Tapered Structure Roll Control With Feedback-Guided Diameter Adjustment
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Solution Overview
Problem
Current control systems for constructing tapered structures, such as wind turbine towers, lack the capability for continuous and accurate adjustment of machinery to produce error-free tapered shapes, as they fail to manage the additional degrees of freedom required for such structures.
Innovation Solution
A control system that includes sensors providing feedback to adjust the position of rolls and the stock material in a machine with at least three rolls, including a bend roll and guide rolls with rollette banks, to precisely control the diameter of the tapered structure, using a controller to send signals for continuous adjustment and joining of edges during the rolling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional control systems are used for constructing tapered structures, then the manufacturing process is simpler, but the manufacturing precision and reliability deteriorate due to inability to manage additional degrees of freedom
Solution Approach 1:
The control system dynamically adjusts the positions of multiple rolls (including bend rolls and guide rolls) and the infeed system during the rolling process to accommodate the changing degrees of freedom required for tapered structure formation. This dynamic adjustment capability enables continuous precision control throughout the manufacturing process.
Solution Approach 2:
The control system incorporates feedback mechanisms that continuously monitor the positions of rolls and stock material, and automatically adjust parameters to maintain manufacturing precision. This closed-loop control compensates for the complexity of multiple degrees of freedom by using real-time data to optimize the forming process.
2Productivity
If manual adjustment of machine parameters is used, then the device complexity is lower, but the productivity and manufacturing precision deteriorate due to inability to perform continuous automatic adjustment
Solution Approach 1:
The control system is designed to automatically manage the complex coordination of multiple rolls and infeed adjustments without continuous human intervention. The system self-regulates the degrees of freedom involved in tapered structure formation, enabling high-speed continuous production while maintaining precision.
Solution Approach 2:
The control system integrates multiple functions including roll positioning, infeed adjustment, and process monitoring into a single automated system. This multi-functional approach increases productivity by coordinating all adjustments through one system while managing the inherent complexity of tapered structure formation.
3Manufacturing precision
If continuous automatic adjustment is implemented, then the manufacturing precision and productivity improve, but the device complexity increases due to additional sensors, controllers, and adjustment mechanisms
Solution Approach 1:
The control system merges the functions of multiple sensors, actuators, and control algorithms into an integrated system that manages all degrees of freedom simultaneously. This consolidation reduces the apparent complexity by coordinating components as a unified system rather than separate elements.
Solution Approach 2:
The system achieves high manufacturing precision by dynamically changing multiple parameters (roll positions, infeed rate, guide roll angles) in a coordinated manner. This multi-parameter control approach manages device complexity by transforming it into a controllable set of variable adjustments that work together to achieve the desired tapered geometry.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A control system for forming a tapered structure includes a sensor providing feedback for a machine for forming a tapered structure including at least three rolls having at least one bend roll and at least two guide rolls. The guide rolls may include rollette banks having a plurality of rollettes. The machine may also include an adjustment mechanism to position at least one of the rolls, where a diameter of the tapered structure being formed is controlled by relative positions of the rolls. The machine may also include a joining element to join edges of a stock of material together as it is rolled through the rolls to form the tapered structure. The control system may also include a controller to receive feedback from the sensor and to send a control signal based on the feedback to the adjustment mechanism for positioning at least one of the rolls.