Trot gait simulation of four legged robot based on a sprawled gait

Abstract

Lizards with a thin and flexible body can easily pass through a narrow path. Their sprawled gait increases their stability and allows them to overcome obstacles and rough terrain. Therefore, lizard bio-mimetic robots are suitable for reconnaissance and detection. The dynamic modeling of a lizard was carried out by weighing each link of a lizard and constructing its 3D shape using micro-CT scanning. We formulated a periodic sprawled gait which is able to describe the gait of lizards. In addition, we generated an upright gait by altering the gait parameters of the sprawled gait. The sprawled and upright gaits of the dynamic lizard model were simulated with various gait parameters using commercial dynamic analyzing software. The stable gait parameters for the stable trotting were obtained through the simulation.