Valve Torque Feedback Control for Open and Closed Position Detection
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Solution Overview
Problem
Traditional valve torque control systems output a fixed torque based on software algorithms, which cannot determine the open position or fully closed position of the valve and often require excessive or insufficient torque, leading to potential damage or failure.
Innovation Solution
A torque control system comprising a drive unit, detection unit, and control unit that adjusts the torque applied to the valve by generating a control command based on operation signals, including pulse signals and current measurements, to determine the fully open and closed positions and adjust the torque in real-time, preventing excessive or insufficient torque application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed torque is output directly based on software algorithms, then the valve opening and closing function can be satisfied to a certain extent, but the torque selection is either excessive that damages the valve or insufficient that is unable to drive the valve
Solution Approach 1:
The patent implements a feedback mechanism where the control unit receives detection signals from the detection unit about the driving device operation, compares actual valve position with target position, and adjusts the torque output accordingly. This closed-loop control ensures the torque is neither excessive nor insufficient, resolving the reliability issue caused by fixed torque selection.
Solution Approach 2:
The patent transitions from a static fixed torque system to a dynamic torque control system. The control unit dynamically adjusts the torque based on real-time detection signals and valve position feedback, allowing the system to adapt to different operating conditions and prevent both excessive torque damage and insufficient driving capability.
2Productivity
If a fixed torque is output directly according to software algorithms, then the basic valve opening and closing function is satisfied, but the open position and fully closed position of the valve cannot be determined
Solution Approach 1:
The detection unit provides continuous feedback signals to the control unit about the driving device operation and valve position. This feedback mechanism enables the system to accurately determine the open and fully closed positions of the valve, eliminating the information loss present in fixed torque systems.
Solution Approach 2:
The patent replaces the mechanical trial-and-error method for determining valve positions with an electronic detection and control system. The detection unit electronically monitors the driving device operation, and the control unit processes this information to accurately identify valve positions, improving efficiency and eliminating position information loss.
3Device complexity
If a fixed torque is output directly based on software algorithms, then the control system is simple, but different opening and closing torques required by different types of valves cannot be accommodated
Solution Approach 1:
The patent implements a dynamic torque adjustment mechanism where the control unit modifies the torque output based on detection signals and valve-specific requirements. This allows the same control system to adapt to different valve types with different torque requirements without increasing overall system complexity significantly.
Solution Approach 2:
The control unit changes the torque parameter dynamically based on the detected valve operation characteristics and stored valve type parameters. By adjusting the torque parameter according to different valve types and operating conditions, the system achieves high adaptability while maintaining relatively simple control architecture.
Data Source
AI summary
A torque control system is configured to automatically determine the fully open position and fully closed position of the valve without the need of manual operation of the valve. In addition, a control unit of the torque control system can obtain a control parameter based on a driving device operation signal detected by a detection unit, and output a control command to a driving unit to change an operation parameter of the driving device, so that the torque applying by the driving device on the valve can be adjusted, therefore the torque control system of the present application can accurately output the operating torque required by the valve, so that there is no circumstances that the operating torque is too large to damage the valve or the operating torque is too small to be unable to drive the valve.