Method for calibrating a pivot angle sensor, control means, and propulsion or working machine
AssigneeRobert Bosch GmbH
InventorsXiming Wang, Marcel Golde, Michael Brand, Salih Tetik, Daniel Geiger, Benedikt Schrodi
Life of this patent
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Abstract
A method is for calibrating a pivot angle sensor of a hydraulic machine of a propulsion or working machine. A control device is configured to operationally control the hydraulic machine. The control device is also configured to process a sensor signal from the pivot angle sensor. The pivot angle sensor is calibrated, preferably in an automated manner, via the control device.
Claims13
A method for calibrating a pivot angle sensor of a hydraulic machine of a propulsion or working machine, comprising:
- controlling the hydraulic machine with a control device to adjust a pivot angle of the hydraulic machine to a maximum pivot angle;
- processing a sensor signal of the pivot angle sensor with the control device when the pivot angle of the hydraulic machine is at the maximum pivot angle;
- calibrating the pivot angle sensor with the control device based on the processed sensor signal;
- and
- operating the hydraulic machine to control a delivery flow of a fluid from the hydraulic machine and/or a delivery volume of the fluid from the hydraulic machine using the calibrated pivot angle sensor.
A method for calibrating a pivot angle sensor of a hydraulic machine of a propulsion or working machine, comprising:
- controlling the hydraulic machine with a control device to adjust a pivot angle of the hydraulic machine;
- processing a pivot-angle-dependent sensor signal of the pivot angle sensor with the control device, the pivot-angle-dependent sensor signal including a sensor value;
- calibrating the pivot angle sensor with the control device by (i) controlling a state of the hydraulic machine with the control device, the state of the hydraulic machine defined by a design-related pressure or a design-related pressure-medium volume flow of the hydraulic machine, (ii) receiving the pivot-angle-dependent sensor signal and detecting a corresponding sensor value, and (iii) assigning the detected corresponding sensor value to a minimum pivot angle of the hydraulic machine with the control device;
- and
- operating the hydraulic machine to control a delivery flow of a fluid from the hydraulic machine and/or a delivery volume of the fluid from the hydraulic machine using the calibrated pivot angle sensor,
- wherein the design-related pressure or the design-related pressure-medium volume flow characterizes an internal leakage of the hydraulic machine.
A control device for a hydraulic machine of a propulsion or working machine, comprising:
- a pivot angle sensor for the hydraulic machine,
- wherein the hydraulic machine is controlled with the control device to adjust a pivot angle of the hydraulic machine to a maximum pivot angle, and a sensor signal of the pivot angle sensor is processed by the control device when the pivot angle of the hydraulic machine is at the maximum pivot angle,
- wherein the control device is configured to calibrate the pivot angle sensor based on the processed sensor signal, and
- wherein the control device is further configured to operate the hydraulic machine to control a delivery flow of a fluid from the hydraulic machine and/or a delivery volume of the fluid from the hydraulic machine using the calibrated pivot angle sensor.
Dependencies are inferred from the claim text.