Runkoohjauksessa

Runkoohjauksessa is a Finnish term describing a steering concept in which steering input is applied to the vehicle’s frame or chassis rather than directly to the wheels. In frame steering, the frame itself can pivot or rotate about a steering connection while the wheel axles may remain fixed or have limited steering. Actuators, hydraulics, or electric drives control the frame’s orientation, and wheel alignment supports load distribution and traction.

The operating principle differs from conventional wheel steering. By directing the steering action to the frame, the overall steering geometry changes, which can alter the path followed by the wheels. This requires specialized control logic and sensor feedback to coordinate frame motion with wheel contact to the ground. The resulting dynamics influence steering effort, tire loading, and slip characteristics, often demanding tailored calibration for specific vehicle configurations.

Applications of runkoohjauksessa are found in certain types of heavy machinery, construction equipment, and off-road or specialty vehicles where frame motion can improve maneuverability or stabilize load handling. It is also studied in robotics and autonomous platforms where chassis-based steering offers advantages for complex terrains or constrained spaces.

Advantages may include tighter turning capabilities, improved load control, and reduced wear in some architectures. Disadvantages include increased mechanical and control complexity, higher maintenance needs, and potential trade-offs in stability at higher speeds. Related concepts include traditional wheel steering, bogie steering, and articulated steering.