Tip-over stability prediction for a holonomic omnidirectional transport mobile robot

This paper presents a study on tip-over prediction for a holonomic omnidirectional transport mobile robot with active dual-wheel caster (ADWC) assemblies. With concern to the dynamic supporting polygon and the existence of sudden dynamic changes during maneuver, the tip-over stability monitoring and its prevention becomes important. The candidate of tip-over axis and its direction is estimated by the combination of dynamical model and force-angle stability measure (FASM). In this paper, the effect of different loads and center of gravity is examined to analyze their relationship to the tip-over stability measurement. The performance of this prediction method is shown by the conducted simulations.