Control device and method for controlling a tag axle steering system
AssigneeScania CV AB
InventorsLars Soldagg, Christofer Öman
Life of this patent
Estimating the term…
Abstract
A control device and method for controlling a tag axle steering system, configured to steer tag axle wheels of a tag axle, are provided. The method comprises, when the steering angle of the tag axle wheels is offset from a steering angle of a neutral position of the tag axle wheels and in response to a fault signal indicating malfunction of the tag axle steering system, locking the position of the tag axle wheels at a current steering angle of the tag axle wheels. A computer program and a computer-readable medium, as well as a vehicle, are also disclosed.
Claims13
A method, performed by a control device, for controlling a tag axle steering system, said tag axle steering system being configured to steer tag axle wheels of a tag axle in dependence of information obtained from a front axle steering system of a vehicle and/or an articulation control system of the vehicle, wherein said front axle steering system is configured to steer front wheels of the vehicle, and wherein said articulation control system is configured to monitor and/or control at least one articulation parameter representing an articulation state of the vehicle,
- the method comprising:
- determining that a steering angle of the tag axle wheels is offset from a steering angle of a neutral position of the tag axle wheels and that a fault signal indicates a malfunction of the tag axle steering system;
- in response thereto, locking the position of the tag axle wheels at a current steering angle of the tag axle wheels;
- determining that a predefined condition is fulfilled while the position of the tag axle wheels is locked at said current steering angle of the tag axle wheels;
- and
- in response thereto, releasing the tag axle wheels to a caster steer mode.
A computer program product for controlling a tag axle steering system, the computer program product comprising a non-transitory computer-readable medium comprising instructions which, when executed by a control device, cause the control device to:
- determining that a steering angle of the tag axle wheels is offset from a steering angle of a neutral position of the tag axle wheels and that a fault signal indicates a malfunction of the tag axle steering system;
- in response thereto, locking the position of the tag axle wheels at a current steering angle of the tag axle wheels;
- determining that a predefined condition is fulfilled while the position of the tag axle wheels is locked at said current steering angle of the tag axle wheels;
- and
- in response thereto, releasing the tag axle wheels to a caster steer mode.
A control device configured to control a tag axle steering system, wherein the control device is configured to:
- determining that a steering angle of the tag axle wheels is offset from a steering angle of a neutral position of the tag axle wheels and that a fault signal indicates a malfunction of the tag axle steering system;
- in response thereto, locking the position of the tag axle wheels at a current steering angle of the tag axle wheels;
- determining that a predefined condition is fulfilled while the position of the tag axle wheels is locked at said current steering angle of the tag axle wheels;
- and
- in response thereto, releasing the tag axle wheels to a caster steer mode.
A vehicle comprising:
- a tag axle steering system configured to steer tag axle wheels of a tag axle of the vehicle, said tag axle steering system being configured to steer tag axle wheels of a tag axle in dependence of information obtained from a front axle steering system of a vehicle and/or an articulation control system of the vehicle, wherein said front axle steering system is configured to steer front wheels of the vehicle, and wherein said articulation control system is configured to monitor and/or control at least one articulation parameter representing an articulation state of the vehicle;
- and
- a control device in communication with the tag axle steering system, wherein the control device is configured to:
- determining that a steering angle of the tag axle wheels is offset from a steering angle of a neutral position of the tag axle wheels and that a fault signal indicates a malfunction of the tag axle steering system;
- in response thereto, locking the position of the tag axle wheels at a current steering angle of the tag axle wheels;
- determining that a predefined condition is fulfilled while the position of the tag axle wheels is locked at said current steering angle of the tag axle wheels;
- and
- in response thereto, releasing the tag axle wheels to a caster steer mode.
A method performed by a control device, for controlling a tag axle steering system, said tag axle steering system being configured to steer tag axle wheels of a tag axle in dependence of information obtained from a front axle steering system of a vehicle and/or an articulation control system of the vehicle, wherein said front axle steering system is configured to steer front wheels of the vehicle, and wherein said articulation control system is configured to monitor and/or control at least one articulation parameter representing an articulation state of the vehicle, the method comprising:
- determining that a steering angle of the tag axle wheels is offset from a steering angle of a neutral position of the tag axle wheels by a value exceeding a predefined threshold value and that a fault signal indicates a malfunction of the tag axle steering system;
- and
- in response thereto, locking the position of the tag axle wheels at a current steering angle of the tag axle wheels.
Dependencies are inferred from the claim text.