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Welding is an important material processing method and widely used in industry. With the development of technology and the realization of the welding process, the required weld quality is higher and higher; applying the robot to the welding process is a revolutionary development, which totally changes the typical mode of rigid atomization to the flexible mode. Welding robot are made up of robot, robot...
This paper proposes an innovative approach for the design of a nonlinear controller to stabilize an autonomous mobile robot. The design approach combines a nonlinear control design method with a root-finding algorithm for nonlinear algebraic equations. For the design, the robot model is divided into two parts: a state space model with intermediate control inputs and algebraic nonlinear equations relating...
Two behavioral modes of mobile robot: head for target behavior which is a point attractor and obstacle avoidance behavior which is a point repeller, are constructed based on the stability theory of nonlinear differential dynamical system. An intelligent robot behavioral dynamic navigation model is established based on dynamic approach, which is integrated both target navigation behavior and obstacle...
The eight leg-wheels hybrid stair climbing wheelchair robot, was developed for aged and disabled person helping them moving freely in structured three-dimensional environment. The efforts of motion automation have been partly implemented, such as climbing up/down the stairs, traversing slope and obstacles, nevertheless without carrying the person. The person is the passenger, also the control object,...
Point stabilization of a Tractor-Trailer Mobile Robot is addressed in this paper. Based on the transformed chained system, a discontinuous feedback control law with high order sliding mode method is proposed. Simulation is carried out to verify the control law and the results show that it can drive the system converge to the origin in finite time.
This paper introduces a novel distributed algorithm for deploying multi-robot systems, consisting of mobile robots with limited onboard sensing and wireless communication ranges, to approach the desired sensory coverage over targeted environments while maintaining communication connections. A virtual potential energy is defined for each mobile robot according to the difference between the actual and...
In this article, a gain scheduling strategy for the controller of a remote robot based on Internet and Bluetooth networks is designed and implemented. The Internet communication is based on the master-slave structure, UDP protocol. The slave comprises a PC and a mobile robot, interconnected through the protocol Bluetooth. The master is a second PC which realizes the remote control, the design of which...
In this paper, a framework is proposed for the distributed control and coordination of multiagent systems (MASs). In the proposed framework, the control of MASs is regarded as achieving decentralized control and coordination of agents. Each agent is modeled as a coordinated hybrid agent, which is composed of an intelligent coordination layer and a hybrid control layer. The intelligent coordination...
In this paper, we present a recursive method for the optimization of humanoid robot motions. The method is based on an efficient dynamics algorithm, which allows the calculation of the gradient function with respect to the control parameters analytically. The algorithm makes use of the theory of Lie groups and Lie algebra. The main objective of this method is to smooth the pre-calculated humanoid...
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