Method of determining cycle time of an actuator and a system for determining a cycle time of a machine having an actuator

Patent metadata

Field	Value
Publication number	US-2019093683-A1
Application number	US-201815933478-A
Country	US
Kind code	A1
Filing date	Mar 23, 2018
Priority date	Feb 9, 2017
Publication date	Mar 28, 2019
Grant date	—

Abstract

In accordance with an example embodiment, a method includes monitoring a position of an actuator during operation of the actuator, determining that an actuator command value is greater than an actuator command value threshold, starting a timer upon a movement of the actuator through a starting position during the operation of the actuator at the actuator command value, determining satisfaction of at least one condition, and stopping the timer upon satisfaction of the at least one condition and movement of the actuator through an ending position.

First claim

What is claimed is:

1 . A method comprising:
monitoring a position of an actuator during operation of the actuator; determining that an actuator command value is greater than an actuator command value threshold; starting a timer upon a movement of the actuator through a starting position during the operation of the actuator at the actuator command value; determining satisfaction of at least one condition; and stopping the timer upon satisfaction of the at least one condition and movement of the actuator through an ending position.

2 . The method of claim 1 , wherein the actuator comprises one of a work tool actuator and a steering actuator.

3 . The method of claim 2 , further comprising:
determining that the at least one condition has not been satisfied; and cancelling the timer upon the determination that the at least one condition has not been satisfied.

4 . The method of claim 3 , wherein the at least one condition comprises the actuator command value being greater than the actuator command value threshold.

5 . The method of claim 3 , wherein the at least one condition comprises an operation of a second actuator.

6 . The method of claim 3 , wherein the at least one condition comprises a fluid pressure being greater than a threshold fluid pressure.

7 . The method of claim 2 , wherein the at least one condition comprises a machine engine speed being greater than a threshold engine speed.

8 . A method comprising:
operating one of a work tool and a steering mechanism of a machine through at least one threshold position; operating a timer based upon operation of the one of the work tool and the steering mechanism through the at least one threshold position and at least one first condition; and determining a cycle time of the one of the work tool and the steering mechanism based on the operation of the timer.

9 . The method of claim 8 , further comprising receiving a command value, wherein the first condition comprises the command value being greater than a threshold command value.

10 . The method of claim 8 , wherein the at least one threshold position comprises a first threshold position and a second threshold position, and operating the timer comprises starting the timer upon operation of the one of the work tool and the steering mechanism through the first threshold position and stopping the timer upon operation of the one of the work tool and the steering mechanism through the second threshold position.

11 . The method of claim 10 , further comprising cancelling the timer based at least partially on at least one second condition.

12 . The method of claim 11 , wherein the second condition comprises a command value being less than a threshold command value, an operation of a second actuator, a fluid pressure being greater than a threshold fluid pressure, and a machine engine speed being less than a threshold engine speed.

13 . A system for determining a cycle time of a machine having an actuator configured to operate at least between a first threshold position and a second threshold position, the system comprising:
a controller configured to
continuously monitor a position of an actuator during operation of the machine;
determine satisfaction of a first condition;
measure, upon monitoring the position of the actuator operating from the first threshold position to the second threshold position, a time for the actuator to operate from the first threshold position to the second threshold position; and
determine a cycle time of the actuator based upon the actuator operating from the first threshold position to the second threshold position.

14 . The system of claim 13 , wherein the controller is further configured to
receive an actuator command value; and command actuation of the actuator based upon the actuator command value.

15 . The system of claim 14 , wherein the first condition comprises the actuator command value being greater than a threshold actuator command value.

16 . The system of claim 13 , wherein the controller is further configured to determine the cycle time when at least one second condition is satisfied.

17 . The system of claim 16 , wherein the at least one second condition comprises the actuator command value being greater than a threshold command value.

18 . The system of claim 16 , wherein the at least one second condition comprises non-operation of a second actuator.

19 . The system of claim 16 , wherein the at least one second condition comprises a fluid pressure being less than a threshold fluid pressure.

20 . The system of claim 16 , wherein the at least one second condition comprises a machine engine speed being greater than a threshold engine speed.

Assignees

• Deere & Co

Inventors

• Kenkel Aaron R
• Myers David J
• Lehmann Doug M
• Stahle Scott R

Classifications

• E02F9/2203

  Arrangements for controlling the attitude of actuators, e.g. speed, floating function · CPC title

• F15B2211/6306

  representing a pressure · CPC title

• E02F3/43

  Control of dipper or bucket position; Control of sequence of drive operations · CPC title

• E02F9/264

  Sensors and their calibration for indicating the position of the work tool · CPC title

• F15B15/2815 Primary

  Position sensing, i.e. means for continuous measurement of position, e.g. LVDT · CPC title