Drive system having slip control
First Claim
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1. A drive system for a machine, the drive system comprising:
- at least one driven traction device;
a transmission operatively connected to the at least one driven traction device and configured to drive the at least one driven traction device; and
a controller configured to determine, before the at least one driven traction device is allowed to slip, a ground tractive capacity associated with the at least one driven traction device and to limit an amount of torque transmitted from the transmission to the at least one driven traction device when the amount of torque to be transmitted would exceed the ground tractive capacity absent any intervention, the controller being further configured to determine the ground tractive capacity as a function of a stored value that is indicative of a coefficient of friction between the at least one driven traction device and a ground surface.
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Abstract
A drive system for a work machine is disclosed. The drive system has at least one driven traction device and a transmission operatively connected to the at least one driven traction device. The transmission is configured to drive the at least one driven traction device. The drive system further has a controller configured to determine a ground tractive capacity associated with the at least one driven traction device and to limit an amount of torque transmitted from the transmission to the at least one driven traction device when the amount of torque to be transmitted will exceed the ground tractive capacity.
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Citations
33 Claims
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1. A drive system for a machine, the drive system comprising:
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at least one driven traction device; a transmission operatively connected to the at least one driven traction device and configured to drive the at least one driven traction device; and a controller configured to determine, before the at least one driven traction device is allowed to slip, a ground tractive capacity associated with the at least one driven traction device and to limit an amount of torque transmitted from the transmission to the at least one driven traction device when the amount of torque to be transmitted would exceed the ground tractive capacity absent any intervention, the controller being further configured to determine the ground tractive capacity as a function of a stored value that is indicative of a coefficient of friction between the at least one driven traction device and a ground surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of operating a drive system of a machine having at least one driven traction device, the method including:
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determining a ground tractive capacity associated with the at least one driven traction device, including referencing a value indicative of a coefficient of friction between the at least one driven traction device and a ground surface; and limiting, prior to any slip occurrence, an amount of torque transferred to the at least one driven traction device when the amount of torque to be transmitted will exceed the determined ground tractive capacity. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A machine, comprising:
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a power source configured to produce a power output; a plurality of driven traction devices; a transmission operably connected to the power source and configured to drive the plurality of driven traction devices; and a controller configured to individually determine a ground tractive capacity associated with each of the plurality of driven traction devices and to individually limit an amount of torque transmitted from the transmission to one or more of the plurality of driven traction devices when the amount of torque to be transmitted to one or more of the plurality of driven traction devices would exceed, absent any torque limiting, the current ground tractive capacity of the one or more of the plurality of driven traction devices. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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Specification