The interest in Narrow Tilting Vehicle (NTV) has increased recently as it offers the possibility to tackle both traffic congestion and carbon emissions.
With a small footprint, low weigth and narrow track, these vehicles are likely to increase the utilization of existing freeways and parking facilities while being energy efficient. Their large height-to-track ratio leads to a reduced stability and requires tilting towards the inside of a turn while cornering.
For the purpose of research about control of these vehicles, a reduced-scale three-wheeled tilting vehicle prototype has been built.
With the help of multibody simulations, this demonstrator allows to analyze dynamic performances and validate the conception.
Mechanical limits of the vehicle steer and tilt at the front suspension are estimated thanks to the modelisation and compared with experiments.
First, a strain gauge is put on the front binocular to provide a torque information associated with the actuated tilting degree of freedom of the vehicle.
This sensor was designed on the existing “T” shaped load struture of the vehicle.
Moreover, an other sensor has been built to measure the absolute value of the tilt angle of the frame of the demonstrator.
This position is thus measured directly on the tilting actuator, by means of a gear ratio, transmitting this motion to a potentiometer