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US 2004/0176894 A1Published application
Valve command signal processing system
AssigneeDeere & Company, a Delaware corporation
InventorsWilliam Guy Alexader, David James Boege
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AssigneeDeere & Company, a Delaware corporation
InventorsWilliam Guy Alexader, David James Boege
Estimating the term…
A hydraulic function can be extended and retracted under the control of an electrohydraulic valve unit. An operator movable command lever is movable into extend, center and retract region. A sensor generates a lever position signal. An electronic lever command unit receives the lever position signal and generates a valve command signal. An electronic valve control unit is remote from and communicated with the lever command unit. The electronic valve control unit controls communication of hydraulic fluid to the hydraulic function in response to the valve command signal. A method of generating the valve command signal includes generating a command signal which is proportional to the lever position signal when the lever is moved relatively slowly, and generating a command signal which is based on a maximum excursion of the lever into the extend and retract regions when the lever is moved relatively rapidly. Command signals are transmitted to the valve control unit after a delay time period which is a fraction of a period of the lever movement oscillation.
In a system having a hydraulic function which can be extended and retracted under the control of an electrohydraulic valve unit, an operator movable command lever movable into extend, center and retract regions, a sensor generating a lever position signal, an electronic lever command unit receiving the lever position signal and generating a valve command signal, an electronic valve control unit (VCU) remote from and communicated with the lever command unit, the VCU supplying hydraulic fluid to the hydraulic function in response to the valve command signal, a method of generating the valve command signal comprising:
In a system having a hydraulic function which can be extended and retracted under the control of an electrohydraulic valve unit, an operator movable command lever movable into extend, center and retract regions, a sensor generating a lever position signal, an electronic lever command unit receiving the lever position signal and generating a valve command signal, an electronic valve control unit (VCU) remote from and communicated with the lever command unit, the VCU supplying hydraulic fluid to the hydraulic function in response to the valve command signal, a method of generating the valve command signal comprising:
In a system having a hydraulic function which can be extended and retracted under the control of an electrohydraulic valve unit, an operator movable command lever movable into extend, center and retract regions, a sensor generating a lever position signal, an electronic lever command unit receiving the lever position signal and generating a valve command signal, an electronic valve control unit remote from and communicated with the lever command unit, the electronic valve control unit controlling communication of hydraulic fluid to the hydraulic function in response to the valve command signal, a method of generating the valve command signal comprising:
In a system having a hydraulic function which can be extended and retracted under the control of an electrohydraulic valve unit, an operator movable command lever movable into extend, center and retract regions, a sensor generating a lever position signal, an electronic lever command unit receiving the lever position signal and generating a valve command signal, an electronic valve control unit remote from and communicated with the lever command unit, the electronic valve control unit controlling communication of hydraulic fluid to the hydraulic function in response to the valve command signal, a method of generating the valve command signal comprising:
Dependencies are inferred from the claim text.