Multi-Agent Flow Control Planning Without Centralized Failure Risk

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Solution Overview

Problem

Current flow control systems, whether centralized or distributed, face challenges with fault tolerance, adaptability, and efficiency, particularly in large and complex networks, where a single point of failure can disrupt the entire system, and manual adjustments are often required for changes in flow rates, leading to inefficiencies.

Innovation Solution

A decentralized multi-agent control system with a dynamic topology, where each agent optimizes local parameters and negotiates shared values to generate a global flow control plan, allowing for autonomous adjustments and fault tolerance without a central processor, using a scalable and extensible software architecture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a centralized control system is used for flow control, then system coordination is simplified, but the system becomes vulnerable to single point of failure and lacks fault tolerance

Engineering Contradiction:
Improvefault toleranceVSAvoidsystem architecture complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The centralized control system is segmented into multiple autonomous agents distributed across the flow control network. Each agent manages local flow control independently while communicating with neighboring agents, eliminating the single point of failure inherent in centralized systems. This segmentation provides fault tolerance as failures are localized rather than system-wide.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a single-dimensional centralized hierarchy to a multi-dimensional distributed network topology. Agents operate at multiple levels: local flow control, neighbor negotiation, and global system coordination, creating a resilient architecture that maintains functionality across different operational dimensions even when individual components fail.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If manual adjustments are made for changes in flow rates, then system control is simple, but efficiency decreases and manual intervention is required frequently

Engineering Contradiction:
Improveflow control efficiencyVSAvoidautomatic flow rate adjustment
Core Design Contradiction:
ProductivityVSExtent of automation

Solution Approach 1:

The flow control system performs self-service through autonomous agents that automatically detect flow rate changes, negotiate with neighboring agents, and adjust local control parameters without human intervention. This self-service capability dramatically improves productivity by eliminating manual adjustment requirements while maintaining optimal system performance.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Agents continuously monitor local flow conditions and use feedback from sensor data to automatically adjust control parameters. The feedback loop includes real-time flow rate measurement, comparison with target values, and automatic correction through actuator control, enabling efficient autonomous operation without manual intervention.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If a decentralized multi-agent system is implemented, then fault tolerance and adaptability improve, but communication and coordination between agents become more complex

Engineering Contradiction:
Improvesystem adaptabilityVSAvoidagent communication complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The agent communication topology is dynamic rather than static, allowing agents to adapt their communication patterns based on system conditions, failure states, and negotiation requirements. This dynamic communication structure enhances adaptability as the system can reconfigure information flow in response to changing operational demands and fault conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Agents dynamically adjust communication parameters such as negotiation frequency, data exchange volume, and interaction priority based on system state. This parameter adaptation reduces communication overhead during normal operation while enabling intensive coordination during fault recovery or reconfiguration events, balancing complexity with adaptability.

Inventive Principle:
Principle #35Parameter changes

4Extent of automation

If local optimization is performed by each agent, then system autonomy increases, but achieving global optimization becomes more difficult

Engineering Contradiction:
Improveautonomous local controlVSAvoidglobal flow control precision
Core Design Contradiction:
Extent of automationVSManufacturing precision

Solution Approach 1:

The system merges local optimization results through negotiation and consensus mechanisms. Each agent maintains autonomous local control while periodically sharing optimization outcomes with neighboring agents, combining individual local optima into a coordinated global solution that achieves both autonomy and precision.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

Agents perform preliminary local optimization independently before engaging in negotiation with neighboring agents. This preliminary action allows each agent to establish a baseline optimal state, which then serves as the starting point for coordinated global optimization through communication and mutual adjustment, achieving both autonomy and precision efficiently.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11467552B2Decentralized planning, scheduling and control of multi-agent flow control system
Publication Date: 2022.10.11 SIEMENS CORP
  • US11467552B2 patent drawing
  • US11467552B2 patent drawing
  • US11467552B2 patent drawing

AI summary

Systems and methods are provided for generating a flow control plan for a plurality of components in a flow control system. A decentralized multi-agent control framework is used to plan and schedule for each agent independently without a central processor. Each agent of the multi-agent control framework separately optimizes a local portion of the system as a function of values for one or more parameters. Agents communicate with other connected agents, sharing values for parameters. The communication provides a negotiation and consensus for values of the shared parameters that are used by the agent to recalculate optimized parameters values for the local portion of the system.