Systems and method of determining PTO transmission gear ratio
First Claim
1. A method, comprising:
- receiving a first shaft speed;
measuring a parameter indicative of a power take-off (PTO) shaft speed;
determining a PTO shaft acceleration by monitoring the parameter indicative of the PTO shaft speed over time;
determining, via a plurality of estimators, a plurality of normalized PTO clutch gear ratios, wherein each of the plurality of estimators determines one of the plurality of normalized PTO clutch gear ratios based, at least in part, on the first shaft speed, the PTO shaft speed, and one of a plurality of known PTO transmission gear ratio options; and
selecting one of the plurality of estimators, when the PTO shaft acceleration drops below a threshold value, wherein the selected estimator is the normalized PTO clutch gear ratio that is closest to 1,controlling a PTO clutch based, at least in part, on the known PTO transmission gear ratio associated with the selected estimator of the plurality of estimators.
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Accused Products
Abstract
A method includes receiving a first shaft speed, measuring a parameter indicative of a PTO shaft speed, determining a PTO shaft acceleration by monitoring the parameter indicative of the PTO shaft speed over time, determining, via a plurality of estimators, a plurality of normalized PTO clutch gear ratios, wherein each of the plurality of estimators determines one of the plurality of normalized PTO clutch gear ratios based, at least in part, on the first shaft speed, the PTO shaft speed, and one of a plurality of known PTO transmission gear ratio options, and selecting one of the plurality of estimators, when the PTO shaft acceleration drops below a threshold value, wherein the normalized PTO clutch gear ratio determined by the selected estimator is about 1.
21 Citations
18 Claims
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1. A method, comprising:
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receiving a first shaft speed; measuring a parameter indicative of a power take-off (PTO) shaft speed; determining a PTO shaft acceleration by monitoring the parameter indicative of the PTO shaft speed over time; determining, via a plurality of estimators, a plurality of normalized PTO clutch gear ratios, wherein each of the plurality of estimators determines one of the plurality of normalized PTO clutch gear ratios based, at least in part, on the first shaft speed, the PTO shaft speed, and one of a plurality of known PTO transmission gear ratio options; and selecting one of the plurality of estimators, when the PTO shaft acceleration drops below a threshold value, wherein the selected estimator is the normalized PTO clutch gear ratio that is closest to 1, controlling a PTO clutch based, at least in part, on the known PTO transmission gear ratio associated with the selected estimator of the plurality of estimators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a sensor configured to sense a parameter indicative of a power take-off (PTO) shaft speed; a controller comprising; communication circuitry configured to receive a first shaft speed; a processor configured to determine a PTO shaft acceleration by monitoring the parameter indicative of the PTO shaft speed over time; and a plurality of estimators, wherein each of the plurality of estimators is assigned one of a plurality of known PTO transmission gear ratio options, and wherein each estimator is configured to determine a normalized PTO clutch gear ratio based, at least in part, on the first shaft speed, the PTO shaft speed, and the PTO transmission gear ratio assigned to the estimator; wherein the controller is configured to select the estimator of the plurality of estimators outputting the normalized PTO clutch gear ratio closest to 1 when the PTO shaft acceleration drops below a threshold value, wherein the controller is configured to control a PTO clutch based, at least in part, on the known PTO transmission gear ratio assigned to the selected estimator of the plurality of estimators. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A non-transitory computer readable medium comprising executable instructions that when executed cause a processor to:
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determine a PTO shaft acceleration by monitoring a received parameter indicative of a power take-off (PTO) shaft speed over time; determine a plurality of normalized PTO clutch gear ratios, wherein each of the plurality of normalized PTO clutch gear ratios is determined based, at least in part, on a drive shaft speed, the PTO shaft speed, and one of a plurality of known PTO transmission gear ratio options; select one of the plurality of normalized PTO clutch gear ratios, when the PTO shaft acceleration drops below a threshold value, wherein the normalized PTO clutch gear ratio that is closest to 1 is selected; and control a PTO clutch based, at least in part, on the known PTO transmission gear ratio associated with the selected normalized PTO clutch gear ratio. - View Dependent Claims (17, 18)
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Specification