“…To design mechanised graders is a hot topic as illustrated by the numerous papers presented these last years like Quiver (Ellsworth et al, 2004), Robo-Prof (Daly and Waldron, 2004), TorqueMOODa (Hill et al, 2005), gradem (Noonan, 2006), APOGEE (Fu et al, 2008). An overview of this topic may be found in (Douce et al, 2005a).…”