Modular Process Line Control for Dynamic Plant Reconfiguration
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Solution Overview
Problem
Existing industrial process control systems are inflexible and require costly rebuilds when changes in process line sequences or layouts are needed, with PLCs having limited configurability and integration issues into larger systems, leading to manual and complex maintenance.
Innovation Solution
A modular control system with a dynamically adaptive architecture that allows easy reconfiguration of process lines through a line control system interfacing with machine control systems via network channels, using a control logic layer to dynamically adjust the process layout based on configuration parameters and machine-specific identifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional PLC-based control systems are used, then system stability and reliability are maintained, but adaptability and flexibility of process line reconfiguration deteriorate
Solution Approach 1:
The control system is divided into modular control units, each responsible for specific process line segments. These modular units can be independently configured, installed, and reconfigured without affecting the entire system, enabling flexible adaptation while maintaining manageable complexity through standardized interfaces and encapsulated functionality.
Solution Approach 2:
The control system transitions from static PLC programming to dynamic configuration where control parameters, process sequences, and machine assignments can be modified in real-time through software without hardware changes. This dynamic adaptability allows the system to respond to changing production requirements while maintaining system stability through controlled parameter adjustments.
2Productivity
If process line reconfiguration is performed manually, then system stability is maintained, but loss of time and productivity deteriorate
Solution Approach 1:
The control system automatically detects the presence and status of machines through network communication, self-configures control parameters based on detected machine capabilities, and autonomously generates control sequences. This self-service capability eliminates manual configuration time and reduces downtime during reconfiguration events.
Solution Approach 2:
The system pre-configures control parameters and sequences based on machine identification and capability detection before actual production begins. Control programs are generated in advance during machine setup or idle periods, so that when reconfiguration is needed, the system can switch to pre-prepared configurations immediately, minimizing productivity loss.
3Adaptability or versatility
If centralized control architecture is used, then system stability and monitoring capability are improved, but adaptability to distributed reconfiguration deteriorates
Solution Approach 1:
The control architecture is segmented into hierarchical levels with a central supervisory controller for monitoring and coordination, and distributed modular control units for local decision-making and execution. This segmentation enables the central system to maintain oversight and stability while individual modules independently adapt to reconfiguration needs, balancing adaptability with ease of operation.
Solution Approach 2:
A standardized communication interface and control logic layer act as intermediaries between the centralized supervisory system and distributed modular control units. This intermediary layer translates high-level supervisory commands into module-specific operations and aggregates local status information, enabling centralized monitoring while preserving distributed adaptability.
Data Source
AI summary
Proposed is system and method for modular control system providing a dynamically adaptive process control of a process line of a plant in a Machine-to-Machine network. The process line of the plant comprises a plurality of distributed machine control system with one or more elements interlocked to one or more operational unit of the process line. The operation of an operational unit performing a physical function within the process line is controlled by an associated machine control system by means of the elements interlocked to the operational units. The interlocked elements at least comprise IO-interfaces and actor control devices.