Abstract: A propulsion control system provides different levels of jerk as a function of operator inputs and actual measured operational parameters in a machine. The system includes a power source, a continuously variable transmission (CVT) coupled to an output of the power source, a plurality of input/output devices, a plurality of sensors configured to generate signals indicative of operational parameters of the machine, and a controller communicatively coupled with the power source, the CVT, the input/output devices, and the sensors. The controller includes a database stored in a memory with a plurality of jerk values mapped to different operations of the machine selected from at least one of activation of a brake by an operator for an aggressive stop, a directional shift request from an operator to select one of forward, reverse, or neutral, and a set of operating conditions of the machine indicative of a blade load shedding mode.

Abstract: A propulsion control system provides different levels of jerk as a function of operator inputs and actual measured operational parameters in a machine. The system includes a power source, a continuously variable transmission (CVT) coupled to an output of the power source, a plurality of input/output devices, a plurality of sensors configured to generate signals indicative of operational parameters of the machine, and a controller communicatively coupled with the power source, the CVT, the input/output devices, and the sensors. The controller includes a database stored in a memory with a plurality of jerk values mapped to different operations of the machine selected from at least one of activation of a brake by an operator for an aggressive stop, a directional shift request from an operator to select one of forward, reverse, or neutral, and a set of operating conditions of the machine indicative of a blade load shedding mode.

Abstract: A steering control system is disclosed for use with a machine. The steering control system may have left and right motors, at least one input device configured to generate first and second signals indicative of desired speed and desired steering, a left speed sensor configured to generate a third signal, and a right speed sensor configured to generate a fourth signal. The steering control system may further have a controller configured to determine a difference between desired and actual steering based on the second, third, and fourth signals, to determine a steering command change that should be implemented based on the difference, and to determine a gain based on the second signal. The controller may also be configured to adjust the steering command change as a function of the gain, and to selectively apply the adjusted steering command change to one of the left and right motors.

Abstract: A steering control system is disclosed for use with a machine. The steering control system may have left and right motors, at least one input device configured to generate first and second signals indicative of desired speed and desired steering, a left speed sensor configured to generate a third signal, and a right speed sensor configured to generate a fourth signal. The steering control system may further have a controller configured to determine a difference between desired and actual steering based on the second, third, and fourth signals, to determine a steering command change that should be implemented based on the difference, and to determine a gain based on the second signal. The controller may also be configured to adjust the steering command change as a function of the gain, and to selectively apply the adjusted steering command change to one of the left and right motors.

Abstract: A method is provided of boosting power to a continuously variable transmission having a motor. The continuously variable transmission is powered by an engine. The method includes selectively adjusting a power output of the engine above a steady state power output rating of the engine when an acceleration of the motor exceeds an acceleration threshold value.

Abstract: A method is provided of boosting power to a continuously variable transmission having a motor. The continuously variable transmission is powered by an engine. The method includes selectively adjusting a power output of the engine above a steady state power output rating of the engine when an acceleration of the motor exceeds an acceleration threshold value.

Abstract: A method of controlling a continuously variable transmission includes sensing an output speed of a motor, determining an upper speed limit based on the output speed of the motor and a positive torque limit associated with the motor, determining a limited motor speed command based on the lesser of a motor speed command and the upper speed limit, and controlling the motor based on the limited motor speed command.

Abstract: A method of controlling a continuously variable transmission includes sensing an output speed of a motor, determining an upper speed limit based on the output speed of the motor and a positive torque limit associated with the motor, determining a limited motor speed command based on the lesser of a motor speed command and the upper speed limit, and controlling the motor based on the limited motor speed command.