Hydraulic Feedback Assembly With Electronic Pressure Signal Control
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Solution Overview
Problem
Current hydraulic assemblies for agricultural towing vehicles lack efficient control mechanisms, leading to susceptibility to faults and inefficient power delivery to attachments, with slow response times and potential for unnecessary power losses.
Innovation Solution
A hydraulic assembly that incorporates a hydraulic-electric conversion system, including a pressure sensor and electrical control unit, to generate feedback signals for electronic control of the hydraulic system, reducing the need for conventional hydraulic control and incorporating a hydraulic logic element for precise pressure adjustment and flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydraulic control is used, then the hydraulic coupling structure is simple, but the system is susceptible to faults and has slow response times
Solution Approach 1:
The patent replaces conventional hydraulic control mechanisms with an electronic control system. A sensor detects hydraulic parameters (pressure, flow rate) and converts them into electrical signals, which are then processed by an electronic control unit that actuates pump controllers. This substitution of mechanical/hydraulic control with electronic control improves system reliability and response time while reducing susceptibility to faults in the hydraulic coupling structure.
2Productivity
If electronic control is implemented, then response times are shorter and control precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback control system where sensors continuously monitor hydraulic parameters (pressure, flow rate) and convert them into electrical signals. These signals are fed back to an electronic control unit that processes the information and adjusts pump operation in real-time. This feedback mechanism enables precise control with short response times, as the system can dynamically respond to changing conditions without manual intervention.
Solution Approach 2:
The patent replaces mechanical control linkages with electronic sensors and control units. The sensor converts hydraulic parameter variations into electrical signals, which are processed electronically to control pump actuators. This electronic substitution eliminates mechanical friction and inertia, achieving faster response times and more precise control while the modular electronic architecture manages system complexity.
3Reliability
If hydraulic components are reduced, then the hydraulic coupling is less susceptible to faults, but the control precision may be compromised
Solution Approach 1:
The patent reduces the number of hydraulic control components by replacing them with electronic sensors and control units. Sensors detect hydraulic parameters and convert them into electrical signals for precise electronic processing. This reduction in hydraulic components decreases the system's susceptibility to faults (fewer seals, valves, and hydraulic linkages to fail) while electronic measurement and control provide equal or superior precision compared to mechanical alternatives.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the efficiency and reliability of hydraulic power delivery to attachments by reducing faults, improving response times, and minimizing power losses, resulting in more efficient operation and lower costs.
Implementation Method 1
Hydraulic-electric conversion of the feedback pressure into the feedback signal takes place between the hydraulic feedback port and the signal port
Data Source
AI summary
A hydraulic assembly for supplying an attachment with hydraulic power of an agricultural towing vehicle, including a hydraulic work port for the passage of a hydraulic medium delivered by a pump, a pressure port, hydraulically connected to the work port, for delivering hydraulic power to the attachment, a hydraulic feedback port for receiving a hydraulic feedback pressure from the attachment, a signal port for delivering a feedback signal in dependence on the hydraulic feedback pressure, and a pressure sensor, between the hydraulic feedback port and the signal port, for conversion of the feedback pressure into the feedback signal.