that high gradient values are only used when necessary for rapid response, while normal operation uses lower gradient values that maintain stability and reduce vibrations.
Data Source
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AI summary
Disclosed is a hydraulic pressure medium supply arrangement comprising a hydraulic machine for supplying pressure medium to at least one hydraulic consumer, a hydraulic control block for controlling the at least one consumer, and a first and second control module, wherein the control block can be controlled via at least one control signal from the first control module, wherein a data interface is provided between the control modules, and wherein the first control module transmits a target output pressure for the hydraulic machine and/or a target delivery volume for the hydraulic machine to the second control module as an input variable(s) via the data interface, wherein the second control module controls an adjustment mechanism of the hydraulic machine with a valve control signal based on the target output pressure and/or the target delivery volume.and wherein at least one hydraulic parameter and/or another control signal is transmitted to the second control module via the data interface, which defines and/or limits the dynamics of the adjustment mechanism of the hydraulic machine.