Apparatus and method for controlling oil hydraulic pump for excavator
First Claim
1. An apparatus for controlling a hydraulic pump for an excavator, comprising:
- an operating unit generating an operation signal according to an operation of an operator, and including a joystick or a pedal;
an oil flow supplying unit supplying oil to a plurality of actuators, in order to drive the plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and
a control unit controlling the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the plurality of actuators with respect to a change of a predetermined operation mode according to the operation signal for the plurality of the actuators;
wherein at least one of the plurality of the actuators comprises a travelling device, andwherein when operation signals for the plurality of actuators are input, and an operation signal corresponding to the travelling device is input, the control unit first assigns two pumps to the travelling device for supplying oil to the travelling device.
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Accused Products
Abstract
An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
21 Citations
13 Claims
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1. An apparatus for controlling a hydraulic pump for an excavator, comprising:
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an operating unit generating an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit supplying oil to a plurality of actuators, in order to drive the plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit controlling the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the plurality of actuators with respect to a change of a predetermined operation mode according to the operation signal for the plurality of the actuators; wherein at least one of the plurality of the actuators comprises a travelling device, and wherein when operation signals for the plurality of actuators are input, and an operation signal corresponding to the travelling device is input, the control unit first assigns two pumps to the travelling device for supplying oil to the travelling device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling a hydraulic pump for an excavator with respect to a change of an operation mode according to an operation signal, the method comprising:
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checking whether an operation signal corresponding to a travelling device is input; determining that the operation signal corresponding to the travelling device is input; preferentially assigning two pumps to the travelling device; checking whether an operation signal corresponding to an auxiliary device is input; responsive to determining that the operation signal corresponding to the auxiliary device is input, assigning one pump to the auxiliary device; checking whether an operation signal corresponding to a swing is input; and responsive to determining that the operation signal corresponding to the swing is input, assigning one pump to the swing. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification