Railcar Mover Control for Synchronized Multi-Vehicle Traction
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Solution Overview
Problem
Operators of railcar movers face challenges in initiating movement of a pulled load from a dead stop, especially under adverse conditions, and coupling multiple movers presents coordination issues for increased tractive effort.
Innovation Solution
A vehicle control system that includes controllers on each vehicle to determine the orientation and type of connected vehicles, generating control signals to override and combine tractive efforts for synchronized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If two or more railcar movers are coupled to increase tractive effort, then the ability to move larger consists is improved, but the complexity of coordinating control between vehicles increases
Solution Approach 1:
The patent combines multiple vehicle control systems into a unified control architecture where a lead vehicle controller coordinates with follower vehicle controllers. The control systems are merged through communication networks that allow centralized command distribution and synchronized operation, enabling multiple vehicles to function as a coordinated unit for increased tractive effort while managing control complexity through integration.
Solution Approach 2:
The patent introduces communication systems and control intermediaries that facilitate coordination between multiple vehicle controllers. These intermediaries transmit control signals, synchronize operations, and manage the complexity of coordinating multiple vehicles by providing a structured communication framework that simplifies the control architecture.
2Force
If engine throttle and guide wheel jacking pressure are increased to improve traction from dead stop, then the ability to initiate movement is improved, but the risk of wheel slip and loss of control increases
Solution Approach 1:
The patent implements feedback control systems that continuously monitor wheel slip conditions, guide wheel positioning, and traction forces. Sensors detect wheel rotation speeds and compare them to commanded speeds, providing feedback to the control system. When slip is detected, the system automatically adjusts engine throttle and guide wheel jacking pressure to maintain optimal traction while preventing excessive wheel slip and loss of control.
3Adaptability or versatility
If manual operator skill is relied upon to manage vehicle control under adverse conditions, then operational flexibility is maintained, but consistency and reliability of operation decrease
Solution Approach 1:
The patent implements automated control systems that perform functions previously requiring manual operator intervention. The control system automatically adjusts engine throttle, guide wheel positioning, and vehicle coordination based on sensor inputs and pre-programmed control logic. This self-service capability maintains operational flexibility by adapting to different conditions while improving reliability and consistency through automated, repeatable control actions.
Data Source
AI summary
A vehicle control system and method includes a first controller that controls operation of a first vehicle and is operably coupled with a first communication system. A second controller controls operation of a second vehicle and is operably coupled with a second communication system. The first controller determines an orientation of the second vehicle and identifies a type of the second vehicle. The first controller generates a first set of vehicle control signals based on the orientation and the type of the second vehicle. The first communication system communicates the first set of vehicle control signals with the second communication system. The first controller overrides control of the second vehicle by the second controller to control operation of the first vehicle and the second vehicle according to the first set of vehicle control signals.