Trailer Trajectory Display for Combination Vehicle Reversing
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Solution Overview
Problem
Drivers of combination vehicles face difficulty in accurately grasping the behavior of a trailer, making reverse maneuvers challenging due to the trailer's independent movement dynamics.
Innovation Solution
A control device for combination vehicles that includes a state quantity acquisition process, predicted trajectory information calculation process, and display process, utilizing sensors and a display device to provide predicted trajectory information, assisting the driver in reverse maneuvers by controlling the tractor's steering and displaying the trailer's predicted path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the driver manually controls the trailer during reverse maneuvers, then the driver has direct control over the trailer's movement, but the driver cannot accurately grasp the trailer's behavior due to its independent movement dynamics
Solution Approach 1:
The system creates a virtual copy of the trailer's movement by calculating and displaying predicted trajectory information based on the trailer's current state quantity (position, orientation, speed). This virtual representation allows the driver to accurately grasp the trailer's behavior without directly observing the physical trailer, resolving the measurement precision issue while maintaining manual control ease.
Solution Approach 2:
The system performs preliminary calculation of the trailer's predicted trajectory before the driver executes the reverse maneuver. By acquiring the trailer's state quantity and computing its future path in advance, the system provides the driver with foresight into the trailer's behavior, enabling more accurate and confident manual control during reverse operations.
2Measurement precision
If the system displays predicted trajectory information of the trailer, then the driver can accurately grasp trailer behavior, but the device complexity increases due to additional sensors and calculation processes
Solution Approach 1:
The control device performs multiple functions using a single integrated system: it acquires the trailer's state quantity (position, orientation, speed), calculates the predicted trajectory, and displays the trajectory information to the driver. This multi-functional approach achieves high measurement precision without proportionally increasing device complexity, as the same hardware platform handles sensing, computation, and display tasks.
Data Source
AI summary
A control device is applied to a combination vehicle including a tractor and a trailer that is towed by the tractor. The control device is configured to perform a state quantity acquisition process, a predicted trajectory information calculation process, and a display process. The state quantity acquisition process is a process of acquiring a state quantity of the combination vehicle. The predicted trajectory information calculation process is a process of calculating predicted trajectory information of the trailer according to the state quantity. The display process is a process of displaying the predicted trajectory information by operating a display device.