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Reducing the energy dissipation can improve the movement efficiency of a snake-like robot. Avoiding side slipping is the main way to reduce the energy dissipation. A creeping control method for the snake-like robot, named optimal passive creeping, is proposed. This method makes the robot avoid slipping by inputting the proper torque which is adjusted by its body shape. The purpose of the control method...
This paper presents an amphibious snake-like robot's design. This amphibious snake-like robot, mainly composed by 8 Modular Universal Units, is waterproof and can move smoothly in the water while pressurized with O-rings and other essential accessories. The control equations for each gait are introduced. Due to its special joint design and the feature of being densely covered by vanes, the robot is...
The control of a snake-like robot is a challenging problem because of the complex dynamics. In this paper, we present a novel method, called passive creeping, to control the serpentine locomotion of the snake-like robot. The kernel of this method is composed of the following two concepts: 1) dynamic shift brings the tendency toward the serpentine locomotion; and 2) energy links the environments and...
A snake-like robot can locomote in various environments; and it can manipulate objects when one end is fixed. A method of dynamic modeling for locomotion-manipulation of the snake-like robot is developed in order to unify the dynamic equations of two states. A virtual structure for orientation and position and the product-of-exponentials formula describe the mechanism and the kinematics of the robot...
This paper presents an amphibious snake-like robot's design and its omnipotent locomotion ability both on the land and in the water. This amphibious snake-like robot, mainly composed by 9 modular universal units, is waterproof and can move smoothly in the water while pressurized with O-rings and other essential accessories. In this paper, we concentrate on the gait diversity of the amphibious snake-like...
This paper presents our work on analysis of helical gait for snake-like robots. Although helical gait of snake-like robots was realized before, there is no any intensive investigation about the relationship between its performance and the control parameter settings. In this paper, we firstly introduce our SIA snake-like robot and its helical gait equations, then derive the snake-like robotpsilas body...
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