evolving models have found applications in many real world systems. in this paper, potentials of the evolving linear models (elms) in tracking control design for nonlinear variable structure systems are introduced. at first, an elm is introduced as a dynamic single input, single output (siso) linear model whose parameters as well as dynamic orders of input and output signals can change through ...

trajectories generally used to describe the space and time required to perform a desired motion task for a mobile robot or manipulator system. in this paper, we considered a cubic polynomial trajectory for the problem of moving a mobile robot from its initial position to a goal position in over a continuous set of time. along the path, the robot requires to observe a certain acceleration profil...

This paper introduces a systematic constraint-based approach to specify complex tasks of general sensorbased robot systems consisting of rigid links and joints. The approach integrates both instantaneous task specification and estimation of geometric uncertainty in a unified framework. Major components are the use of feature coordinates, defined with respect to object and feature frames, which ...

Multi-robot cooperation is a very important area in the field of robot. As we know, it is difficult to use a single robot to complete tasks independently. Often, people use multiple robots cooperation in order to compensate for the lack of individual ability. Multi-level robot can greatly improve the efficiency of the whole system. Compared to a single robot, a coordinated multi-robot system ha...

dimensional synthesis of a parallel robot may be the initial stage of its design process, which is usually carried out based on a required workspace. since optimization of the links lengths of the robot for the workspace is usually done, the workspace computation process must be run numerous times. hence, importance of the efficiency of the algorithm and the cpu time of the workspace computatio...

Just as special purpose computers and mainframes grew into the general purpose personal computers we use everyday, special purpose industrial robots are evolving into more general purpose personal robots. As robots become more capable and universal, their applications are less well-defined or even unknown at design time. We will have to design robots for classes of tasks rather than specific ap...

This article introduces the definition of Network Robot Systems (NRS) as is understood in Europe, USA and Japan. Moreover, it describes some of the NRS projects in Europe and Japan and presents a summary of the papers of this Special Issue.