A work machine may include an electric motor, an idler wheel, a drivable track engaged with the idler wheel, and an actuator that is electrically powered by the electric motor and configured to move the idler wheel to adjust the tension in the drivable track based on the torque output of the electri
A work machine may include an electric motor, an idler wheel, a drivable track engaged with the idler wheel, and an actuator that is electrically powered by the electric motor and configured to move the idler wheel to adjust the tension in the drivable track based on the torque output of the electric motor. The work machine also includes a controller configured to automatically control the electrical current input to the electric motor based on one or more monitored control factors associated with the work machine.
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1. A work machine comprising: a drive assembly including: an electric motor;an idler wheel;a drivable track engaged with the idler wheel; anda linear actuator driven by the electric motor, coupled to the idler wheel, and movable through a range of positions, wherein each position of the linear actua
1. A work machine comprising: a drive assembly including: an electric motor;an idler wheel;a drivable track engaged with the idler wheel; anda linear actuator driven by the electric motor, coupled to the idler wheel, and movable through a range of positions, wherein each position of the linear actuator is associated with a different tension of the drivable track; anda controller configured to determine a torque output of the electric motor and configured to determine the actual tension of the drivable track based on the torque output of the electric motor. 2. The work machine of claim 1, wherein the drivable track is an elastomeric material. 3. The work machine of claim 1, further comprising an engine mechanically coupled to the drivable track and configured to drive rotation of the drivable track; wherein the controller is configured to send signals to the electric motor to move the linear actuator based on a torque output of the engine. 4. The work machine of claim 1, wherein the controller is configured to send signals to the electric motor to move the linear actuator based on a speed of travel of the work machine. 5. The work machine of claim 4, wherein the controller is configured to send signals to the electric motor to move the linear actuator based on a rate of change of the speed of travel of the work machine. 6. The work machine of claim 1, wherein the controller is configured to send signals to the electric motor to extend or fix the position of the linear actuator when a rate of reduction in speed exceeds a threshold rate of reduction in speed of the work machine. 7. The work machine of claim 1, further comprising a brake pedal movable through a range of positions including a fully raised position and a fully depressed position; and wherein the controller is configured to send a signal to the electric motor to move the linear actuator based on a position of the brake pedal. 8. The work machine of claim 7, wherein the controller is configured to monitor a rate of position change of the brake pedal; and wherein the controller commands the electric motor to move the linear actuator if the rate of position change of the brake pedal exceeds a threshold rate of position change. 9. The work machine of claim 1, wherein the controller is configured to send signals to the electric motor to move the linear actuator based on a change in a direction of travel of the work machine. 10. The work machine of claim 1, wherein the controller is configured to receive a signal associated with a target tension of the drivable track; and wherein the controller commands the electric motor to move the linear actuator if the actual tension is beyond a threshold difference from the target tension. 11. The work machine of claim 10, wherein the controller is configured to send signals to the electric motor to retract the linear actuator and subsequently extend the linear actuator to a position associated with the target tension. 12. The work machine of claim 11, wherein the controller is configured to retract the linear actuator and subsequently extend the linear actuator to a position associated with the target tension in response to a change in a direction of travel of the work machine. 13. A work machine comprising: an electric motor configured to receive electrical current and output mechanical power through rotation of an output shaft;an idler wheel;an elastomeric drivable track engaged with the idler wheel;an engine configured to drive rotation of the drivable track;a compressible brake pedal configured to cease or slow rotation of the elastomeric drivable track when compressed; anda linear actuator powered by the electric motor, coupled to the idler wheel, and movable through a range of positions, wherein each position of the linear actuator is associated with a different tension of the elastomeric drivable track; anda controller configured to automatically control: (a) the electrical current input to the electric motor and (b) the direction of rotation of the output shaft, to cause movement of the linear actuator corresponding to the electrical current input to the electric motor and the direction of rotation of the output shaft to adjust an actual tension of the elastomeric drivable track, based on one or more monitored control factors associated with the work machine. 14. The work machine of claim 13, wherein the monitored control factors include at least one of: a torque output of the engine,a rate of change of the torque output of the engine,a speed of the work machine,a rate of change of the speed of the work machine,a position of the compressible brake pedal,a rate of change of brake pedal position,a direction of travel of the work machine,a change in the direction of travel of the work machine, anda target tension of the elastomeric drivable track associated with an amount of electrical current to be input to the electrical motor. 15. The work machine of claim 14, wherein the controller is configured to compare the actual tension of the elastomeric drivable track to the target tension of the elastomeric drivable track; and wherein the controller is configured to automatically adjust at least one of: (a) the electrical current input to the electric motor and (b) the direction of rotation of an output shaft of the electric motor, if the actual tension is beyond a threshold difference from the target tension. 16. A method of operating a work machine having an elastomeric drivable track comprising: monitoring at least one control factor associated with the work machine including: a torque output of an engine of the work machine,a rate of change of the torque output of the engine,a speed of the work machine,a rate of change of the speed of the work machine,a position of a brake pedal of the work machine,a rate of change the position of the brake pedal,a change in a direction of travel of the work machine, anda target tension of the elastomeric drivable track; andadjusting an actual tension of the elastomeric drivable track based on the at least one monitored control factor associated with the work machine. 17. The method of claim 16, wherein adjusting an actual tension of the elastomeric drivable track includes: adjusting electrical signals input to an electric motor to move a linear actuator coupled to an idler wheel that is engaged with the elastomeric drivable track. 18. The method of claim 17, further comprising: determining the actual tension of the elastomeric drivable track based on the electrical power currently input to the electric motor;determining the target tension of the elastomeric drivable track; andcomparing the actual tension of the elastomeric drivable track to the target tension of the elastomeric drivable track;wherein adjusting electrical signals input to the electric motor includes reversing the direction of rotation of an output shaft of the electric motor. 19. The method of claim 16, wherein: (i) the elastomeric drivable track is one of a plurality of elastomeric drivable tracks of the work machine, (ii) the electric motor is one of a plurality of electric motors of the work machine; (iii) the linear actuator is one of a plurality of linear actuators of the work machine; (iv) the idler wheel is one of a plurality of idler wheels of the work machine, (v) each idler wheel of the plurality of idler wheels is engaged with a corresponding elastomeric drivable track of the plurality of elastomeric drivable tracks; and wherein the method further comprises: adjusting electrical signals input to at least one electric motor of the plurality of electric motors independently of electrical signals input to the remaining electric motors of the plurality of electric motors, based on the at least one monitored control factor associated with the work machine. 20. The method of claim 16, wherein: (i) the elastomeric drivable track is one of a plurality of elastomeric drivable tracks of the work machine, (ii) the electric motor is one of a plurality of electric motors of the work machine; (iii) the linear actuator is one of a plurality of linear actuators of the work machine; (iv) the idler wheel is one of a plurality of idler wheels of the work machine, (v) each idler wheel of the plurality of idler wheels is engaged with a corresponding elastomeric drivable track of the plurality of elastomeric drivable tracks; wherein the plurality of elastomeric drivable tracks includes a forward pair of elastomeric drivable tracks and a rear pair of elastomeric drivable tracks; andwherein the method further comprises: adjusting an actual tension one of the forward pair of elastomeric drivable tracks and the rearward pair of elastomeric drivable tracks independently of the other of the forward pair of elastomeric drivable tracks and the rearward pair of elastomeric drivable tracks, based on the at least one monitored control factor associated with the work machine.
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