Fluid Conveying Control Unit With Multi-Area Parameter Adaptation
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Solution Overview
Problem
Existing fluid delivery devices have limited control behavior, failing to adequately balance environmental friendliness, ease of use, and operational comfort, as their control systems can only use one parameter as a control variable, restricting their ability to achieve all necessary operating states.
Innovation Solution
A control unit with a control system that differentiates parameters such as volume flow, torque, and speed of an electric drive motor across multiple areas of a control characteristic, allowing for focused control on environmental efficiency, noise reduction, and functional performance, enabling dynamic and adaptive control based on specific requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control system uses only one parameter as a control variable, then the control system is simple, but the control behavior is significantly restricted and cannot achieve all necessary operating states
Solution Approach 1:
The control system dynamically switches between different control variables (volume flow, torque, speed) based on the operating area. The control characteristic is divided into multiple areas, and the control variable is adapted dynamically according to the current operating point, enabling versatile control behavior while maintaining manageable system complexity through structured area-based switching.
Solution Approach 2:
The patent changes the controlled parameter depending on the operating area. In different areas of the control characteristic, different parameters (volume flow, torque, speed) are selected as the control variable. This parameter adaptation allows the system to achieve diverse operating states by selecting the most appropriate control variable for each specific operating condition.
2Use of energy by moving object
If the control system focuses on energy efficiency, then environmental friendliness is improved, but other aspects like noise reduction and functional performance may be compromised
Solution Approach 1:
The control characteristic is segmented into multiple areas, each optimized for different operational priorities. One area is dedicated to energy efficiency with volume flow control, while other areas address noise reduction and functional performance. This segmentation allows the system to achieve energy efficiency when needed while maintaining the capability to optimize for other criteria in different operating conditions.
Solution Approach 2:
The control variable is dynamically selected based on the desired operating state. When energy efficiency is the priority, volume flow is controlled; when noise reduction is needed, speed is controlled; when functional performance is critical, torque is controlled. This dynamic adaptation enables the system to achieve multiple operating states including energy-efficient operation without compromising overall versatility.
3Object-affected harmful factors
If the control system optimizes for noise reduction, then ease of operation is improved, but energy efficiency and functional performance may be affected
Solution Approach 1:
The control system dynamically selects speed as the control variable when operating in the noise-reduction area, while using volume flow control in energy-efficient areas and torque control in functional performance areas. This dynamic parameter adaptation allows the system to reduce noise when required while maintaining energy efficiency and functional performance in their respective optimized operating states.
Solution Approach 2:
The control characteristic is divided into distinct areas, with one area specifically optimized for noise reduction through speed control. Other areas maintain energy efficiency and functional performance optimizations. This segmentation allows noise reduction to be achieved without permanently compromising energy efficiency or functional performance, as the system can switch to appropriately optimized areas when those criteria become priorities.
4Productivity
If the control system maximizes hydraulic flow for functional performance, then fluid delivery function is improved, but energy efficiency and noise control are compromised
Solution Approach 1:
The control variable is dynamically selected as torque when operating in the functional performance area to maximize fluid delivery, while switching to volume flow control for energy efficiency and speed control for noise reduction in their respective areas. This dynamic adaptation enables the system to maximize hydraulic flow when functional performance is the priority while maintaining energy efficiency and noise control capabilities in other operating states.
Solution Approach 2:
The control characteristic is segmented into different areas with distinct optimization goals. One area is dedicated to functional performance with torque control for maximizing fluid delivery, while other areas address energy efficiency and noise reduction. This segmentation allows the system to achieve high productivity when needed while preserving energy efficiency and noise control in their own optimized areas.
Data Source
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AI summary
The invention relates to a control unit (10) for a fluid conveying device (100), with a control system (12) which is configured to control the fluid conveying device (100) according to a predetermined control characteristic curve, wherein the control characteristic curve of the control system (12) has several areas and the parameters of the fluid conveying device (100) corresponding to the controlled variable of the control system (12), which are brought to a certain value and/or kept at a certain value by the control system (12), differ from each other in at least two areas of the control characteristic curve.