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A nature snake changes its gaits in different environment, so it is important for a snake-like robot to have more available gaits for a higher adaptability. In this paper, a novel snake-like robot is proposed to verify the motion fusion of rectilinear gait and serpentine gait. At first, the two gaits ant their fusions are analyzed and modeled. Then, the robot mechanism is designed to realize these...
This paper presents a novel method based on the velocity disturbance to control the locomotion of a snake-like robot. The inputs are joint torques which are derived from the dynamics equations. The traditional dynamics equations of a snake-like robot are complex, so a simplified dynamics equations are firstly derived based on the differential geometry theory. Then the velocity disturbance is introduced...
Vertical ground reaction force(vGRF) has been widely known as a qualitative features of human walking. While a human walks, the vGRF exhibits a double peak profile in which two maximal values appear from the heel contact to the toe off. So far, various studies have been mainly conducted in the field of biomechanics to elucidate the mechanism by which the double peak profile of the vGRF can be generated...
Two-wheeled balancing robots have been widely used for research and market purposes. This paper focuses on the control of such a robot to maximize its velocity when following certain paths. Dynamic model is constructed based on Lagrange equation; an efficient but low CPU-cost complementary filter is proposed to realize the accurate estimation of robot's posture; three independent PID controllers are...
Two wheeled inverted pendulum (TWIP) robot is widely used in various applications for its zero turning radius, small footprint and other advantages. However, the traditional TWIP robot can not keep upright when climbs or descends on a slope, which makes the operator sitting on the robot feel unsafe and uncomfortable. This paper introduces a Multi-DOF TWIP robot, which adding a movable weight to the...
A multi-DOF two-wheeled robot is considered, the research is aimed to develop the dynamic model and balance control scheme of the robot. A balance weight is involved to compose a new DOF, the dynamic model of the robot is established with Lagrange equations. To facilitate the modelling and design control scheme, the dynamic model is simplified and the displacement of balance weight is chosen as control...
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