Turf maintenance vehicle all-wheel drive system
First Claim
1. A turf maintenance vehicle, comprising:
- at least one front driven wheel propelling the turf maintenance vehicle;
a first motor receiving current and rotating the front driven wheel;
a traction control system in communication with the first motor;
at least one rear steerable wheel to steer the turf maintenance vehicle; and
a second motor rotatably connected to the at least one rear steerable wheel and energized by a current to rotate the at least one rear steerable wheel,wherein a steering angle of the at least one rear steerable wheel is determined based on an angle of wheel rotation of the at least one rear steerable wheel;
wherein i) the current to the first motor is temporarily decreased and ii) the current to the second motor is temporarily increased by the traction control system in response to a wheel slip condition of the front driven wheel and the steering angle of the at least one rear steerable wheel.
2 Assignments
0 Petitions
Accused Products
Abstract
A turf maintenance vehicle all-wheel drive traction control system includes a primary wheel propelling the vehicle. A first motor rotates the primary wheel. A traction control system has a first portion communicating with the first motor to monitor either a first motor current demand or a rotational speed of the primary wheel or the first motor and generates a traction control value. A secondary wheel rotated by a second motor steers the vehicle in a vehicle non-slip condition. A traction control system second portion determines a secondary wheel steering angle value. A speed threshold limit stored in the traction control system compared to the traction control value generates a slippage occurrence message indicative of a primary wheel traction loss event. A second motor drive signal created by comparing the steering angle value and the slippage occurrence message energizes the second motor during the traction loss event.
165 Citations
17 Claims
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1. A turf maintenance vehicle, comprising:
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at least one front driven wheel propelling the turf maintenance vehicle; a first motor receiving current and rotating the front driven wheel; a traction control system in communication with the first motor; at least one rear steerable wheel to steer the turf maintenance vehicle; and a second motor rotatably connected to the at least one rear steerable wheel and energized by a current to rotate the at least one rear steerable wheel, wherein a steering angle of the at least one rear steerable wheel is determined based on an angle of wheel rotation of the at least one rear steerable wheel; wherein i) the current to the first motor is temporarily decreased and ii) the current to the second motor is temporarily increased by the traction control system in response to a wheel slip condition of the front driven wheel and the steering angle of the at least one rear steerable wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A turf maintenance vehicle, comprising:
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at least one front driven wheel; a first motor rotating the front driven wheel, the first motor producing a first signal; a traction control system in communication with the first motor, the traction control system storing a speed threshold limit and a predetermined speed value; at least one rear steerable wheel steering the turf maintenance vehicle; and a second motor rotating the at least one rear steerable wheel, wherein a steering angle of the at least one rear steerable wheel is determined based on an angle of wheel rotation of the at least one rear steerable wheel; wherein a speed of the second motor is temporarily increased and a speed of the first motor is temporarily decreased by the traction control system, based on the steering angle of the at least one rear steerable wheel, when the speed threshold limit compared to the first signal exceeds the predetermined value indicating a wheel slip condition of the front driven wheel. - View Dependent Claims (15, 16, 17)
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Specification