Electronic Path Input for Autonomous Trailer Backing
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Solution Overview
Problem
Backing trailers attached to vehicles often require multiple operators and can be difficult for inexperienced users to control accurately, especially when reversing.
Innovation Solution
A method for controlling a vehicle and trailer assembly using an electronic control unit with various input modes, including graphical, voice, and handheld device inputs to define and execute an intended backing path, allowing the system to autonomously or semi-autonomously direct the vehicle and trailer along the specified path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional manual control methods are used for trailer backing, then multiple operators are required to achieve accurate path control, but this increases operational complexity and reduces ease of operation
Solution Approach 1:
The system allows a single operator to independently control trailer backing by directly inputting desired path points into the electronic control unit, eliminating the need for a second operator to guide or correct the path. The operator themselves performs both the steering and path planning functions through the electronic interface.
Solution Approach 2:
The patent replaces the mechanical communication and coordination system between multiple operators with an electronic control system. Instead of verbal instructions and manual adjustments between operators, the system uses electronic input devices and control units to directly translate operator intent into precise steering commands.
2Measurement precision
If multiple operators are used to control trailer backing, then path control accuracy improves, but the time required for the operation increases
Solution Approach 1:
The single operator simultaneously performs path planning and vehicle control functions that previously required two operators, eliminating the time lost in communication and coordination between operators while maintaining accurate path control through direct electronic input.
Solution Approach 2:
The operator can pre-plan and input the entire desired backing path into the electronic control unit before executing the maneuver, allowing the system to automatically follow the predetermined path without requiring real-time adjustments or second-operator guidance during the actual backing operation.
3Adaptability or versatility
If inexperienced users operate the trailer backing system, then operational flexibility is maintained, but path control accuracy deteriorates
Solution Approach 1:
The electronic control system replaces the skill-based manual coordination required by inexperienced operators with automated electronic path following. The system translates simple electronic path inputs into precise steering commands, compensating for the operator's lack of experience in judging distances and angles.
Solution Approach 2:
The electronic control unit acts as an intermediary between the operator's simple path point inputs and the complex steering requirements. It performs the calculations and generates the precise steering commands that would otherwise require skilled manual judgment, allowing inexperienced users to achieve accurate path control.
Data Source
AI summary
A method of controlling a backing system for a vehicle and trailer assembly comprises initiating a path input mode on an electronic input device associated with an electronic control unit in the vehicle. An intended backing path is input into the electronic control unit by defining the intended backing path with an input control mechanism for the electronic input device. The path input mode on the electronic input device is ended.