System and method for detecting lash in a transmission and controlling an engine and/or a motor based on lash detections
First Claim
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1. A control system for a transmission of a vehicle, comprising:
- a first angular rotation module that determines a first angle through which a first shaft on an input side of the transmission rotates during a first predetermined period based on a first signal generated by a first shaft sensor;
a second angular rotation module that determines a second angle through which a second shaft on an output side of the transmission rotates during the first predetermined period based on a second signal generated by a second shaft sensor;
a lash module that selectively detects lash between gears of the transmission based on the first angle and the second angle; and
an engine control module that adjusts a desired transmission input torque based on whether lash is detected.
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Abstract
A control system for a transmission of a vehicle includes a first angular rotation module, a second angular rotation module, and a lash module. The first angular rotation module determines a first angular rotation of a first shaft during a first predetermined period based on a first signal generated by a first shaft sensor. The second angular rotation module determines a second angular rotation of a second shaft during the first predetermined period based on a second signal generated by a second shaft sensor. The lash module selectively detects lash between gears of the transmission based on the first angular rotation and the second angular rotation.
44 Citations
22 Claims
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1. A control system for a transmission of a vehicle, comprising:
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a first angular rotation module that determines a first angle through which a first shaft on an input side of the transmission rotates during a first predetermined period based on a first signal generated by a first shaft sensor; a second angular rotation module that determines a second angle through which a second shaft on an output side of the transmission rotates during the first predetermined period based on a second signal generated by a second shaft sensor; a lash module that selectively detects lash between gears of the transmission based on the first angle and the second angle; and
an engine control module that adjusts a desired transmission input torque based on whether lash is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for controlling a transmission of a vehicle, comprising:
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determining a first angle through which a first shaft on an input side of the transmission rotates during a first predetermined period based on a first signal generated by a first shaft sensor; determining a second angle through which a second shaft on an output side of the transmission rotates during the first predetermined period based on a second signal generated by a second shaft sensor; selectively detecting lash between gears of the transmission based on the first angle and the second angle; and
adjusting a desired transmission input torque based on whether lash is detected. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification