This difference may be attributed to the high torque values at the
driving wheels for this work gear in relation to the tractor's mass, which considerably reduces the dynamic traction coefficient, i.e., the traction force to the adherent mass ratio.
The two wheel balance application allows MEBot to balance on its two
driving wheels similar to a Segway [24].
Kinematic mismatch coefficient is the term used to describe the ratio between theoretical speeds of different axles'
driving wheels (Szente 2005; Vantsevich 2007; Zebrowski 2010):
In this case, the motor turns the
driving wheels through transmission with the torque moment [M.sub.rd] and creates the driving force [F.sub.rd].
In case of two-axle vehicles the drive can be realized as a 4x2 or 4x4 solution, whereas the first figure indicates the total number of the wheels and the second one the number of
driving wheels. For the 4x2 drive the live axle can be place in the front or at the back, and for the 4x4 drive both axles have
driving wheels.
With that it is no longer necessary to have big
driving wheels. He could have fitted eight into the space occupied by the six big ones.
The defective joint could make it impossible for a driver to control the
driving wheels if a bolt on the joint falls off.
The great slippage of
driving wheels is a frequent obstacle to fast acceleration.
The minirobot presented in figure 1 uses three geared DC motors, one for each
driving wheel. This type of minirobots can inspect pipes with diameters between 130 and 200 mm (Tatar et al., 2007).
The downward pull of the plows therefore materially increases the pressure between the
driving wheels and the ground, and greatly increases their grip on the ground.
that rode on spiked
driving wheels and was promoted as a 'walking tractor' because it mimicked the walking action of the horse when the long spikes (or grousers) on the front (or drive wheels) of this machine, struck the soil and lifted and moved the tractor."