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公开(公告)号:US11293168B2
公开(公告)日:2022-04-05
申请号:US15908574
申请日:2018-02-28
申请人: Deere & Company
发明人: Aaron R. Kenkel , Grant R. Henn , Doug M. Lehmann
摘要: A control system for a material handling vehicle has a boom arm connected to a vehicle frame for rotation about the vehicle frame. An actuator is connected to the vehicle frame and the boom arm to cause the boom arm to rotate about the vehicle frame, and an attachment is connected to the boom arm for rotation with respect to the boom arm. The control system includes a controller that is configured to calculate a pre-determined acceleration limit of the attachment, and a sensor that senses acceleration of the attachment and communicate the sensed acceleration to the controller. The controller is configured to compare the pre-determined acceleration limit of the attachment to the sensed acceleration of the attachment and is configured to adjust a control valve to limit flow to the actuator in response to the sensed acceleration of the attachment being above the pre-determined acceleration upper limit.
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公开(公告)号:US11136744B2
公开(公告)日:2021-10-05
申请号:US16669646
申请日:2019-10-31
申请人: Deere & Company
发明人: David Myers , Michael R. Gratton , Michael G. Kean , Todd F. Velde , Dustin T. Staade , Matthew Sbai , Ryan Detweiler , Grant R. Henn , Mary B. Wigginton , Aaron R. Kenkel
IPC分类号: E02F9/20 , G07C5/02 , B60T7/22 , B60Q1/02 , B60Q5/00 , B60T8/18 , E02F9/24 , B60T8/171 , B60T8/32 , B60T8/58 , B60Q9/00 , E02F3/28 , E02F9/26 , G07C5/08
摘要: Vehicles and methods of operating vehicles are disclosed herein. A vehicle includes a main frame, a work implement, and a control system. The work implement is supported by the main frame and configured to carry a payload in use of the vehicle. The control system is supported by the main frame and configured to control operation of the vehicle. The control system includes a payload measurement system configured to provide payload input indicative of a variable payload carried by the work implement in use of the vehicle and a controller coupled to the payload measurement system.
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公开(公告)号:US20210131071A1
公开(公告)日:2021-05-06
申请号:US16670115
申请日:2019-10-31
申请人: DEERE & COMPANY
发明人: Michael R. Gratton , David Myers , Aaron R. Kenkel , Michael G. Kean , Mary B. Wigginton , Grant R. Henn , Todd F. Velde , Joseph R. Keene , Dustin T. Staade , Kevin Campbell , Thomas L. Kennedy , Ryan Detweiler , Matthew Sbai
摘要: A work machine includes a chassis, a boom coupled to the chassis, and a work implement coupled to the boom and movable relative to the chassis. In system may further include dynamic payload weighing system configured to measure the payload weight on the work implement. The system may also include an electrohydraulic system controller in communication with the dynamic payload weighing system and an electrohydraulic control valve electrically coupled to the electrohydraulic system controller and moveable to a plurality of weight-specific valve positions based on the measured payload weight on the implement.
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公开(公告)号:US10954650B2
公开(公告)日:2021-03-23
申请号:US15908555
申请日:2018-02-28
申请人: Deere & Company
摘要: A work machine includes a mechanical arm and a work implement coupled to the mechanical arm. The work implement is configured to receive a load. A hydraulic actuator is coupled to the mechanical arm to move the arm between a first position and a second position. A sensor unit is configured to detect the load in the work implement. A valve is in fluid communication with the hydraulic actuator for supplying a fluid output to the hydraulic actuator. A controller is in communication with the value and the sensor unit. The controller is configured to transmit a control signal to the valve to adjust the fluid output to the hydraulic actuator, and wherein the controller is configured to derate the fluid output in response to a signal from the sensor unit that a load is at or above a threshold value.
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公开(公告)号:US10125475B2
公开(公告)日:2018-11-13
申请号:US15428562
申请日:2017-02-09
申请人: Deere & Company
摘要: A method of determining a cycle time of an implement on a work machine includes providing a controller and an actuator for controlling the implement, sending a first instruction from the controller to move the implement to a first position, and sending a second instruction from the controller to move the implement from the first position to a second position. A distance between the first position and the second position is an approximate full stroke of the actuator. The method also includes measuring an amount of time it takes for the implement to move between a first threshold position and a second threshold position. The first threshold position and the second threshold position are defined positions between the first and second positions. The method further includes determining the cycle time of the implement based on the measuring step.
