Tapered Structure Roll Control for Precise Diameter and Edge Alignment
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Solution Overview
Problem
Current control systems for constructing tapered structures, such as wind turbine towers, face challenges in achieving substantially continuous and accurate construction due to additional degrees of freedom involved in forming tapered shapes, leading to errors and inefficiencies in manufacturing.
Innovation Solution
A control system that includes sensors providing feedback to adjust the positions of rolls and the stock material in a machine forming tapered structures, using a model to control the relative positions of rolls and the infeed adjustment mechanism to ensure accurate diameter control and edge alignment, thereby facilitating the formation of error-free tapered structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional control systems are used for constructing tapered structures, then the construction process can proceed, but manufacturing precision and accuracy deteriorate due to additional degrees of freedom in forming tapered shapes
Solution Approach 1:
The control system dynamically adjusts the positions of multiple rolls (including bend rolls and guide rolls) and the infeed mechanism in real-time during the forming process. This dynamic adjustment capability allows the system to compensate for the additional degrees of freedom introduced by tapered shape formation, maintaining manufacturing precision by adapting roll positions as the structure is being constructed.
Solution Approach 2:
The control system incorporates feedback mechanisms that continuously monitor the formation process and automatically adjust roll positions and infeed parameters. This closed-loop feedback control enables the system to counteract errors and maintain accuracy despite the complexity of forming tapered structures with multiple degrees of freedom.
2Productivity
If manual adjustment of machine parameters is used, then the control system is simpler, but productivity and manufacturing efficiency deteriorate due to inability to continuously adjust parameters
Solution Approach 1:
The control system is pre-programmed with the tapered structure geometry and forming parameters. Before construction begins, the system automatically calculates and prepares the sequence of roll positions and infeed adjustments needed, enabling continuous automated operation without manual intervention during the actual forming process.
Solution Approach 2:
The control system automatically monitors and adjusts its own operating parameters (roll positions, infeed rate) based on real-time feedback from the forming process. This self-regulating capability enables continuous automated operation, eliminating the need for manual parameter adjustments and significantly improving productivity.
3Manufacturing precision
If continuous adjustment of roll positions is implemented, then manufacturing precision improves, but device complexity increases due to additional adjustment mechanisms
Solution Approach 1:
The control system serves multiple functions simultaneously: it controls bend roll positions, adjusts guide roll positions, regulates infeed rate, and coordinates the joining element operation. This multi-functional integrated control reduces the need for separate adjustment mechanisms for each function, managing device complexity while enabling continuous precise adjustment of all parameters.
Solution Approach 2:
The control system merges the adjustment mechanisms for multiple rolls and the infeed mechanism into a coordinated system controlled by a single integrated controller. This consolidation allows continuous adjustment of all parameters through a unified control architecture, improving precision while managing overall system complexity through integration.
4Manufacturing precision
If automated feedback control is implemented, then manufacturing precision improves, but device complexity increases due to sensor and controller integration
Solution Approach 1:
Sensors are integrated into the forming system to continuously monitor edge positions and other critical parameters. This feedback information is automatically processed by the controller, which adjusts roll positions and infeed parameters in real-time to maintain edge alignment accuracy, improving precision through automated closed-loop control.
Solution Approach 2:
The control system acts as an intermediary between the physical forming process and the adjustment mechanisms. Sensors detect actual positions and parameters, the controller processes this information against the desired tapered geometry, and automatically commands the adjustment mechanisms to correct any deviations, enabling precise edge alignment through automated feedback control.
Data Source
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.