Modular Electropneumatic Controller for Flexible Function Expansion
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Solution Overview
Problem
Existing electropneumatic controllers lack flexibility in functionality adaptation without compromising compact dimensions, making it difficult to customize their operation for various application scenarios without modifying the control unit.
Innovation Solution
The introduction of a modular design with a carrier module and extension module arrangement, allowing the control unit and extension modules to be independently mounted and exchanged, enabling the adaptation of the controller's functionality without influencing each other, and allowing for direct pressurized air connection to the actuator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the controller is designed with integrated functionality, then the structure is compact and simple, but the adaptability to different applications is limited
Solution Approach 1:
The controller is divided into a control unit and a carrier module with separated interfaces. The control unit contains control electronics and control valve means, while the carrier module contains the actuator mounting interface and extension interface. This segmentation allows independent replacement and configuration of components, enabling functionality adaptation without redesigning the entire controller structure.
Solution Approach 2:
The carrier module is designed as a universal base that can accommodate different control units and extension modules through standardized interfaces. The extension interface allows optional mounting of extension modules to provide additional functions beyond basic control, making the controller adaptable to various application scenarios while maintaining a compact core structure.
2Ease of repair
If the control unit is integrated with the carrier module, then the controller is compact, but maintenance and component replacement are difficult
Solution Approach 1:
The control unit is separated from the carrier module with a defined interface, allowing the control unit to be independently removed and replaced. This segmentation enables maintenance personnel to replace the control unit without affecting the carrier module or actuator mounting, significantly improving ease of repair while maintaining a compact overall structure through the standardized interface design.
3Adaptability or versatility
If extension functions are integrated into the control unit, then the functionality is comprehensive, but the control unit becomes complex and less flexible
Solution Approach 1:
Extension functions are separated from the control unit and implemented as optional extension modules that mount on the extension interface of the carrier module. This segmentation allows the control unit to remain simple and focused on basic control functions, while extension modules can be added or removed based on specific application requirements, providing functionality extension without increasing control unit complexity.
Solution Approach 2:
The controller configuration is made dynamic through the optional mounting of extension modules on the extension interface. Users can adapt the controller functionality to different applications by selectively adding or removing extension modules, allowing the system to evolve and adapt without redesigning the core control unit.
Data Source
AI summary
An electropneumatic control apparatus, which has a carrier module, on which a control unit, which is equipped with control electronics and control valve elements, and an expansion module assembly, which has at least one expansion module, are installed independently of each other. By means of a drive fastening interface, the control apparatus can be installed on the actuating drive to be controlled, in order to form a process control device.