System and method for controlling hydraulic flow
AssigneeCaterpillar Inc.
InventorRobert J. Price
Life of this patent
Estimating the term…
Abstract
A method is provided for controlling hydraulic flow to a hydraulic actuator in fluid communication with a pump. The method includes generating a signal representative of a speed of the pump and selecting a relationship from a plurality of relationships between valve commands and an operator input. The selection is based upon the speed signal. A valve is modulated to control the hydraulic flow to the hydraulic actuator based on the selected relationship and the operator input.
Claims22
A method for controlling hydraulic flow to a hydraulic actuator in fluid communication with a pump, the method comprising:
- generating a signal representative of a speed of the pump;
- selecting a relationship from a plurality of relationships between valve commands and an operator input, the selection being based upon the speed signal;
- and
- modulating a valve to control the hydraulic flow to the hydraulic actuator based on the selected relationship and the operator input.
A system for controlling hydraulic flow to a hydraulic actuator in fluid communication with a pump, the system comprising:
- a sensor assembly for generating a signal representative of a speed of the pump;
- an operator input device for providing an operator input;
- a controller electrically coupled to the sensor assembly and the operator input device, the controller being configured to select a relationship from a plurality of relationships between valve commands and the operator input based on the speed signal.
A machine for moving a load, comprising:
- a pump;
- a hydraulic actuator in fluid communication with the pump;
- a valve in fluid communication with the pump and the hydraulic actuator;
- a sensor assembly for generating a signal representative of a speed of the pump;
- an operator input device for providing an operator input;
- and
- a controller electrically coupled to the sensor assembly and the operator input device, the controller being configured to select a relationship from a plurality of relationships between valve commands and the operator input based on the speed signal.
Dependencies are inferred from the claim text.