Coupler Node Control in Distributed Power Vehicles
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Solution Overview
Problem
In vehicle systems with distributed power configurations, couplers experience varying tensile and compressive forces, leading to increased wear-and-tear and potential damage, particularly at nodes between sections experiencing different forces, which can result in higher costs, downtime, and disruptions to travel schedules.
Innovation Solution
A control system that monitors coupler forces and identifies nodes between tensile and compressive sections, allowing for independent control of tractive operations to manage the number and location of these nodes, thereby reducing wear-and-tear and maintaining optimal vehicle handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicles operate in a distributed power configuration with coordinated propulsion and braking, then the vehicles can travel together as a system, but couplers experience varying tensile and compressive forces leading to increased wear-and-tear and potential damage
Solution Approach 1:
The control system proactively identifies nodes between tensile and compressive sections and adjusts tractive operations before excessive wear occurs. By monitoring coupler forces and predicting node locations in advance, the system prevents damage rather than reacting to it, thereby maintaining coupler durability while preserving system productivity
Solution Approach 2:
The system dynamically changes operational parameters (tractive effort, braking force) of propulsion-generating vehicles based on real-time coupler force monitoring. By adjusting these parameters in response to identified nodes, the system reduces harmful forces on couplers while maintaining overall vehicle system operation
2Reliability
If coupler forces are monitored and nodes are identified to control tractive operations, then wear-and-tear on couplers is reduced, but the control system complexity increases
Solution Approach 1:
The control system continuously monitors coupler forces and uses this feedback to identify nodes and adjust tractive operations. This closed-loop feedback mechanism automates the complexity, allowing the system to maintain coupler durability through real-time adjustments without requiring manual intervention, thereby managing the increased complexity through self-regulation
Solution Approach 2:
The control system independently manages its own complexity by automatically monitoring, identifying, and responding to coupler force conditions. The system serves itself by making real-time adjustments to tractive operations based on monitored data, reducing wear-and-tear without external intervention, thus handling the control complexity autonomously
Data Source
AI summary
A method for controlling coupler nodes in a vehicle system includes monitoring coupler forces between vehicle units in the vehicle system. The vehicle units include plural propulsion-generating vehicles. The method also includes identifying one or more nodes in the vehicle system based on the coupler forces. The one or more nodes represent one or more respective locations in the vehicle system disposed between a tensile section of the vehicle system experiencing a tensile force and a compressive section of the vehicle system experiencing a compressive force. The method also includes independently controlling tractive operations of the propulsion-generating vehicles based on the one or more nodes that are identified in order to control at least one of a number of the one or more nodes that are identified in the vehicle system or the one or more locations of the one or more nodes.