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公开(公告)号:US20170175781A1
公开(公告)日:2017-06-22
申请号:US14971235
申请日:2015-12-16
申请人: DEERE & COMPANY
IPC分类号: F15B13/044 , E02F3/42 , E02F9/22 , F15B11/08 , F15B13/04
CPC分类号: F15B13/044 , E02F3/283 , E02F3/422 , E02F9/2228 , F15B11/08 , F15B13/0401 , F15B2211/30525 , F15B2211/3111 , F15B2211/327 , F15B2211/426 , F15B2211/6309 , F15B2211/6313 , F15B2211/6336 , F15B2211/6346 , F15B2211/665 , F15B2211/853
摘要: An electrohydraulic implement pressure cutoff system is disclosed that includes a pump, one or more hydraulic functions, at least one valve, sensors and control unit. The pump powers the functions, and the valves control flow between the pump and their associated function. The sensor readings indicate system parameters. The control unit receives the readings and controls the valves. When the readings indicate a function is at or beyond a threshold, the control unit closes the associated valve to prevent flow to or from that function. The sensors can be pressure, position or other types of sensors. Operator control signals can be provided to control the functions. When the readings indicate a function is at or beyond a threshold in a stalled direction and the operator signals keep commanding the function in the stalled direction, the control unit can close the associated valve regardless of the operator signals.
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7.
公开(公告)号:US11634885B2
公开(公告)日:2023-04-25
申请号:US16864749
申请日:2020-05-01
申请人: Deere & Company
发明人: Todd F. Velde , Alex R. Vandegrift , Craig Christofferson , Christopher J. Meyer , Aaron R. Kenkel , Mark D. Anderson , Lance R. Sherlock , Kenneth Franck
摘要: In embodiments, a work vehicle magnetorheological fluid (MRF) joystick system includes a joystick device, an MRF joystick resistance mechanism, and a controller architecture. The joystick device includes, in turn, a base housing, a joystick movably mounted to the base housing, and a joystick position sensor configured to monitor movement of the joystick relative to the base housing. The MRF joystick resistance mechanism is controllable to vary a first joystick stiffness resisting movement of the joystick relative to the base housing in at least one degree of freedom. The controller architecture is configured to: (i) detect when unintended joystick motion conditions occur during operation of the work vehicle; and (ii) when detecting unintended joystick motion conditions, command the MRF joystick resistance mechanism to increase the first joystick stiffness in a manner reducing susceptibility of the joystick device to unintended joystick motions.
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公开(公告)号:US20210222400A1
公开(公告)日:2021-07-22
申请号:US17222288
申请日:2021-04-05
申请人: Deere & Company
发明人: David Myers , Michael R. Gratton , Michael G. Kean , Todd F. Velde , Dustin T. Staade , Matthew Sbai , Ryan Detweiler , Grant R. Henn , Mary B. Wigginton , Aaron R. Kenkel
IPC分类号: E02F9/20 , B60T8/32 , G07C5/08 , E02F9/24 , G07C5/02 , B60T8/18 , B60T8/171 , B60T7/22 , B60Q5/00 , E02F3/28 , E02F9/26 , B60Q9/00 , B60Q1/02 , B60T8/58
摘要: Vehicles and methods of operating vehicles are disclosed herein. A vehicle includes a main frame, a work implement, and a control system. The work implement is supported by the main frame and configured to carry a payload in use of the vehicle. The control system is supported by the main frame and configured to control operation of the vehicle. The control system includes a payload measurement system configured to provide payload input indicative of a variable payload carried by the work implement in use of the vehicle and a controller coupled to the payload measurement system.
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公开(公告)号:US20210131063A1
公开(公告)日:2021-05-06
申请号:US16670262
申请日:2019-10-31
申请人: DEERE & COMPANY
发明人: Aaron R. Kenkel , Michael G. Kean , Mary B. Wigginton , Michael R. Gratton , Grant R. Henn , Todd F. Velde , Joseph R. Keene , Kevin W. Campbell , Dustin T. Staade
摘要: A load sensitive ride system and method is disclosed for a vehicle with an implement movably attached by a boom cylinder. The system includes a payload weight measuring system that measures payload weight and generates a signal indicative of the payload weight, a ride control circuit that adjusts hydraulic flow to and from the boom cylinder; and a controller that receives the signal indicative of the payload weight, and sends compliance commands to adjust ride control compliance based on the signal indicative of the payload weight. The system can include a tire inflation system that adjusts tire pressure. The controller can send inflation commands to adjust tire pressure based on the signal indicative of the payload weight. The compliance commands can depend on the components and compliance adjustment methods of the ride control circuit.
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公开(公告)号:US20210025144A1
公开(公告)日:2021-01-28
申请号:US16523275
申请日:2019-07-26
申请人: Deere & Company
发明人: Doug M. Lehmann , Aaron R. Kenkel
摘要: A monitoring system for a work vehicle having a lift system to which an implement is attachable via a connection assembly includes a weight detection subsystem operable with the lift system and configured to transfer signals representative of a weight supported by the lift system. The monitoring system also includes a position detection subsystem operable with the connection assembly and configured to transfer signals representative of a state of the connection assembly. A controller is in operable communication with the weight detection subsystem and the position detection subsystem and is configured to receive signals from the weight detection subsystem and from the position detection subsystem, determine a condition of the connection assembly based on the signals received, and output a signal based at least in part on the determined condition.
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