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Trailer control system
| Details |
Inventors: Oh, Pahngroc; Funke, Scott; Pavlov, Kevin J.;
Assignee: Visteon Global Technologies, Inc. (Dearborn, MI)
Primary Examiner: Cuchlinski, Jr.; William A.
Assistant Examiner: Gibson; Eric M
Attorney, Agent or Firm: Brinks Hofer Gilson & Lione
A trailer control system incorporates sensors on both the trailer and a tow vehicle towing the trailer to measure operating parameters of both the trailer and the tow vehicle or prime mover. A computer mounted in the trailer or in the tow vehicle gathers input data from the sensors, including a variety of measurements of force, displacement, and temperature for the tow vehicle, the trailer, and their components. The computer may also be used to apply braking forces to the wheels of the trailer. Using the simulator, a variety of components on the trailer may be tested, their performance measured, and a better trailer may be designed. A trailer may also incorporate such a system for better control of the trailer and the combination vehicle of which it is a part. |
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DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS FIG.
1 depicts possible situations in operation of a combination vehicle having a prime mover 110 and a trailer 120.
In the upper sequence, the tow vehicle and its trailer may experience a jack-knife response to a 0.
5 g deceleration (hard braking) applied by the driver of the tow vehicle.
The upper sequence depicts a vehicle without a combination vehicle stabilization or control program.
The lower sequence, by contrast, shows a much more controlled response and much less jack-knifing when the same deceleration is applied, but a control program is in use to control the motion of the trailer.
FIG.
2 depicts another situation in which combination vehicle stability is in question.
The upper sequence depicts a lane change situation for a combination prime mover 210-trailer 212 vehicle attempting a lane change.
In this situation, lateral forces on the trailer and the truck have combined to move the combination vehicle in a manner that is presumably not desired by the operator.
The lower sequence depicts a combination prime mover 220-trailer 222 having a control program.
In the lower sequence, the combination vehicle with the control program is better able to control side forces and guide the combination vehicle in the desired direction.
FIG.
3 depicts the nature of at least one problem encountered when a combination vehicle changes direction.
The vehicle may change direction in an intentional manner, as in making a turn or changing a lane of traffic.
The vehicle may also change direction unintentionally, for instance, when the driver decelerates rapidly.
In this latter case, a direction change is not desired, but when the direction change occurs it must be controlled or the result may be as depicted in FIG.
1 or 2.
The combination vehicle in the upper sequence 300 demonstrates over-steering while making a left turn.
In this example, the driver has turned the wheels too far to the left, causing the prime mover 310 to move too far to the left and the trailer 320 to move too far to the right
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Navigation and GPS 
