Abstract: A method of operating machine system includes receiving expected material placement data for a paving machine and comparing the expected material placement data with actual material placement data. The method further includes outputting a signal based on the comparison, and commanding replenishing material from a supply machine to the second supply volume responsive to the signal. A paving control system for a paving system includes a computer readable memory configured to store expected material placement data, a receiver configured to receive actual material placement data and a data processor configured to output a control signal to a supply machine to controllably replenish material to an external material supply volume for the paving system in a manner responsive to comparing the expected material placement data with the actual material replacement data.

Abstract: A method of operating a paving system includes establishing a plan for paving a work area which is based on a positional temperature model. The method further includes receiving temperature data for paving material and comparing the temperature data with data predicted by the positional temperature model. Operation of the paving system is adjusted where actual data differs from model predicted data. A paving system and control system are provided having an electronic control unit configured to compare electronic temperature data with a positional temperature model for paving material. The electronic control unit can control machines of the paving system based on comparing actual data with model predicted data, and can further update either or both of a plan for paving a work area and the positional temperature model itself based on differences between actual data and model predicted data.

Abstract: A vehicle with a compound steering system has the ability to reorient both a forward and aft steering axis with respect to a chassis. The compound steering system is controlled in a manner in which one of a forward steering actuator and an aft steering actuator will reach its mechanical limit before the other, when a steering command from an operator input results in an oversteer condition. An oversteer feedback system provides an indication to the operator that the vehicle is in a oversteer condition, such as by increasing the rotational resistance level of the steering wheel to a medium level when in an oversteer condition.

Abstract: A method of operating machine system includes receiving expected material placement data for a paving machine and comparing the expected material placement data with actual material placement data. The method further includes outputting a signal based on the comparison, and commanding replenishing material from a supply machine to the second supply volume responsive to the signal. A paving control system for a paving system includes a computer readable memory configured to store expected material placement data, a receiver configured to receive actual material placement data and a data processor configured to output a control signal to a supply machine to controllably replenish material to an external material supply volume for the paving system in a manner responsive to comparing the expected material placement data with the actual material replacement data.

Abstract: A method of operating a paving system includes establishing a plan for paving a work area which is based on a positional temperature model. The method further includes receiving temperature data for paving material and comparing the temperature data with data predicted by the positional temperature model. Operation of the paving system is adjusted where actual data differs from model predicted data. A paving system and control system are provided having an electronic control unit configured to compare electronic temperature data with a positional temperature model for paving material. The electronic control unit can control machines of the paving system based on comparing actual data with model predicted data, and can further update either or both of a plan for paving a work area and the positional temperature model itself based on differences between actual data and model predicted data.

Abstract: Work machines such as road mills having a frame supported by tracked or wheeled ground engaging support units may require the ability to move one or more of the ground engaging units between projecting and retracted positions relative to the frame without reversing the running direction of the repositioned unit. A disclosed work machine has a machine frame supportable by a plurality of ground engaging units. A support device connected between the machine frame and at least one of the ground engaging units has a lifting column adapted to controllably raise and lower the ground engaging unit relative to the frame. A first actuator is connected to the support device to move the one ground engaging unit between the projecting and retracted positions, and a second actuator is connected to the lifting column to maintain the running direction of the associated ground engaging unit in each of the projecting and retracted positions.

Abstract: A controller for use in a vibratory mechanism includes an amplitude control circuit that generates an amplitude control signal that varies from a minimum value to a maximum value. The vibratory mechanism is adapted to vibrate at an amplitude based on an amplitude control signal characteristic. Additionally, the controller includes a frequency control circuit that is operatively coupled to the amplitude control-circuit to produce a frequency control signal that varies based on the amplitude control signal characteristic.

Abstract: A vibratory mechanism is provided for a compacting work machine. The vibratory mechanism includes at least one eccentric weight rotatably positioned within a housing. Pressurized fluid is introduced into the vibratory mechanism at an inlet passage. A means for moving fluid through the vibratory mechanism and lubricating a pair of bearings is provided that operates during rotation of the eccentric weight.

Abstract: A split drum is provided for a compacting work machine and includes a first and a second drum section. A differential arrangement is operatively positioned between the first and second drum sections. Rotational power is supplied to the first and second drum sections through the differential arrangement which is connected with a propel motor. The first and second drum sections are rotated simultaneously by grounding either the first or second drum section with the propel motor. Releasing the grounding allows the first drum section to counter rotate relative to the second drum section.

Abstract: A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the first and second eccentric weights during operation via the inner shaft and outer shaft respectively. A phase control device is operatively connected to the second planetary gear set to index the second eccentric weight relative to the first eccentric weight.

Abstract: A vibratory mechanism is provided for a compacting work machine. The vibratory mechanism includes at least one eccentric weight rotatably positioned within a housing. Pressurized fluid is introduced into the vibratory mechanism at an inlet passage. A means for moving fluid through the vibratory mechanism and lubricating a pair of bearings is provided that operates during rotation of the eccentric weight.

Abstract: A split drum is provided for a compacting work machine and includes a first and a second drum section. A differential arrangement is operatively positioned between the first and second drum sections. Rotational power is supplied to the first and second drum sections through the differential arrangement which is connected with a propel motor. The first and second drum sections are rotated simultaneously by grounding either the first or second drum section with the propel motor. Releasing the grounding allows the first drum section to counter rotate relative to the second drum section.

Abstract: A system for variably powering and vibrating a compaction roller on a compacting machine for use in compacting surfaces. The system includes a chassis and at least one compaction roller rotatably journaled to the chassis. The compaction roller forms the rotor of a variable reluctance motor for driving the roller in a rotational manner and for vibrating the roller.

Abstract: A controller for use in a vibratory mechanism includes an amplitude control circuit that generates an amplitude control signal that varies from a minimum value to a maximum value. The vibratory mechanism is adapted to vibrate at an amplitude based on an amplitude control signal characteristic. Additionally, the controller includes a frequency control circuit that is operatively coupled to the amplitude control-circuit to produce a frequency control signal that varies based on the amplitude control signal characteristic.

Abstract: A vibratory mechanism is provided with first and second motors connected to first and second eccentric weights. One of the first and second motors is operable to change a phase difference between the first and second eccentric weights to change a vibration amplitude.

Abstract: A system is provided for variably powering and vibrating a compaction roller on a compacting machine for use in compacting surfaces. The system includes a chassis and at least one compaction roller rotatably journaled to the chassis. The compaction roller forms the rotor of a variable reluctance motor for driving the roller in a rotational manner and for vibrating the roller.

Abstract: A compacting drum for a work machine has first and second drum sections. The first and second coaxial drum sections rotate independently from one another. The first and second drum sections are coupled together by a controllable coupling arrangement that can be varied between fully coupled and fully uncoupled.

Abstract: A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the first and second eccentric weights during operation via the inner shaft and outer shaft respectively. A phase control device is operatively connected to the second planetary gear set to index the second eccentric weight relative to the first eccentric weight.

Abstract: A vibratory mechanism includes a motor, and a clutch having first and second output shafts. The first and second output shafts are connected with first and second eccentric weights. The clutch is operative to engage and disengage the inner and outer drive shafts from each other to change a phase difference between the first and second eccentric weights.

Abstract: A vibratory mechanism is provided with first and second motors connected to first and second eccentric weights. A one of the first and second motors is operable to change a phase difference between the first and second eccentric weights to change a vibration amplitude.