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公开(公告)号：US11673619B2
公开(公告)日：2023-06-13
申请号：US16560452
申请日：2019-09-04
申请人： DEERE & COMPANY
发明人： Scott A. Hudson
CPC分类号： B62D49/0621 , B60W10/20 , B62D7/15 , B62D12/00 , B60W2540/18
摘要： An automatic steering system and method for an articulated work vehicle having a front wheel steering system supported by front wheels at a front frame and a rear frame supported by rear wheels rotatably coupled to the front frame at an articulator. A controller operatively connected to the front wheel steering system and to the articulator adjusts wheels of the front wheel steering system along a path and moves the articulator to direct the rear frame in response to a steering signal. The steering signal directs the vehicle in a minimum turn radius mode or a controlled traffic control mode. In the minimum turn radius mode, the rear wheels do not follow the tracks of the front wheels when making a turn. In the controlled traffic mode the rear wheels follow in same tracks as the front wheels.
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公开(公告)号：US20210078630A1
公开(公告)日：2021-03-18
申请号：US16574600
申请日：2019-09-18
申请人： Deere & Company
发明人： Scott A. Hudson , Nohoon Ki , Jeffrey M. Tott
摘要： Operating a vehicle in an automated steering control mode wherein the vehicle includes a controller operatively coupled with an articulated steering system and a front axle steering system. The controller is configured to identify a desired path of curvature of the vehicle and determine a front axle steering angle of the front axle steering system and command the front axle steering system to operate at the front axle steering angle and also determine an articulation steering angle of the articulated steering system and command the articulated steering system to operate at the articulation steering angle. A further form includes operating front and rear ground engaging means at a designated speed, and thereafter operating the articulated steering system and the front axle steering system based on the designated speed being greater than a transport speed threshold, less than a field speed threshold or between the two.
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公开(公告)号：US09802585B2
公开(公告)日：2017-10-31
申请号：US14553017
申请日：2014-11-25
申请人： Deere & Company
摘要： A linkage assembly couples a plunger of a brake valve to a manually operated brake input member. The linkage assembly includes a pushrod and a resilient member. The pushrod has an end member which is engagable with the plunger. The resilient member is attached to the pushrod end member. The resilient member has an end which is engagable with the plunger when the pushrod end member is spaced apart from the plunger. The resilient member deforms to allow the pushrod end member to directly engage the plunger when the pushrod end member is moved towards the plunger. One of the end and resilient members surrounds a portion of the other of the end and resilient members. The resilient member may be a sleeve which surrounds an end portion of the pushrod. Or, the resilient member may be surrounded by a hollow end portion of the pushrod.
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公开(公告)号：US11667326B2
公开(公告)日：2023-06-06
申请号：US16574600
申请日：2019-09-18
申请人： Deere & Company
发明人： Scott A. Hudson , Nohoon Ki , Jeffrey M. Tott
摘要： Operating a vehicle in an automated steering control mode wherein the vehicle includes a controller operatively coupled with an articulated steering system and a front axle steering system. The controller is configured to identify a desired path of curvature of the vehicle and determine a front axle steering angle of the front axle steering system and command the front axle steering system to operate at the front axle steering angle and also determine an articulation steering angle of the articulated steering system and command the articulated steering system to operate at the articulation steering angle. A further form includes operating front and rear ground engaging means at a designated speed, and thereafter operating the articulated steering system and the front axle steering system based on the designated speed being greater than a transport speed threshold, less than a field speed threshold or between the two.
