Servo Valve Nozzle Adjustment Using Closed-Loop Flow Divider Feedback
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Solution Overview
Problem
Manual adjustment of servo valves is unsafe due to operating pressure and lacks standardization, preventing automation and precise positioning of the nozzle relative to the flow divider.
Innovation Solution
A system with a positioning unit, measuring unit, and control unit automatically adjusts the nozzle relative to the flow divider based on pressure and flow rate measurements, eliminating manual intervention and ensuring precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment is used, then the operator can position the nozzle, but safety is compromised due to operating pressure
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated positioning system. The control unit receives target values for pressure and flow rate, calculates required nozzle positions, and actuates the nozzle positioning mechanism automatically, eliminating the need for operators to manually tap on pressurized components.
Solution Approach 2:
The system enables self-adjustment through automated control. The control unit autonomously determines the optimal nozzle position based on measured pressure and flow rate deviations from target values, and automatically positions the nozzle without human intervention, making the system self-correcting.
2Ease of operation
If manual adjustment is used, then positioning can be performed, but standardization is difficult due to subjective components
Solution Approach 1:
The system implements closed-loop feedback control. Sensors continuously measure pressure and flow rate, the control unit compares these measurements with target values, and automatically adjusts the nozzle position to minimize deviations. This standardized feedback mechanism eliminates subjective judgment and ensures consistent positioning.
Solution Approach 2:
The patent replaces subjective manual judgment with objective automated control algorithms. The control unit uses mathematical calculations based on measured deviations to determine precise positioning adjustments, replacing the operator's subjective assessment with standardized computational logic.
3Ease of operation
If manual adjustment is used, then the process can be performed, but automation is prevented
Solution Approach 1:
The patent replaces the entire manual adjustment process with an automated control system. The control unit autonomously performs measurement evaluation, calculation of required adjustments, and actuation of positioning mechanisms, transforming a manual process into a fully automated one.
Solution Approach 2:
The system performs self-adjustment without external intervention. The control unit continuously monitors system parameters, automatically determines when adjustment is needed, and executes positioning corrections autonomously, making the adjustment process self-service and fully automatable.
4Object-affected harmful factors
If automated positioning is implemented, then safety is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it processes sensor signals, calculates optimal positions, controls positioning actuators, and monitors system status. By consolidating these functions into a single multi-functional control device, the patent minimizes the increase in overall system complexity while achieving automated safe operation.
Solution Approach 2:
The patent merges the control functions with the existing measurement and actuation systems. The control unit integrates with the pressure sensors, flow rate sensors, and nozzle positioning mechanism that already exist in the system, combining multiple components into a coordinated automated system rather than adding entirely separate subsystems.
Data Source
AI summary
The present invention relates to a system for adjusting a valve, in particular a servo valve, wherein the valve comprises a nozzle and a flow divider, with a positioning unit which is configured to position the nozzle relative to the flow divider, a measuring unit which is configured to determine a pressure and/or flow rate in at least one line branching off from the flow divider, and a control unit which is configured to control the positioning unit to position the nozzle relative to the flow divider based upon a pressure and/or flow rate determined by the measuring unit, and a control unit which is configured to control the positioning unit based upon a pressure and/or flow rate determined by the measuring unit in order to position the nozzle relative to the flow divider in such a way that a desired pressure and/or flow rate results in the at least one line.