The present disclosure is directed to a control system for a machine having first and second traction devices and a cabin. The control system has a first actuator driving the first traction device and a first interface device to generate a first input indicating a desired movement of the first actuator. The control system also has a second actuator driving the second traction device and a second interface device to generate a second input indicating a desired movement of the second actuator. The control system has a controller that causes the first actuator to operate according to the first input and the second actuator to operate according to the second input when the cabin faces a first direction. The controller also causes the first actuator to operate according to the second input and the second actuator to operate according to the first input when the cabin faces a second direction.

Terrain-based machines are provided comprising a translational chassis movement indicator, a terrain-based implement, an implement inclinometer, and an implement state estimator. The translational chassis movement indicator provides a measurement indicative of movement of the machine chassis in one or more translational degrees of freedom. The implement inclinometer comprises (i) an implement accelerometer, which provides a measurement indicative of acceleration of the terrain-based implement in one or more translational or rotational degrees of freedom and (ii) an implement angular rate sensor, which provides a measurement of a rate at which the terrain-based implement is rotating in one or more degrees of rotational freedom. The implement state estimator generates an implement state estimate that is based at least partially on (i) implement position signals from an implement angular rate sensor and an implement accelerometer, and (ii) signals from the translational chassis movement indicator and the implement inclinometer.

A method includes operating a wheeled vehicle including an articulated suspension system; and articulating the suspension system to skid steer the vehicle. A wheeled vehicle having an articulated suspension system includes a skid steering controller capable of articulating the suspension system to skid steer the vehicle. The skid steering controller may be implemented in software and may, but does not necessarily, include three stages for applying a differential torque, varying the traction of at least one wheel, and finely adjusting the wheel's suspension to approach a critical damped response of the vehicle turning rate with respect to its commanded rate, respectively.

A road milling machine includes a rear wheel or track mounted on a pivot arm such that the wheel or track is movable between a first outer end position projecting laterally relative to the machine frame, and a second inner end position which permits milling close to an edge. A travel drive of the rear wheel or track provides a driving force to move the wheel or track between the end positions.

A guidance system for a machine includes one or more guide assemblies. Each guide assembly includes a support member, a lever, an abutment device, a sensor, and a controller. The support member is fixedly coupled to a frame of the machine. The lever is angularly biased away with respect to the support member. The abutment device is coupled to the lever is configured to be abutted and guided on a structure extending along a direction in which the machine moves to modify a roadway surface. The sensor detects a measured angle between the lever and the support member when the abutment device is abutted against the structure. The controller controls an actuation of a steering actuator associated with one or more traction devices of the machine to turn the traction devices based on the measured angle to modify the roadway surface along an extent of the structure.

A vehicle steering assembly for controlling movement of a vehicle having independently rotatable left and right ground-engaging traction elements. The steering assembly comprises a steering handle and a steering controller positioned generally below the steering handle and actuated by movement of the steering handle. The steering handle includes an upright shaft and a laterally-extending crossmember fixed to the top of the upright shaft. A flexible protective cover is attached to the shaft and is configured to prevent dirt and debris from entering the steering controller. The steering handle is shiftable in forward and rearward directions to thereby cause corresponding forward and rearward rotation of both of the left and right traction elements. The steering handle is rotatable in clockwise and counterclockwise directions to thereby cause a change in the relative speeds and directions of rotation of the left and right traction elements.

A controller provided in a bulldozer maintains the engagement of an inside steering clutch over a predetermined period beginning from a switching start point at which switching starts, when switching from a slow turn mode to a pivot turn mode, and when switching from the pivot turn mode to the slow turn mode, maintains the braking of an inside steering brake over a predetermined period beginning from a switching start point at which the switching starts.