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公开(公告)号：US11440551B2
公开(公告)日：2022-09-13
申请号：US16560475
申请日：2019-09-04
申请人： Deere & Company
摘要： Steering a vehicle in an electronic steering mode of operation that includes a front axle steering system, a rear axle steering system, one or more vehicle environment sensors, and a controller operatively coupled with the front axle steering system, the rear axle steering system, and the vehicle environment sensors. Commanding the vehicle to operate at a desired vehicle speed, detecting a lateral force acting on the vehicle in response to input from the vehicle environment sensors, and determining an actual lateral acceleration of the vehicle and a predicted lateral acceleration of the vehicle from the desired vehicle speed. Determining a lateral acceleration error by comparing the predicted lateral acceleration to the actual lateral acceleration, and determining if the lateral acceleration error exceeds a lateral acceleration limit, then turning both of the front axle steering system and the rear axle steering system to a crab steering correction angle.
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公开(公告)号：US20210078633A1
公开(公告)日：2021-03-18
申请号：US16574869
申请日：2019-09-18
申请人： Deere & Company
摘要： Vehicles, control systems for vehicles, and methods of operating vehicles are disclosed herein. A vehicle includes a frame structure, a front section, a rear articulation section, and a control system. The front section is coupled to the frame structure and to a front plurality of wheels supported for movement on a front axle. The rear articulation section is coupled to the frame structure and to a rear plurality of wheels supported for movement on a rear axle. The rear articulation section is pivotally coupled to the front section via an articulation joint and arranged opposite the front section along a vehicle axis. The control system is coupled to the frame structure and includes a mode selector configured to provide input indicative of a mode selected by an operator in use of the vehicle and a controller communicatively coupled to the mode selector.
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公开(公告)号：US20210061374A1
公开(公告)日：2021-03-04
申请号：US16560452
申请日：2019-09-04
申请人： DEERE & COMPANY
发明人： Scott A. Hudson
摘要： An automatic steering system and method for an articulated work vehicle having a front wheel steering system supported by front wheels at a front frame and a rear frame supported by rear wheels rotatably coupled to the front frame at an articulator. A controller operatively connected to the front wheel steering system and to the articulator adjusts wheels of the front wheel steering system along a path and moves the articulator to direct the rear frame in response to a steering signal. The steering signal directs the vehicle in a minimum turn radius mode or a controlled traffic control mode. In the minimum turn radius mode, the rear wheels do not follow the tracks of the front wheels when making a turn. In the controlled traffic mode the rear wheels follow in same tracks as the front wheels.
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公开(公告)号：US11702136B2
公开(公告)日：2023-07-18
申请号：US16574869
申请日：2019-09-18
申请人： Deere & Company
CPC分类号： B62D15/025 , B62D12/00 , B62D49/06
摘要： Vehicles, control systems for vehicles, and methods of operating vehicles are disclosed herein. A vehicle includes a frame structure, a front section, a rear articulation section, and a control system. The front section is coupled to the frame structure and to a front plurality of wheels supported for movement on a front axle. The rear articulation section is coupled to the frame structure and to a rear plurality of wheels supported for movement on a rear axle. The rear articulation section is pivotally coupled to the front section via an articulation joint and arranged opposite the front section along a vehicle axis. The control system is coupled to the frame structure and includes a mode selector configured to provide input indicative of a mode selected by an operator in use of the vehicle and a controller communicatively coupled to the mode selector.
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公开(公告)号：US20210061283A1
公开(公告)日：2021-03-04
申请号：US16560475
申请日：2019-09-04
申请人： Deere & Company
摘要： Steering a vehicle in an electronic steering mode of operation that includes a front axle steering system, a rear axle steering system, one or more vehicle environment sensors, and a controller operatively coupled with the front axle steering system, the rear axle steering system, and the vehicle environment sensors. Commanding the vehicle to operate at a desired vehicle speed, detecting a lateral force acting on the vehicle in response to input from the vehicle environment sensors, and determining an actual lateral acceleration of the vehicle and a predicted lateral acceleration of the vehicle from the desired vehicle speed. Determining a lateral acceleration error by comparing the predicted lateral acceleration to the actual lateral acceleration, and determining if the lateral acceleration error exceeds a lateral acceleration limit, then turning both of the front axle steering system and the rear axle steering system to a crab steering correction angle.
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